Double Stars - R.A. 18h-24h

A detailed description of the project, the data sources, additional websites and how you can contribute visual observations and photographs of double stars to the project are summarized in our introduction.

Double Star Lists:

Complete List (Index)

Sketches (Index)
Photographs (Index)

Orbits (Index)

Double/Multiple Stars	1412
Visual Observations	2351
Sketches	188
Photographs	56
Observers	15
	Werner E. Celnik, Berthold Fuchs, Sarah Gebauer, Christopher Hay, Claus-Dieter Jahn, Karsten Kopp, Winfried Kräling, Stefan Loibl, Mark McCarthy, René Merting, Uwe Pilz, John Raymond, Jörg S. Schlimmer, Frederik Wanink, Robert Zebahl

m₁

m₂

Year

Coordinates (J2000.0)

★★

STF2308

40/41 Dra

5^m.7

6^m.0

18.7"

232°

2019

Dra

18^h00^m09.07^s / +80°00'13.70"

5^m.7

8^m.3

225.3"

129°

2017

Robert Zebahl Leipzig (Germany)	8x44	2020-06-27: The pair AB split, but very tight with components of equal brightness. In acute angle far apart the component C was also visible.
Christopher Hay Seeheim (Germany)	15x45	AB: Clearly split, brighter component seems bluish. One of the finest doubles for 15x, hence my two-star rating. In 10x42 a difficult split at the limit.
René Merting Drachhausen (Germany)	16x70	ein schön eng stehendes Pärchen, die Himmelsrichtungen erschließen sich mir hier leider nicht, aber die Komponenten sind beide ähnlich hell und weiß - schöner Anblick im Fernglas
Christopher Hay Seeheim (Germany)	50mm (8x)	AB: An elongated figure-8 very close to splitting
Christopher Hay Seeheim (Germany)	80mm (30x)	AB: Very clearly split, dominates the 2.5° FOV, with interesting sprinkling of fainter stars throughout the field.
Robert Zebahl Leipzig (Germany)	102mm (28x)	Very nice, slightly uneven pair. Components appeared yellowish-white. Beautiful surroundings. On the sketch the components A, B and C are visible.
Uwe Pilz Leipzig (Germany)	105mm (100x)	AB: =40/41 Dra. Auffallend
Christopher Hay Seeheim (Germany)	140mm (75x)	AB: Wide apart, the pair absolutely dominates the field of view, with attractive sprinkling of fainter stars to the west. Very delicate colour contrast that was hard to grasp in 3-inch scope now becomes clear, component B (40 Dra) is bluish, component A (41 Dra) yellowish.

A1374

8^m.9

10^m.9

0.5"

213°

2019

Her

18^h00^m17.93^s / +21°53'47.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very tough, the extraordinarily fine point of the B star appears with seeing. around 3 delta mag from light yellow A. Spectral class G0, yellow. Worth waiting for the seeing on this one. Physical with a 139.53-year period, it is slowly widening and will take another 30 years to reach apastron

STF2271

8^m.2

9^m.2

3.5"

267°

2019

Dra

18^h00^m18.74^s / +52°51'15.40"

8^m.2

13^m.0

160.8"

17°

2015

René Merting Drachhausen (Germany)	100mm (107x)	AB: bei 64x ist eine kleine 8 erkennbar - bei 107x sind beide Komponenten sicher trennbar - B ist eine dreiviertel Größenklasse schwächer
Mark McCarthy Fremont (California/USA)	203mm (205x)	AB: Dull white A and pale yellow B, ~1.5 delta mag, wide ~4"

A1375

9^m.6

10^m.6

1.8"

92°

2018

Her

18^h00^m24.40^s / +21°11'36.10"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Fine equal pair, well separated, points with seeing.

★

COU809

11^m.4

11^m.6

2.1"

26°

2016

Her

18^h00^m30.13^s / +17°33'52.70"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Excellent fine near equal pair, nicely separated, nice contrast with rich field of brighter stars. WDS uncertain of binarity, but Gaia shows there is no overlap in the parallax ranges. The proper motions are similar so these are comoving but not gravitationally bound

★

H6 2, 67 Oph

4^m.0

8^m.1

54.7"

143°

2019

Oph

18^h00^m38.72^s / +02°55'53.70"

René Merting Drachhausen (Germany)	10x35	zwischen beide Sterne passt maximal ein halbes Blatt Papier - C im Südosten kommt mir entgegen aller früheren Erfahrungen nicht so schwach vor wie sonst, ich würde hier nur auf maximal eine Größenklasse schätzen, eigenartig
René Merting Drachhausen (Germany)	10x50	ein einfacher Doppelstern - Komponente C steht mit gutem Abstand südöstlich von A - Komponente A ist gleißend weiß, C wirkt dagegen richtiggehend grau-braun
Christopher Hay Seeheim (Germany)	15x45	Stabilised binoculars, handheld. Components wide apart, almost too wide to appear as a double star. Secondary a fine speck of light beside the primary, which is >4mag brighter. According to Stelledoppie a true physical pair at a distance of 1230 light years. It is interesting to contemplate that at this distance in space the companion still looks so separate. “H“ in the catalogue name means that this double star is listed in the catalogue of W. Herschel. The 6 in the name means that it is a double star of the 6th Class [separation 1’ or larger] in Herschel’s system.
René Merting Drachhausen (Germany)	16x70	auf den ersten Blick bin ich enttäuscht, weil ich nur einen hell strahlenden Stern erkennen kann - dann aber mit etwas Konzentration ist südöstlich von der Leuchtgranate ein ganz schwacher Begleiter zu erkennen - ein sehr ungleiches Paar mit geschätzt 4 Größenklassen Unterschied - Komponente C wirkt rotbraun und steht ordentlich getrennt von A
Uwe Pilz Leipzig (Germany)	16x70	der helle ist gelb-weiß
Christopher Hay Seeheim (Germany)	25x80	Very far apart, almost so far as to appear to not belong together. However, in the 3° field of view 70 Ophiuchi, which is also a physical double, is seen to be also split. Thus a very attractive field overall. 67 Oph and 70 Oph are the left and right nostrils of the bull in the old constellation Taurus Poniatowski (Poniatowski’s Bull). 68 Oph (the tip of the bull’s nose) and 73 Oph (the bull’s right eye) are also double stars, but can’t be split at 25x. All four doubles – 67, 68, 70 and 73 Oph – are physical, a rare assemblage!
René Merting Drachhausen (Germany)	100mm (20x)	bei 20x großer Abstand zwischen beiden Sternen - weil Komponente A so gleißend hell strahlt, fehlt der mindestens um 3 Größenklassen schwächeren Komponente C im SO die Farbe, eher gräulich

LDS6413

7^m.1

13^m.1

88.1"

105°

2016

Her

18^h00^m38.89^s / +29°34'18.90"

Mark McCarthy

Fremont (California/USA)

317mm (277x)

A star is a pretty orange star A. B is 13th mag 88" -- not likely seen though there are several very faint stars about.

ES640

9^m.5

10^m.1

8.4"

77°

2018

Dra

18^h00^m42.85^s / +54°52'38.10"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

~1 delta mag, wide ~4"

STF2263

8^m.7

9^m.9

7.7"

158°

2018

Her

18^h00^m55.43^s / +26°32'57.20"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Wide ~1 delta mag, white-blue A and dull orange B

STF3129

7^m.6

10^m.6

30.8"

168°

2015

Her

18^h01^m07.16^s / +45°21'03.30"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

White and wide separation, 2 delta mag fainter orange B.

STF2264, 95 Her

4^m.8

5^m.2

6.4"

255°

2020

Her

18^h01^m30.41^s / +21°35'44.80"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x mein erster Eindruck ist, dass zwei annähernd gleichhelle sehr eng stehende Sterne mich wie zwei Augen anschauen, das unmittelbare Sternumfeld passt schön und verleiht dem Doppel eine hervorgehobene Stellung - Komponente B im Westen ist nur minimal schwächer als A - in guten Momenten ist die Trennung sehr eindeutig erkennbar
René Merting Drachhausen (Germany)	100mm (64x)	bei 64x zwei helle, knapp getrennte Sterne - die schwächere westliche Komponente zeigt ein schönes, helles Gelb und wirkt dadurch leicht schwächer - zurück auf 32x ist eine 8 mit deutlicher Einschnürung erkennbar - der Farbunterschied ist ebenfalls deutlich
Uwe Pilz Leipzig (Germany)	105mm (288x)
Karsten Kopp Köln (Germany)	140mm (94x)	Konnte erst mit 94-facher Vergrößerung gut getrennt wahrgenommen werden.
Sarah Gebauer Germany	150mm (54x)	zwei enge, hübsche Glanzpünktchen, die ich zuvor ziemlich lange in dem hellen Sterntrapez gesucht habe
Robert Zebahl Leipzig (Germany)	152mm (49x)	2020-06-23: At 49x eye catching double star, relatively tight with rather small difference in brightness. Beautiful color impression, which was even better visible at 69x: yellowish and yellowish-orange.
Mark McCarthy Fremont (California/USA)	508mm (667x)	95 Her. Orange and blue, wide, bright.
Karsten Kopp Köln (Germany)	600mm (135x)	Sehr einfaches und auffälliges Objekt. Kein Helligkeitsunterschied erkennbar.

Berthold Fuchs Wiesbaden (Germany)	130mm	close DS
Frederik Wanink Itterbeck (Germany)	254mm

STF2267

8^m.4

8^m.8

0.4"

281°

2018

Her

18^h01^m41.17^s / +40°10'41.90"

Frederik Wanink

Itterbeck (Germany)

254mm (640x)

nicht als DS gesehen

COU811

11^m.2

11^m.7

2.2"

153°

2016

Her

18^h01^m58.10^s / +30°47'16.70"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Faint but more cleanly split than at 20" due to seeing. 8" limited to 11th mag in poor transparency.

★

BU1127

7^m.3

9^m.2

0.7"

39°

2018

Her

18^h02^m30.89^s / +44°14'02.60"

Mark McCarthy Fremont (California/USA)	152mm (175x)	Notched elongation at all powers
Mark McCarthy Fremont (California/USA)	317mm (553x)	Very tough but a small point of a star resolved at the rim of the diffraction ring at both 553x & 885x, using kind of a partial averted vision.

STF2278

7^m.8

8^m.1

36.3"

29°

2019

Dra

18^h02^m52.88^s / +56°25'40.30"

7^m.8

8^m.5

33.6"

39°

2017

7^m.8

10^m.2

198.2"

189°

2015

8^m.1

8^m.5

6.0"

147°

2018

Christopher Hay Seeheim (Germany)	10x42	AB: Handheld binoculars with internal stabilisation. Well split. Spidery-fine, well matched pair.
René Merting Drachhausen (Germany)	18x70	A und BC sind getrennt zu erkennen, sehr dicht zusammen stehend, unauffällig - B und C kann ich nicht trennen
Mark McCarthy Fremont (California/USA)	203mm (205x)	AB: Pretty white-blue stars, in a 2+1 set. Not physical

STF2262, tau Oph

5^m.3

5^m.9

1.5"

290°

2019

Oph

18^h03^m04.91^s / -08°10'48.90"

Frederik Wanink

Itterbeck (Germany)

254mm (240x)

getrennt

../projects/double-stars/frederik-wanink/sketches/STF2262.jpg

STF2277

6^m.2

8^m.9

26.8"

129°

2018

Her

18^h03^m08.87^s / +48°27'51.30"

6^m.2

10^m.2

99.7"

297°

2015

8^m.9

10^m.2

126.4"

300°

2015

René Merting

Drachhausen (Germany)

100mm (20x)

AB: bei 32x ein weit getrenntes Pärchen mit schönem Farbkontrast - Komponente A weiß-gelb, B grau-orange - auch bei 20x ist noch ordentlich Luft zwischen beiden Sternen

STTA164

8^m.3

9^m.3

50.8"

0°

2015

Oph

18^h03^m12.41^s / +07°54'34.60"

René Merting

Drachhausen (Germany)

100mm (32x)

bei 32x sehr weit getrennt - schöner Farbkontrast, Komponente A strahlt weiß und B kupferrot und nicht viel schwächer als A, Helligkeitsunterschied nach meinem Empfinden eine halbe Größenklasse

ES470

9^m.4

10^m.7

8.3"

208°

2018

Her

18^h03^m15.08^s / +27°50'40.30"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Can hold B direct after foveal coaxing, it's very faint ~1 delta and wide

SLE88

12^m.2

13^m.3

3.8"

339°

2015

Her

18^h03^m51.56^s / +25°58'17.30"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

A star steady direct vision, B flashes into view with averted and slowly fades to invisibility. Close, about 4" and one and one half delta mag. [not physical, disappointingly]

HO426

7^m.0

12^m.0

11.7"

230°

2017

Her

18^h03^m54.11^s / +26°39'05.00"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Pretty yellow star, about 7th magnitude, with a much fainter 5 delta mag, very widely separated companion [not physical]

GCB30

12^m.0

12^m.5

1.3"

159°

2016

Her

18^h04^m01.86^s / +16°12'15.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

A little more than 1 delta mag, well separated white stars. No parallax range overlap

S698

7^m.2

8^m.5

29.7"

316°

2015

Sgr

18^h04^m12.64^s / -22°30'03.20"

René Merting

Drachhausen (Germany)

100mm (20x)

bei 32x die beiden hellsten Vertreter im Sternhaufen M 21, weit getrennt - Komponente B west-nordwestlich ist eine knapp Größenklasse schwächer und grau - der Doppelstern fällt nicht besonders auf in der Sternhaufenumgebung

TDT664

11^m.2

11^m.8

0.6"

232°

1991

Her

18^h04^m29.33^s / +22°54'44.20"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Marginal, I only get an elongation. Very tight

STF2279

9^m.9

10^m.3

13.6"

180°

2017

Dra

18^h04^m33.72^s / +50°52'48.00"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Near equal, wide, white. Physical

ES471

7^m.2

10^m.2

24.3"

44°

2015

Her

18^h04^m39.08^s / +27°06'54.90"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Much fainter B star, 3 delta mag, wide separation. Direct vision, but faint.

STT534

8^m.5

10^m.5

2.3"

269°

2016

Her

18^h04^m59.56^s / +21°26'31.90"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

One star definitely brighter by at least one mag than the other. Well separated

A2093

9^m.1

9^m.8

0.6"

227°

2018

Her

18^h05^m25.74^s / +16°23'42.30"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

White stars, nicely split, >1 delta mag. No parallax range overlap

70 Oph, P Oph, STF2272

4^m.2

6^m.2

6.6"

122°

2019

Oph

18^h05^m27.37^s / +02°29'59.30"

Uwe Pilz Leipzig (Germany)	16x70	nicht einfach; der helle ist gelb
Christopher Hay Seeheim (Germany)	25x80	Clean split, component A appears yellowish. 70 Oph is the left nostril of the bull in the old constellation Taurus Poniatowski (Poniatowski’s Bull). On the connections to 67, 68 and 73 Oph see the entry on 67 Oph.
René Merting Drachhausen (Germany)	100mm (64x)	bei 32x wirkt der Stern nicht rund, sondern ein wenig nach SO verschmiert - bei 64x dann eindeutig ein knapp getrenntes schön anzusehendes Pärchen - Komponente A hell-gelb, B orange-gelb
Jörg S. Schlimmer Germany	127mm (136x)	easy to split
Sarah Gebauer Germany	150mm (85x)	ein ganz leicht goldener Farbeindruck des Sternpaares, die Sterne stehen recht dicht beisammen und sind dennoch schön getrennt
Robert Zebahl Leipzig (Germany)	200mm (80x)	Conditions in the target region: SQM-L 20.1 Well split at 80x. Brighter component appeared white, fainter one slightly orange.

Berthold Fuchs

Wiesbaden (Germany)

130mm

difficult DS

../projects/double-stars/berthold-fuchs/photographs/70%20Ophiuchi.png

STF2276

7^m.1

7^m.4

7.1"

257°

2017

Oph

18^h05^m43.30^s / +12°00'13.90"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Beautiful near equal well separated, yellowish, in nice field of stars.

STT341

7^m.4

8^m.8

0.1"

86°

2019

Her

18^h05^m49.72^s / +21°26'45.60"

AB-C

7^m.2

10^m.6

28.2"

171°

2015

AB-D

7^m.2

10^m.5

39.5"

99°

2009

AB-E

7^m.2

10^m.2

66.5"

38°

2018

AB-F

7^m.2

11^m.5

111.6"

357°

2009

AB-G

7^m.2

7^m.6

132.5"

239°

2018

René Merting

Drachhausen (Germany)

100mm (32x)

AB-C: bei 32x ist Komponente C weit getrennt südlich von AB als Hauch von einem Stern erkennbar
AB-D: bei 32x ist Komponente D im Osten von AB ist ähnlich schwach erkennbar wie C im Süden - D ist etwas weiter weg als C
AB-E: bei 32x ist Komponente E im NO von AB ähnlich schwach erkennbar wie C im Süden und D im Osten - Entfernung zu A doppelt so weit wie AB-C
AB-F: bei 64x ist F im Norden von AB in vierfacher Entfernung AB-C erkennbar - im Grunde spiralen die vier schwachen Komponenten von Süden kommend von Osten nach Norden aus

STF2282

7^m.9

9^m.4

2.7"

83°

2017

Her

18^h06^m30.47^s / +40°21'39.60"

7^m.9

9^m.4

2.7"

80°

2008

9^m.4

0.2"

48°

2008

René Merting Drachhausen (Germany)	100mm (107x)	AB: bei 64x ploppen zwei kleine Perlchen auf, die dicht beieinander stehen - Komponente B im Osten ist nur unwesentlich schwächer (eigenartig, laut Stelle Doppie sollen beide Sterne 1.5 Größenklassen Helligkeitsunterschied haben) - bei 107x ist die Trennung dann eindeutig, aber immer noch sehr knapp
Mark McCarthy Fremont (California/USA)	152mm (175x)	AB: White stars, 1 delta mag, good separation
Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: Faint yellow white, 3", half delta mag.

COU417

11^m.3

11^m.4

1.5"

91°

2016

Her

18^h06^m47.23^s / +23°25'52.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very finely split pair at this magnification and small scale, slight mag difference, small faint pair vs other brighter stars in the field. WDS uncertain, but Gaia data show 25% parallax range overlap and only 543 AU separation, so it's likely this is gravitationally bound

★

AC15, 99 Her

5^m.1

9^m.0

1.4"

331°

2018

Her

18^h07^m01.61^s / +30°33'42.70"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

99 Her.Very nice. B star resolves just outside first diffraction ring when that ring has faded with good seeing, a very fine faint point. large delta mag. There are many other pairings in this system, including 0.2" for the A star]

STT524

7^m.9

8^m.9

0.5"

207°

2018

Her

18^h07^m29.52^s / +19°39'59.10"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Suspected hairline with 333x, nice clean split at 533x, white stars, significant magnitude difference, ~0.5". 686 year period

★

STF2280, 100 Her

5^m.8

14.3"

183°

2019

Her

18^h07^m49.56^s / +26°06'04.40"

René Merting Drachhausen (Germany)	10x35	ein 8, eine Einschnürung ist ab und an erkennbar - Trennung nicht möglich
René Merting Drachhausen (Germany)	10x50	zwei extrem dicht stehende helle Sterne - noch nicht getrennt, aber schön als 8 erkennbar
Robert Zebahl Leipzig (Germany)	16x70	2020-07-05: Very nice, rather isolated double star. Striking. Similar bright component, both white.
René Merting Drachhausen (Germany)	18x70	perfekt für 18-fache Vergrößerung - zwei gleich helle, dicht zusammen stehende Sterne - reinweiß und sehr auffällig, weil keine ähnlich hellen Sterne im Umfeld zu sehen sind
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x ein schönes, enges Pärchen zweier gleichheller Sterne - beide gleich hell und reinweiß - zurück auf 20x zeigen sich beide Protagonisten weiterhin ganz knapp getrennt - Komponente B im Süden wirkt leicht gelblich und schwächer
Uwe Pilz Leipzig (Germany)	105mm (26x)	Weiß-orangeweiß
Robert Zebahl Leipzig (Germany)	120mm (40x)	Conditions in the target region: SQM-L 20.5 Very nice, evident double star with equally bright components.
Karsten Kopp Köln (Germany)	140mm (94x)	Doppelstern ist einfach zu trennen. Das besondere ist hier, dass die beiden Sterne recht alleine zu stehen scheinen. Beide erscheinen weiß.
Sarah Gebauer Germany	150mm (54x)	zwei hübsche Glanzpünktchen, die mich an ein Knöpflein mit zwei Löchern erinnern, der "typische" DS für mich: nicht zu eng, nicht zu weit, gleich hell, sehr nett
Robert Zebahl Leipzig (Germany)	152mm (22x)	Beautiful view. Easy to separate with components of the same brightness. It is noticeable that there are no brighter stars in the immediate vicinity, so that the double star stands out very well.
Mark McCarthy Fremont (California/USA)	203mm (205x)	100 Her. Bright equal wide yellow-white stars. [not physical]

Berthold Fuchs

Wiesbaden (Germany)

130mm

easy DS

../projects/double-stars/berthold-fuchs/photographs/100%20Herculis.png

COU504

11^m.2

11^m.7

2.1"

76°

2016

Her

18^h08^m51.57^s / +24°32'48.80"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very near equal pair, well split, a fine close pair in a bright star field. Good parallax range overlap, only 713 AU separation, so very likely gravitationally bound

COU812

10^m.8

0.7"

265°

2016

Her

18^h09^m09.93^s / +31°29'10.50"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Elongation, marginal notch, but a bit too hazy to make a good observation

HU926

9^m.9

3.9"

265°

2016

Dra

18^h09^m31.81^s / +64°14'02.90"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Nice equal mag, wide ~4", white. Not physical

STF2281, 73 Oph

6^m.0

7^m.5

0.8"

283°

2019

Oph

18^h09^m33.86^s / +03°59'35.80"

Frederik Wanink

Itterbeck (Germany)

254mm (640x)

als 8 zu sehen, schwierig

../projects/double-stars/frederik-wanink/sketches/73Oph.jpg

★★

HU674

7^m.7

8^m.6

0.7"

214°

2018

Her

18^h09^m40.64^s / +50°24'07.40"

Frederik Wanink Itterbeck (Germany)	254mm (640x)	getrennt, ähnlich hell
Mark McCarthy Fremont (California/USA)	508mm (333x)	Split with seeing at 333x, near equal white.

STF2289

6^m.7

7^m.2

1.2"

218°

2019

Her

18^h10^m08.69^s / +16°28'35.00"

Mark McCarthy Fremont (California/USA)	203mm (333x)	Just split in 20" at 205x, but flaring. 333x had messy diffraction. 8" mask at 333x gave clean disks, split, ~0.7". Dull yellow and yellow-red colors.
Frederik Wanink Itterbeck (Germany)	254mm (640x)	Hauptstern gelb, Begleiter scheint bläulich

HU316

10^m.0

11^m.0

1.8"

157°

2016

Her

18^h10^m19.94^s / +18°16'33.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Nice 1 delta, well split, white and dull white stars. WDS is uncertain but the Gaia data show good parallax range overlap, a very close 336 AU separation, BUT the escape velocity exceeds the radial velocity delta, so it is not (or will not be for long) gravitationally bound

HO81

8^m.2

11^m.1

3.3"

215°

2019

Her

18^h10^m26.23^s / +32°21'10.10"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

With the 8" mask, the B star appears with averted vision as a bluish smear at the right PA and ~3" separation. In the 20" the A star is more diffracted and a brighter yellow, and B is a direct obvious blue small glow resolving to point with seeing.

S700 & ABH94

S700

8^m.3

9^m.7

18.8"

291°

2018

Ser

18^h10^m33.56^s / -16°44'57.40"

S700

8^m.3

8^m.6

28.6"

353°

2018

ABH94

8^m.3

14^m.2

47.7"

348°

2015

ABH94

8^m.3

13^m.5

58.0"

65°

2015

ABH94

8^m.3

13^m.1

99.2"

49°

2015

S700

8^m.3

11^m.3

35.6"

297°

2015

René Merting Drachhausen (Germany)	18x70	AC: Komponente C ist nördlich von A eng stehend, aber gut getrennt zu sehen - beide Komponenten sind fast gleich hell - irgend etwas im Westen von A stört die Harmonie (Komponente B?), aber ich kann es nicht mit Gewissheit sagen
René Merting Drachhausen (Germany)	100mm (32x)	AB: wenn man bei 32x genau hinschaut, ploppt westlich von A in halbem Abstand AC ein schwacher Lichtpunkt aus, das ist Komponente B … ohne Farbe, weil sehr schwach - auch 64x verbessert die Sichtbarkeit von B nicht wirklich AC: bei 32x fallen die fast gleich hellen Komponenten A und C (nördlich von A) des Dreifachsystems auf
René Merting Drachhausen (Germany)	320mm (45x)	AB: Komponente B ist sehr schwach und nur halb so weit entfernt wie der Abstand AC AC: A und C nehmen sich helligkeitstechnisch nicht viel - zusammen mit B entsteht ein flaches Dreieck

ES185

9^m.9

11^m.0

12.1"

285°

2017

Her

18^h11^m04.08^s / +32°58'22.40"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Obvious pair, wide, bluish stars, half delta mag [not physical]

HU317

9^m.6

9^m.7

1.5"

205°

2016

Her

18^h11^m20.44^s / +17°13'17.80"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Light orange stars, well separated, near equal.

★

A238

8^m.6

9^m.6

0.6"

72°

2016

Her

18^h11^m20.99^s / +25°19'18.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Extraordinary pair. With critical focus it pops into view with clear airy disks, nicely split light yellow orange A and blue B. Seeing is steady for around 7 seconds before fuzzing out for longer stretches. WDS uncertain, and Gaia lacks data for the secondary.

STF2292

8^m.3

8^m.6

0.8"

276°

2016

Her

18^h12^m06.74^s / +27°38'35.90"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Very fine split, white stars, slight mag difference ~0.5 delta. Very fine at this magnification

COU1006

9^m.2

11^m.3

0.5"

337°

2016

Her

18^h12^m58.00^s / +33°17'53.90"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

B is very much fainter and can only be seen when A is perfectly still and round, with seeing. Fairly well separated about 0.5", can tell PA with drift. Physical with 119.2-year period, it is coming off periastron and slowly widening

BU131 & FOX221

BU131

7^m.5

9^m.3

3.2"

277°

2016

Ser

18^h13^m35.49^s / -15°35'54.10"

BU131

7^m.5

11^m.8

9.2"

300°

2015

FOX221

7^m.5

12^m.5

40.8"

34°

2015

BU131

9^m.3

11^m.8

6.2"

310°

2005

René Merting

Drachhausen (Germany)

320mm (144x)

BU131 (AB): bei 144x ist Komponente B knapp getrennt westlich von A zu erkennen und bestimmt 1,5 bis 2 Größenklassen schwächer - B wirkt grau gegen den weißen A

mu Sgr, Polis

H5 7

3^m.9

10^m.5

16.9"

258°

2013

Sgr

18^h13^m45.81^s / -21°03'31.80"

BU292

3^m.9

12^m.8

25.5"

119°

2008

HJ2822

3^m.9

10^m.0

48.2"

312°

2013

HJ2822

3^m.9

9^m.2

50.2"

114°

2013

SLV7

10^m.5

10^m.0

40.8"

331°

2020

SLV7

10^m.5

9^m.2

64.4"

106°

2020

René Merting Drachhausen (Germany)	100mm (32x)	AD: bei 32x Komponente A gleißend hell im Zentrum und Komponente D gut abgesetzt sehr schwach im NW AE: bei 32x auf der entgegengesetzten Seite im SW zeigt sich Komponente E in gleichem Abstand und mit gleicher Lichtschwäche - die beiden schwachen Komponenten D und E haben A voll in der Flügelzange - das Ganze funktioniert auch bei 20x, aber das sind die beiden schwachen Komponenten nahe der Sichtbarkeitsgrenze
René Merting Drachhausen (Germany)	320mm (45x)	AD: bei 45x ist D wunderbar als schwacher Begleiter in ordentlichem Abstand nordwestlich von A erkennbar AE: E zeigt sich auf der entgegengesetzten Seite in gleichem Abstand - mit AD zusammen ein schickes Trio

★

BU1274

9^m.8

10^m.6

1.0"

144°

2017

Dra

18^h14^m31.41^s / +56°34'26.90"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Super challenging. A-BC is bright white A and BC is blue widely separated. Near to BC is BD, which is near equal to BC and ~6". BC is faint and split with seeing, hairline, significant mag difference

GII110

9^m.4

11^m.9

0.8"

302°

2016

Her

18^h14^m37.03^s / +23°35'01.60"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

With seeing, very significant delta mag ~2 delta mag, white stars, very tight but split. Suspected @ 333x. [Discoverer is amateur Rene Gili, who observes with the large refractors at the Nice Observatory, this pair was discovered in 2016 via CCD-- the discovery measure is the only one in WDS so far]

POU3366

11^m.0

13.7"

238°

2016

Her

18^h14^m49.24^s / +23°13'54.60"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Easy near equal wide pair

HU927

10^m.2

0.4"

101°

2016

Her

18^h15^m04.79^s / +32°49'26.80"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

White stars, slight mag difference, hairline with 533x, nice good split with 667x. WDS uncertain, and Gaia lacks data for the primary

STT346

8^m.3

9^m.0

5.3"

329°

2020

Her

18^h15^m25.05^s / +19°46'13.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Nice pale yellow-white stars, >1 delta mag, >4" separation

★

ES1651, TZ Lyr

11^m.2

12^m.4

2.5"

5°

2021

Lyr

18^h15^m49.67^s / +41°06'37.80"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Challenging! Faint elongated star with direct vision. With averted vision it flashes a split, half delta mag, just split.

STF2305

9^m.2

10^m.8

5.1"

334°

2018

Dra

18^h16^m13.17^s / +51°19'46.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Blue-white A and >1 delta mag ruddy B, wide

STTA167

8^m.0

9^m.1

53.0"

74°

2016

Oph

18^h16^m13.87^s / +04°34'02.90"

René Merting Drachhausen (Germany)	10x50	ordentlich getrennt und mangels Konkurrenz im Umfeld leicht auffindbar - Komponente A ist schwach, B ist nochmal eine Größenklasse schwächer, aber noch problemlos erkennbar
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x leicht zu trennen - Komponente B im NW ich gut eine Magnitude schwächer, deutlich dumpfer und gräulicher, Komponente A dagegen strahlt weiß

STF2304

8^m.8

9^m.8

5.1"

69°

2020

Lyr

18^h17^m06.98^s / +40°15'21.20"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Faint pair, so the colors might be a little exaggerated. Ice blue A and reddish B, wide. Spectral is K0, yellow-orange. WDS says it's physical, and it looks that way: only 5% parallax overlap, but a 1,790 AU separation, and the A star stellar mass is 2.6 and B is 1.9. The difference in radial velocity is less than the escape velocity, so it may well be gravitationally bound

A241

10^m.6

10^m.7

0.7"

288°

2016

Her

18^h17^m10.10^s / +26°40'33.30"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Very fine pair, significant delta mag, well split but close with 533x. WDS uncertain, however there is no overlap in parallax ranges

SHJ264

AB-C

6^m.9

7^m.6

17.2"

51°

2019

Sgr

18^h18^m43.26^s / -18°37'10.80"

René Merting Drachhausen (Germany)	76mm (29x)	bei 29x ein schön getrennter Doppelstern mit leichtem Farbkontrast - B im Nordosten ist eine halbe bis dreiviertel Größenklasse schwächer
René Merting Drachhausen (Germany)	100mm (20x)	bei 32x ein ordentlich getrenntes Pärchen, auffällig im Umfeld - Komponente AB im SW ist weiß-blau, Komponente C ist 0.75 mag schwächer und weiß-gelblich - 20x reichen ebenso, dann eng getrennt
René Merting Drachhausen (Germany)	320mm (45x)	bei 45x ein schön anzusehendes Sternpaar - gut getrennt und doch eng zusammen stehend - B im NO ist gut eine halbe Magnitude schwächer

AG221

9^m.9

1.8"

12°

2016

Her

18^h20^m02.24^s / +21°20'00.70"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Fine near equal, split ~2"

STF2309

9^m.3

9^m.9

3.4"

352°

2018

Her

18^h20^m06.84^s / +25°31'53.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Wide ~4", white stars, ~1 delta mag. Not physical

STF2310

6^m.8

10^m.0

5.1"

235°

2017

Her

18^h20^m38.67^s / +22°47'50.70"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Bright white A and faint dull wide B, ~3 delta mag, wide ~6"

STT353, phi Dra

4^m.5

5^m.9

0.5"

266°

2011

Dra

18^h20^m45.44^s / +71°20'15.80"

Frederik Wanink

Itterbeck (Germany)

254mm (640x)

nicht als DS gesehen

Frederik Wanink

Itterbeck (Germany)

254mm

../projects/double-stars/frederik-wanink/photographs/STT%20353%20AB.jpg

BU640

7^m.0

12^m.0

0.7"

322°

2008

Her

18^h20^m49.23^s / +27°31'48.30"

Mark McCarthy

Fremont (California/USA)

178mm (533x)

Very much fainter B seen with averted vision and foveal coaxing only, can only hold it briefly. Physical with a 951.7127-year period (to be exact), it is now making a very fast turn around apastron -- though I think the orbital solution is predicting an incorrect position (too close to apastron at this moment) -- unfortunately I did not record the PA so I can't tell if it's on the west or east side of apastron. Will need to re-observe this, since I don't think I'd see 0.2" at 533x (likely around >0.5" given the delta mag)

ES2110

9^m.3

10^m.8

6.5"

96°

2020

Lyr

18^h20^m58.41^s / +36°30'18.90"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

B is seen with averted vision only, white. WDS uncertain; there is no parallax overlap so it is not

STF2312

9^m.3

9^m.9

1.7"

341°

2016

Her

18^h21^m09.08^s / +28°20'03.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very fine white stars, >1 delta mag, ~1.5"

COU505

11^m.0

11^m.3

1.1"

318°

2015

Her

18^h21^m16.17^s / +24°09'06.10"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Very faint pair, ~1 delta mag, split firmly with seeing, ~1" separation

HO430

9^m.6

10^m.7

2.5"

194°

2018

Her

18^h21^m37.31^s / +20°30'11.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Blue-white A and dull white B, ~2 delta, wide ~2". Nice looking pair [not physical]

★★★

BU641

7^m.0

8^m.7

0.8"

341°

2015

Her

18^h21^m48.44^s / +21°30'27.90"

Frederik Wanink Itterbeck (Germany)	254mm (640x)	sehr schwierig
Mark McCarthy Fremont (California/USA)	317mm (553x)	Extraordinary! Moderately bright A and very much fainter B, 4-5 delta mag, <1" separation. Seeing needs to still.
Mark McCarthy Fremont (California/USA)	508mm (533x)	V989 Her. Seen as a snowman dot to bright white A @ 333x, split with 533x, inside first diffraction ring. Need A's disk to be perfectly tight for B to resolve with seeing. Very nice. 1" at discovery 1878 with Dearborn 18.5-inch

★

HU581

8^m.8

9^m.4

0.4"

122°

2016

Her

18^h22^m54.84^s / +14°58'11.00"

Mark McCarthy

Fremont (California/USA)

508mm (1067x)

Snowman at 533x & 667x, clean split at 1067x & apodising mask, one delta mag. Amazing. Coalesces into two points, can easily tell orientation & magnitude difference for sketch. At apastron, it is on a nearly edge on orientation, will close rapidly within the next ten years to be too close for me to detect.

HO83

10^m.1

10^m.4

0.8"

115°

2016

Her

18^h23^m20.34^s / +27°31'24.10"

Mark McCarthy

Fremont (California/USA)

178mm (445x)

Pretty difficult, B appears with averted vision only and fades with direct. Much fainter, about 1". Physical with a 1699.9512-year period, it will soon make a turn toward periastron and tighten over the next few decades. Discovered in 1883 at 0.3"

STF2314

9^m.0

10^m.3

2.7"

331°

2018

Her

18^h23^m25.75^s / +23°27'19.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Fine pair, wide ~2.5", ~1 delta mag

ES187

9^m.3

9^m.4

2.5"

207°

2018

Dra

18^h23^m45.03^s / +51°38'55.80"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Near equal, ~2", slightly ruddy stars. Nice pair

★

STF2323, 39 Dra

5^m.1

8^m.1

3.6"

348°

2020

Dra

18^h23^m54.65^s / +58°48'02.10"

5^m.1

8^m.0

88.9"

20°

2020

Robert Zebahl Leipzig (Germany)	55mm (27x)	AC: Pretty wide, unequal pair. Die brighter A component appeared white.
Robert Zebahl Leipzig (Germany)	55mm (71x)	AB: Very nice. The B component seemed to be comparable faint as the C component.
Mark McCarthy Fremont (California/USA)	203mm (205x)	AB: 39 Dra. Brilliant white A and slightly ruddy B, ~3 delta mag, ~4" sep. 3962.5 year period.

A244

10^m.5

0.6"

268°

2016

Her

18^h24^m09.99^s / +28°18'21.40"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Extremely fine, half delta mag white stars, good clean spilt. WDS says they are near equal but Gaia has 9.92/10.77. No Gaia data on the secondary

★

STF2315

6^m.6

7^m.8

0.6"

117°

2018

Her

18^h24^m58.46^s / +27°23'41.30"

Frederik Wanink Itterbeck (Germany)	254mm (640x)	als 8 zu sehen
Mark McCarthy Fremont (California/USA)	317mm (277x)	! Hairline split @ 553x near equal mag. Suspected elongation at 277x.:
Mark McCarthy Fremont (California/USA)	508mm (533x)	Barely split with seeing, resolves to two disks, more than hairline but almost 2 delta mag, very tough, need perfect seeing. 2094 year period

AG361

10^m.7

11^m.0

3.8"

13°

2015

Her

18^h25^m07.89^s / +26°54'09.60"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Near equal white stars, wide ~4", in a busy field [not physical]

BU134

8^m.0

9^m.7

1.1"

125°

2016

Lyr

18^h25^m17.50^s / +46°53'07.40"

Sarah Gebauer Germany	100mm (134x)	zusammen mit STT352 in einem Bild, doch wegen Amiciprisma nicht zu trennen
Mark McCarthy Fremont (California/USA)	178mm (205x)	I get hints of a faint brightening in A's diffraction, but no resolution. Seeing won't bear higher powers. WDS uncertain, and there is no parallax overlap, so surprisingly this is not physical. Burnham "discovered" in 1851 with his 6-inch at 1.1", but notes: "it had been seen before at Poulkowa, and is STT 543."

STT351 & HU66

HU66

7^m.9

8^m.4

0.2"

197°

2016

Dra

18^h25^m18.20^s / +48°45'42.50"

STT351

7^m.9

8^m.2

0.8"

26°

2019

HU66

8^m.4

8^m.2

0.8"

26°

2019

Mark McCarthy Fremont (California/USA)	203mm (305x)	STT351 (AC): Split, better with seeing, light orange stars, significant mag difference. Did not notice HU 66 AB, 7.9/8.4 0.1" or HU 66 BC, 8.40/8.25 0.9 -- need to go back to this one!
Frederik Wanink Itterbeck (Germany)	254mm (640x)	HU66 (BC): getrennt
Mark McCarthy Fremont (California/USA)	317mm (553x)	HU66 (BC): Very fine near equal pair, yellowish A and blue-white B. ~1" or less.
Mark McCarthy Fremont (California/USA)	508mm (333x)	STT351 (AC): Orange stars, noticeable magnitude difference ~0.5, separated just less than ~1". What's curious is the AB pair is HU 66 AB listed as 7.90/8.40 0.1" currently, with HU 66 BC as 8.40/8.25 0.9". So my question is, if AC is physical, and if BC are physical too, why is AC uncertain? It would seem they should all be sharing orbits? Perhaps it just cries out for additional measures -- AB is grade 4 and BC is grade 5, so they are confident of physicality but there's not enough data to nail it down.

STF2317

12^m.5

12^m.7

1.4"

323°

2009

Her

18^h25^m19.45^s / +26°04'45.90"

Mark McCarthy Fremont (California/USA)	508mm (533x)	Very challenging. AB is obvious, A a bright light orange, B is blue and faint -- with careful examination I do get a scintillating small balls separated ~1" and near equal -- averted vision brightens these to pinpoints but I can't hold that resolution direct. Stelle Doppie says first measure of this pair is in 1901, so it's not a Struve discovery, likely Aitken or Hussey with the Lick 36-inch
Mark McCarthy Fremont (California/USA)	508mm (533x)	BC much cleaner on this night of better seeing, blue stars very close and faint

HO85

8^m.7

12^m.0

4.9"

196°

2016

Her

18^h25^m20.37^s / +28°04'59.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Blue-white A and slightly red B, wide, ~3 delta. Did not notice HDS 2604 Aa-Ab, 0.7", 11.3 mag (though I probably could not have resolved it anyway).

COU815

9^m.0

11^m.3

1.6"

144°

2015

Her

18^h25^m44.22^s / +26°39'25.00"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

B is a faint light orange star but is clearly separated from white A. Tough little pair

★

STT352

7^m.9

9^m.4

24.2"

221°

2019

Lyr

18^h26^m24.42^s / +46°48'32.20"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x ist B schön abgesetzt südwestlich von A erkennbar - Helligkeitsunterschied 1.5 mag - bei 64x zeigt sich A reinweiß, B ist grau
Sarah Gebauer Germany	100mm (50x)	zusammen mit BU134 im Bild; ein sehr schwaches Paar, schmal, die schwächere Komponente muss ich beinahe konzentriert suchen
Mark McCarthy Fremont (California/USA)	152mm (175x)	Wide one delta mag

HO634

8^m.2

12^m.2

3.3"

269°

2016

Her

18^h26^m34.71^s / +24°22'12.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Nice light yellow-orange star with very faint B, just direct vision & wide, but obviously tied to A [not physical!]

★

BU1326

6^m.5

12^m.1

5.5"

107°

2015

Her

18^h26^m40.93^s / +26°26'57.20"

6^m.5

9^m.6

61.8"

60°

2015

Mark McCarthy Fremont (California/USA)	152mm (175x)	AB: Very extremely fine B is split with seeing and with averted vision only, blue to A's white. Very, very fine!
Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: B star is extremely faint 5"
Mark McCarthy Fremont (California/USA)	317mm (553x)	AC: C star is extremely faint and much further out, ~50"
Mark McCarthy Fremont (California/USA)	508mm (333x)	AB: Extremely faint star ~4" distant from the A, 5 delta mag.

SLE177

10^m.7

12^m.3

9.9"

186°

2015

Her

18^h27^m07.43^s / +23°05'42.10"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

2 delta mag wide pair, slightly blue B.

STF2316, 59 Ser

5^m.4

7^m.6

3.9"

322°

2018

Ser

18^h27^m12.51^s / +00°11'46.10"

René Merting Drachhausen (Germany)	100mm (64x)	bei 64x knappe Trennung - Komponente B zeigt sich wie ein kleines schwaches Anhängsel von A - mehr als 2 Größenklassen Helligkeitsunterschied
Mark McCarthy Fremont (California/USA)	508mm (205x)	Close but easily split, ~2", 2 delta mag, both yellow white.

★

TDT886

11^m.0

11^m.3

0.5"

24°

1991

Her

18^h27^m27.80^s / +24°17'10.40"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Extremely fine. At first it seems not split, but in best moments B stretches out and pops out from B, 0.5" and 1 delta mag.

AG223

10^m.3

11^m.1

2.6"

51°

2018

Her

18^h27^m34.56^s / +24°22'40.00"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Nice white near equal, white, well split ~2.5" [not physical]

STF2319

8^m.4

8^m.2

5.3"

190°

2019

Her

18^h27^m43.94^s / +19°17'43.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Yellow-white near equal wide stars, in a plus one which is ~1 delta fainter wide perpendicular PA (this is the AC pair)

★

STF2320

7^m.1

8^m.9

0.9"

1°

2015

Her

18^h27^m45.89^s / +24°41'50.80"

Mark McCarthy Fremont (California/USA)	203mm (667x)	V994 Her. Seen with the 20", but used the 8" mask to clean up the images. Two delta mag, ~1" very nice pair. [eclipsing binary of Algol type--surely not seeing the eclipsing star? In fact, both A & B each are eclipsing binaries, the first such system to be discovered in the whole sky!]
Frederik Wanink Itterbeck (Germany)	254mm (640x)
Mark McCarthy Fremont (California/USA)	317mm (553x)	Nice! Blue-white stars, 1", 2 delta mag.

POU3411

10^m.6

12^m.4

9.9"

34°

2015

Her

18^h27^m47.84^s / +24°14'48.90"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Chain of three stars like an eyebrow, about 1 delta mag between them. AB & AC seen, with A in the middle. I noticed this asterism while observing TDT 886, it was in the same field. [not physical]

POU3410

11^m.6

12^m.0

8.2"

259°

2015

Her

18^h27^m49.26^s / +23°56'22.20"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Seems more near equal than SkyTools data. Wide. [not physical]

SLE180

13^m.1

13^m.5

6.4"

247°

2015

Her

18^h28^m06.90^s / +23°59'22.20"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

More of an equal pair, 13th mag, than the two delta in SkyTools.

TDT896

10^m.6

11^m.4

8.8"

152°

2015

Dra

18^h28^m16.85^s / +49°30'16.00"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Faint but easy pair, wide, <1 delta mag. Not physical.

STTA168

7^m.7

8^m.8

47.2"

162°

2016

Ser

18^h28^m33.52^s / +04°50'55.20"

7^m.7

9^m.3

244.2"

217°

2016

René Merting Drachhausen (Germany)	10x50	AB: ordentlich getrenntes Sternpaar - Komponente B im Süden ist schon relativ schwach, aber ohne Mühe erkennbar - das Sternpaar steht schön isoliert, da keine vergleichbar hellen Sterne im unmittelbaren Umfeld sichtbar sind
René Merting Drachhausen (Germany)	18x70	AB: ein sehr entspannter Doppelstern - kein auffallendes Sternpaar - Komponente B steht komfortabel getrennt im Südosten von A und ist 1 bis 1.5 Magnituden schwächer - leichter Farbkontrast
René Merting Drachhausen (Germany)	76mm (29x)	AB: bei 29x ein weit auseinander stehendes Paar - B im Süden ist halb so hell und wirkt blaugrau, A mit strahlend weißer Weste

HU320

10^m.4

10^m.8

2.0"

144°

2016

Her

18^h28^m39.80^s / +16°13'42.50"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Very faint close pair, can just hold direct. WDS uncertain, however the stars do not share the same parallax range

HN 125

8^m.2

8^m.5

2.7"

108°

2016

Sgr

18^h28^m56.75^s / -25°02'34.50"

René Merting Drachhausen (Germany)	100mm (107x)	bei 107x ist das Sternpaar nur in guten Momenten knapp getrennt zu sehen - Komponente B im Osten ist nur knapp schwächer
René Merting Drachhausen (Germany)	320mm (144x)	bei 144x kann ich den DS trennen - knapp, aber ok - beide Sterne sind gleichen sich wie ein Ei dem anderen, d.h. gleich hell und die gleiche Farbe

WNO6

6^m.7

8^m.0

41.8"

182°

2018

Sgr

18^h28^m57.36^s / -26°34'55.50"

René Merting Drachhausen (Germany)	18x70	ein komfortabel getrenntes Sternpaar - Komponente B im Süden ist eine dreiviertel Größenkasse schwächer - insgesamt ein schönes Sternumfeld mit den beiden ebenso hellen Sternen südwestlich
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x sehe ich ein weit auseinander stehendes Pärchen - Komponente A im Norden weiß, Komponente B ist eine Größenklasse schwächer und grau-blau
René Merting Drachhausen (Germany)	320mm (45x)	bei 45x ein weit getrenntes Paar - B im Süden ist eine knappe Größenklasse schwächer - leichter Farbkontrast durch den Helligkeitsunterschied

STF2328

9^m.0

9^m.5

3.7"

72°

2020

Lyr

18^h29^m27.87^s / +29°55'27.20"

Mark McCarthy Fremont (California/USA)	178mm (205x)	Well split, almost wide, slight delta mag, white. Near a brighter orange star. WDS says "parallax indicates physical" but in fact there is no overlap in the parallax range, -78%
Mark McCarthy Fremont (California/USA)	317mm (553x)	near equal, ~4", light orange.

TDT908

11^m.1

12^m.2

1.8"

8°

2016

Her

18^h29^m29.45^s / +23°29'14.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

~1 delta mag, fairly wide, white stars, B seen direct but brightens with averted vision.

BU420

9^m.8

11^m.3

1.8"

274°

2010

Lyr

18^h30^m01.39^s / +37°09'44.10"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Very, very fine pair of faint stars, about 2" separation and 1 delta mag. Burnham discovered in 1872 with his 6-inch at 4.0" and called it "Probably fixed" -- though it has narrowed to 1.8" since! WDS uncertain after 33 measures. They do not share the same parallax range

STF2335

9^m.3

10^m.7

11.7"

318°

2015

Lyr

18^h30^m54.06^s / +34°16'30.90"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Three stars, the more closely separated (but still wide) B is seen with averted vision. White stars, around 2 delta mag, wide. Not physical

STF2338, KP Lyr

9^m.3

11^m.2

12.1"

301°

2017

Lyr

18^h30^m54.75^s / +38°39'33.80"

Mark McCarthy Fremont (California/USA)	178mm (205x)	Faint wide companion. Not physical
Mark McCarthy Fremont (California/USA)	317mm (553x)	Split in finder. In the scope one splits into a near equal pair.

STF2324

9^m.0

9^m.4

2.4"

149°

2018

Ser

18^h30^m58.45^s / +01°23'30.80"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Very well split white stars, half delta mag

STF2333

7^m.8

8^m.6

6.3"

333°

2019

Lyr

18^h31^m06.94^s / +32°14'43.40"

7^m.8

12^m.9

164.1"

35°

2015

7^m.8

13^m.7

85.8"

339°

2015

8^m.6

12^m.9

161.1"

37°

2015

Robert Zebahl Leipzig (Germany)	70mm (57x)	AB: 2020-05-15: Clearly separated with a noticeable difference in brightness. All in all rather faint double star without visible colors.
Robert Zebahl Leipzig (Germany)	152mm (49x)	AB: 2020-06-24: At 22x clearly elongated and almost separated. A difference in brightness can be seen. At 49x clearly separated with slight color difference: whitish and white-bluish.
Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: 1 delta mag, wide.
Mark McCarthy Fremont (California/USA)	508mm (667x)	AB: wide separated yellow and orange, 2 delta mag. (several other pairings not seen)

HU932

7^m.3

10^m.8

2.7"

78°

2016

Dra

18^h31^m19.01^s / +62°32'16.80"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

B appears with foveal coaxing, but can hold it direct. ~3 delta mag to bright light yellow A, ~2"

STF2325

5^m.8

9^m.3

12.4"

257°

2005

Sct

18^h31^m25.69^s / -10°47'45.00"

René Merting Drachhausen (Germany)	18x70	A ist sehr hell und überstrahlt sein unmittelbares Umfeld ordentlich - ab und an meine ich, B im Südwesten erkennen zu können, aber das ist zu unsicher oder mehr Wunschtraum
René Merting Drachhausen (Germany)	320mm (72x)	bei 45x zeichnet es sich ab, dass westlich außerhalb des Halos der gelblich strahlenden A-Komponente ein schwacher Lichtpunkt erkennbar ist - so richtig sicher war ich mir aber nicht, 72x bringt dann aber die Gewissheit, B steht schön abgesetzt, ist deutlich schwächer und wirkt grauweiß

STF2329

8^m.2

9^m.4

4.3"

43°

2016

Oph

18^h31^m26.49^s / +06°27'36.90"

René Merting Drachhausen (Germany)	76mm (57x)	bei 57x zeigt sich Komponente B knapp getrennt nordöstlich von A - das B-Perlchen ist gut 1.5 Magnituden schwächer als A
René Merting Drachhausen (Germany)	100mm (64x)	bei 32x entsteht schon die Ahnung von einem Begleitstern im NO von A - bei 64x sind beide Komponenten erkennbar, meist kleben sie noch zusammen und nur in guten Momenten ist eine knappe Trennung sichtbar - bei 107x ist die Trennung weiterhin knapp, aber eindeutig (soll heißen, man muss sich nicht mehr auf Momente besonderer Luftruhe verlassen)

ES784

10^m.0

10^m.5

7.1"

65°

2020

Dra

18^h31^m51.82^s / +51°10'47.80"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

~1 delta mag, fairly wide white stars. Not physical

POU3419

7^m.9

12^m.1

11.5"

240°

2015

Her

18^h32^m02.77^s / +25°04'01.70"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Easy pair, white stars, wide separation, ~3 delta mag

RST5450

10^m.3

0.7"

253°

2016

Ser

18^h32^m32.53^s / +00°36'06.90"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

At very best moments, which are fleeting, I see very tight but nicely split pair, 1 delta mag, both faint. Resolves from a haze. Nice.

STF2336

9^m.2

10^m.2

6.8"

9°

2016

Her

18^h32^m49.25^s / +13°49'05.80"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White A and >1 delta mag B, wide. WDS claims physical on the proper motions, but the stars do not share the same parallax range, so they cannot be gravitationally bound

STTA171

7^m.0

8^m.1

150.1"

328°

2017

Lyr

18^h32^m51.48^s / +38°49'59.80"

René Merting

Drachhausen (Germany)

18x70

ein weit auseinander stehendes Paar - B im Nordwesten ist halb so hell - mehr gibt es nicht zu sagen

STF2357

9^m.3

9^m.9

4.7"

271°

2018

Dra

18^h32^m53.86^s / +63°42'33.00"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Wide ~1 delta mag white

POU3427

10^m.1

10^m.4

6.8"

81°

2018

Her

18^h32^m58.78^s / +24°19'49.70"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Easy wide near equal stars

STT356

7^m.3

9^m.2

28.3"

302°

2019

Lyr

18^h33^m14.62^s / +40°09'34.20"

7^m.3

10^m.9

48.1"

9°

2015

9^m.2

10^m.9

45.6"

45°

2015

René Merting Drachhausen (Germany)	100mm (20x)	AB: bei 32x ein weit getrenntes Pärchen - Komponente B im NW ist sehr schwach und mindestens 2, wenn nicht sogar 3 Größenklassen schwächer als A - zurück auf 20x zeigt sich STT356 ordentlich getrennt und Komponente B ist nicht ganz so schwach wie der der gut 5° östlich stehende ähnlich aussehende Doppelstern STF2431
Sarah Gebauer Germany	100mm (80x)	AB: weit getrennt, insgesamt sehr schwach, die nordöstliche Komponente deutlicher schwächer, ich muss schon genau hinsehen

STT355

6^m.4

10^m.3

37.8"

249°

2015

Oph

18^h33^m23.30^s / +08°16'05.70"

René Merting

Drachhausen (Germany)

76mm (29x)

Komponente A ist leider so hell, dass ich die wesentlich schwächere B-Komponente erst bei 57x außerhalb des Lichtkranzes von A erkennen konnte, Trennung mehr als komfortabel - zurück auf 29x kann ich B jetzt auch erkennen - trotzdem ein extrem unansehnliches Sternpaar

COU204

10^m.2

10^m.7

11.9"

130°

2018

Her

18^h33^m31.63^s / +21°02'00.80"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Easy wide, ~1 delta mag. Not physical

STF2339

AB-CD

7^m.5

8^m.7

1.7"

277°

2018

Her

18^h33^m45.62^s / +17°43'55.90"

Mark McCarthy Fremont (California/USA)	178mm (205x)	Very pretty close >1 delta mag pair. AB is HU322 7.74/8.91 0.2", and CD is WAK21 9.3/9.56 0.5", a double-double!
Mark McCarthy Fremont (California/USA)	203mm (333x)	White and dull white B. Close but well separated, ~1" (AB-CD seen. AB is Hu 322 1 delta mag 0.2", good to try again at 20")

HU322

7^m.7

8^m.9

0.2"

92°

2019

Her

18^h33^m45.62^s / +17°43'55.90"

Mark McCarthy

Fremont (California/USA)

508mm (889x)

Very subtle notched elongation, PA on an E-W line but a little cocked from WAK 21. Component of STF 2339 AB-CD

WAK21

9^m.3

9^m.6

0.5"

263°

2019

Her

18^h33^m45.62^s / +17°43'55.90"

Mark McCarthy

Fremont (California/USA)

508mm (889x)

Clean split, near equal bluish color stars, PA E-W. Component of STF 2339 AB-CD. No Gaia data so can't determine if gravitationally bound

SLE209

8^m.2

12^m.0

10.3"

26°

2015

Lyr

18^h33^m55.17^s / +32°07'50.50"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Light yellow-orange star. With seeing and averted vision, a small point at A'd diffraction ring appears, >2 delta mag and slightly more than 1" separation. Not physical

A1377 & STF2348 & SLE216

A1377

6^m.2

6^m.4

0.2"

134°

2016

Dra

18^h33^m56.69^s / +52°21'12.60"

STF2348

AB-C

5^m.5

8^m.7

25.7"

271°

2012

SLE216

AB-D

5^m.5

11^m.2

93.7"

338°

2005

SLE216

AB-E

5^m.5

12^m.2

109.1"

232°

2005

René Merting Drachhausen (Germany)	100mm (20x)	STF2348 (AB-C): bei 32x ein auffälliges, klar getrenntes Sternpaar - A strahlt gelblich, B im Westen ist weißgrau und mindestens 2 Größenklassen schwächer - zurück auf 20x ist B ebenfalls knapp erkennbar
Mark McCarthy Fremont (California/USA)	508mm (205x)	STF2348 (AB-C): Very pretty yellow-orange A and yellow-blue B, well separated.

TDT939

10^m.8

0.6"

8°

1991

Her

18^h34^m15.05^s / +21°01'05.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Beautiful clean split, half delta mag, white stars, very close

TDT938

11^m.5

11^m.8

0.9"

67°

2016

Her

18^h34^m18.40^s / +22°58'27.60"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Very faint, exceptionally fine, split with seeing and B is slightly brighter with averted vision.

STF2337

8^m.1

9^m.1

16.6"

297°

2018

Sct

18^h34^m55.15^s / -14°42'10.60"

René Merting Drachhausen (Germany)	100mm (20x)	bei 20x gut trennbar, Helligkeitsunterschied zwischen A und B gut eine halbe Magnitude - bei 32x noch einfacher, und Verstärkung des schönen Farbkontrastes, Komponente A im SO ist weiß-bläulich und Komponente B zinnober-rot
René Merting Drachhausen (Germany)	320mm (45x)	bei 45x ist das Paar gut getrennt - B steht im NW von A und - A wirkt weiß und B … farbiger

COU205

9^m.4

10^m.7

0.3"

152°

1996

Her

18^h35^m17.64^s / +21°44'36.80"

Mark McCarthy

Fremont (California/USA)

508mm (1067x)

Notched elongation, I have the impression of significant delta mag

★★

STT359

6^m.3

6^m.6

0.7"

3°

2019

Her

18^h35^m30.40^s / +23°36'19.90"

Robert Zebahl Leipzig (Germany)	102mm (160x)	2020-11-10: Clearly elongated with slight notching and little difference in brightness. I estimated the position angle to 0°.
Uwe Pilz Leipzig (Germany)	105mm (198x)	leicht eingekerbt, Abstand 0“75
Uwe Pilz Leipzig (Germany)	120mm (250x)
Mark McCarthy Fremont (California/USA)	152mm (175x)	Light orange near equal stars, notched elongation, overlapping disks. Physical with a 219-year period, at apastron now
Mark McCarthy Fremont (California/USA)	203mm (667x)	Kissing 8" 333x, hairline split 667x. Near equal white A and bluish white B.
Frederik Wanink Itterbeck (Germany)	254mm (640x)	getrennt
Mark McCarthy Fremont (California/USA)	317mm (553x)	Nice! ~0.8" equal yellow-orange stars.
Uwe Pilz Leipzig (Germany)	320mm (388x)	ein sehr ruhiger Abend gestattete die Nutzung von 12 Zoll
Mark McCarthy Fremont (California/USA)	508mm (333x)	Light yellow near equal split, very close. 219 year period

STF2345

9^m.1

10^m.5

12.3"

226°

2018

Her

18^h35^m31.17^s / +21°04'27.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

V998 Her. Wide one delta [The A star is variable is an eclipsing binary but the eclipsing component is apparently only detectable with speckle interferometry. The Struve pair is not physical]

BU643 & STF2342, FR Ser

BU643

6^m.5

12^m.5

13.7"

325°

2015

Ser

18^h35^m36.48^s / +04°56'09.80"

STF2342

6^m.5

9^m.6

33.6"

0°

2015

René Merting Drachhausen (Germany)	18x70	STF2342 (AC): das war eine schwere Geburt, Komponente A ist schon sehr hell und C im Norden so schwach, dass sie gerade so zu sehen ist
René Merting Drachhausen (Germany)	76mm (29x)	STF2342 (AC): bei 29x ist Komponente C mit ordentlich Abstand zu A zu erkennen - Helligkeitsunterschied enorm, gut 3 Größenklassen - dadurch wirkt C grau gegen die weiß strahlende A-Komponente
René Merting Drachhausen (Germany)	100mm (20x)	STF2342 (AC): bei 20x weit getrenntes Pärchen, Komponente C im Nord-NO sehr schwach, mindestens 2 Größenklassen schwächer - Komponente A weißlich, C durch den großen Farbunterschied ohne Strahlkraft und deshalb kupfern

★★

STT358

6^m.9

7^m.1

1.7"

146°

2019

Her

18^h35^m53.22^s / +16°58'32.50"

Uwe Pilz Leipzig (Germany)	105mm (110x)	fast gleich hell, deutlich trennbar
Mark McCarthy Fremont (California/USA)	203mm (333x)	Pretty, near equal white, perfect disks.
Mark McCarthy Fremont (California/USA)	508mm (205x)	Yellow-white stars, half delta mag, well split. 380 year period

TDT952

11^m.4

11^m.6

1.1"

69°

2012

Her

18^h35^m54.54^s / +25°41'33.40"

Mark McCarthy

Fremont (California/USA)

508mm (1067x)

B appears with seeing within A's first diffraction, very faint, significant delta mag

A249

10^m.1

10^m.2

1.0"

278°

2016

Her

18^h36^m03.12^s / +24°51'49.30"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Fine pair, equal white, nicely split ~1"

★

STF2351

7^m.6

5.0"

160°

2020

Lyr

18^h36^m12.00^s / +41°16'41.20"

Robert Zebahl Leipzig (Germany)	70mm (67x)	2021-08-15: Beautifully separated with similar bright components. Mild but beautiful color contrast: light yellow/orange & light blue.
René Merting Drachhausen (Germany)	100mm (64x)	bei 32x sind zwei Sterne zu erkennen, die sich noch berühren - bei 64x zeigt sich dann nein knapp getrenntes Pärchen - fast kein Helligkeitsunterschied, ich habe Komponente A für die schwächere der beiden in etwas gleich hellen Sterne gehalten - Komponente B ist warm-weiß
Sarah Gebauer Germany	100mm (80x)	ein superkleines, superschwaches, superenges Augenpärchen, ganz dich beeinander und dennoch getrennt, gleich hell
Mark McCarthy Fremont (California/USA)	178mm (205x)	White, <1 delta mag, wide. WDS uncertain; there is a -15% parallax overlap, so not physical
Mark McCarthy Fremont (California/USA)	317mm (553x)	Bright yellow-orange equal pair, wide.

A355

9^m.4

10^m.9

1.3"

143°

2017

Ser

18^h36^m19.32^s / +05°15'37.50"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Tough for tonight's conditions, poor transparency and a nearly full moon. Very faint star with very close companion like two smudges

STF2349

5^m.4

9^m.4

7.2"

204°

2016

Lyr

18^h36^m37.34^s / +33°28'08.50"

Robert Zebahl Leipzig (Germany)	102mm (125x)	Easy to split with a clear difference in brightness. The companion only appeared as a tiny star.
Uwe Pilz Leipzig (Germany)	105mm (288x)
Uwe Pilz Leipzig (Germany)	105mm (288x)	viel schwieriger, als es die Daten vermuten lassen (7")
Mark McCarthy Fremont (California/USA)	178mm (205x)	Bright white A, B is a ghostly grey, faint but seen with direct vision, well separated. WDS is uncertain; there is a 38% parallax overlap, 1,188 AU weighted separation, and the stellar masses are high, 3.58 & 1.22 -- so it may well be gravitationally bound
Mark McCarthy Fremont (California/USA)	317mm (277x)	Bright white and faint ruddy B, fairly close ~4".

★★

alpha Lyr, 3 Lyr, Vega

H5 39

0^m.1

9^m.5

83.7"

184°

2017

Lyr

18^h36^m56.33^s / +38°47'01.20"

STFB9

0^m.1

11^m.0

76.0"

255°

2012

STFB9

0^m.1

9^m.5

86.6"

39°

2017

Jörg S. Schlimmer Germany	127mm (203x)	um Vega mehrere Beugungsringe sowie Speckles sichtbar, B leicht zu sehen, E nicht sichtbar
Jörg S. Schlimmer Germany	127mm (203x)	verschiedene Vergrößerungen zwischen 40 und 203 fach, Komponente E zeitweise bei indirektem Sehen sichtbar, da Himmel heute klarer ist

STF2346

7^m.9

10^m.0

30.3"

298°

2015

Oph

18^h37^m15.29^s / +07°31'42.80"

René Merting

Drachhausen (Germany)

76mm (29x)

bei 29x ist die B-Komponente trotz der geringen Helligkeit relativ leicht gut getrennt westlich von A auszumachen - B wirkt 2 Größenklassen schwächer

STT363

7^m.5

8^m.1

0.6"

336°

2018

Dra

18^h37^m23.92^s / +77°41'12.40"

Frederik Wanink

Itterbeck (Germany)

254mm (640x)

als 8 zu sehen

Frederik Wanink

Itterbeck (Germany)

254mm

../projects/double-stars/frederik-wanink/photographs/STT%20363.jpg

TRA1

8^m.5

11^m.9

9.4"

164°

2015

Lyr

18^h37^m53.41^s / +35°05'44.80"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Appeared as an ordinary white star. There was no secondary listed in SkyTools so I didn't know what to look for, and didn't notice the 11.90 B star listed in WDS (it was probably too faint for 7-inch anyway). TRA is Veselka Trajkovska who has this one discovery to her name (but numerous measurements made of other stars) using the 25-inch refractor at the Belgrade Observatory. The B star might not be in Gaia, but if I have it correctly it is 13.02 mag and they do not share the same parallax range, so they are not gravitationally bound

STF2347

8^m.1

9^m.8

3.4"

259°

2001

Ser

18^h37^m56.63^s / -00°23'09.10"

René Merting Drachhausen (Germany)	100mm (107x)	bei 107x ist Komponente B sehr schwer und ganz knapp getrennt südwestlich von A erkennbar, bei 64x hatte ich nur eine Ahnung davon, kein Zuckerschlecken
Mark McCarthy Fremont (California/USA)	203mm (667x)	Orange and light blue, pretty without diffraction, wide separation, 2 delta mag. (not physical)

★★

STF2356

8^m.8

9^m.2

1.0"

63°

2015

Lyr

18^h38^m22.51^s / +28°41'49.70"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Exquisite! Just split, 1 delta mag so it looks like a split snowman, light orange stars. Very nice. WDS uncertain. Sadly there is no parallax overlap, -33%, so these are not gravitationally bound

STF2362

7^m.5

8^m.7

4.4"

187°

2016

Lyr

18^h38^m25.70^s / +36°03'11.30"

Robert Zebahl Leipzig (Germany)	70mm (67x)	2021-08-15: Clearly separated, distinct difference in brightness at still rather small angular distance. As a double star well visible. The primary component appeared white-yellowish.
René Merting Drachhausen (Germany)	100mm (64x)	bei 32x eine kleine Andeutung nach Süden, bei 64x dann der Beweis und knappe Trennung zwischen A und B - ein schönes enges Pärchen - B ist halb so hell
Mark McCarthy Fremont (California/USA)	152mm (175x)	1 delta mag, blue-white A and ruddy B, well split. WDS is uncertain but this is probably gravitationally bound: 28% parallax overlap, 428 AU weighted separation, 1.72/1.32 solar masses
Mark McCarthy Fremont (California/USA)	178mm (205x)	White A and light yellow B, wide, about 1.5 delta mag. WDS is uncertain; there is 27% parallax overlap, a close 428 AU weighted separation, and sizable mass 1.72 & 1.32 -- it may well be gravitationally bound
Mark McCarthy Fremont (California/USA)	317mm (277x)	White-orange A, lighter orange B, 1-2 delta mag, well split.

★★

STF2358

9^m.8

10^m.2

2.5"

224°

2016

Lyr

18^h38^m35.04^s / +30°43'20.10"

Mark McCarthy Fremont (California/USA)	178mm (205x)	Faint, near equal, very close but still split. WDS uncertain; there is no parallax overlap
Mark McCarthy Fremont (California/USA)	317mm (553x)	Faint near equal <2", another brighter / wider pair nearby. Nice!

STT360

6^m.9

9^m.1

1.7"

282°

2015

Ser

18^h38^m39.84^s / +04°51'17.30"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Lovely orange stars, two delta mag, used the 8 inch mask to clean up the image, very nice

A1379

9^m.7

10^m.3

2.1"

211°

2016

Dra

18^h38^m43.02^s / +52°43'27.60"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Faint pair, resolved with seeing, B is flickering between direct and averted vision.

STF2368

7^m.6

7^m.8

1.9"

321°

2017

Dra

18^h38^m51.27^s / +52°20'38.20"

Mark McCarthy Fremont (California/USA)	203mm (205x)	Brilliant white near equal stars, nicely separated ~2"
Mark McCarthy Fremont (California/USA)	508mm (205x)	Near equal white, close, ~1". Hair split at 205x.

COU207

9^m.2

10^m.6

1.6"

298°

2016

Her

18^h38^m54.97^s / +22°21'58.70"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Light yellow A and light orange B, nicely split, ~2 delta mag.

★

STF2360

8^m.0

9^m.2

2.5"

358°

2016

Her

18^h39^m19.16^s / +20°55'58.90"

Mark McCarthy Fremont (California/USA)	152mm (175x)	! very fine, faint 1 delta mag light yellow-orange, close split
Mark McCarthy Fremont (California/USA)	203mm (333x)	Fainter white and 1 delta mag bluish B, ~4" nice pair.
Mark McCarthy Fremont (California/USA)	508mm (205x)	White, ~2 delta mag, wide ~3"

MIL5

10^m.1

10^m.7

3.2"

58°

2016

Her

18^h39^m25.51^s / +15°39'32.90"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Fine faint close pair, 3", <2 delta mag. WDS uncertain, but the two stars do not share the same parallax range

ES787

8^m.9

11^m.7

8.3"

38°

2020

Dra

18^h39^m56.26^s / +51°05'34.10"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

V410 Dra. B noticed with averted vision then held direct as a faint point, ~3 delta mag and wide, white stars. Not physical

STF2364

8^m.1

10^m.3

10.6"

174°

2019

Her

18^h40^m05.13^s / +24°42'12.40"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Pretty white stars, 2 delta mag wide B. WDS physical, however the stars do not share the same parallax range, -73%, so they are not gravitationally bound

S704

8^m.5

9^m.1

58.1"

264°

2019

Oph

18^h40^m21.03^s / +09°41'50.60"

René Merting Drachhausen (Germany)	76mm (29x)	bei 29x ein auffallendes Pärchen, komfortabel getrennt - Komponente B im Westen wirkt eine viertel Größenklasse schwächer - leichter Farbkontrast, A wirkt warmweißer
René Merting Drachhausen (Germany)	100mm (20x)	bei 32x zwei weit auseinander stehende Sterne - Komponente A im Osten weiß, B im Westen braun-orange kaum schwächer - zurück auf 20x sehe ich beide Komponenten ebenfalls weit getrennt

BU1328

9^m.0

9^m.9

2.1"

284°

2018

Ser

18^h40^m57.82^s / +03°01'36.40"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Two orange stars, 1 delta mag, well split.

STF2367

7^m.7

8^m.0

0.4"

74°

2019

Lyr

18^h41^m16.36^s / +30°17'40.90"

AB-C

7^m.0

8^m.8

14.1"

192°

2019

AB-D

7^m.0

12^m.0

21.9"

84°

2007

AB-E

7^m.0

11^m.0

151.7"

341°

2002

René Merting Drachhausen (Germany)	100mm (32x)	AB-C: bei 32x einfach zu trennen - A-Komponente leicht gelblich, Komponente C südlich ist deutlich schwächer und strahlt zinnober
Mark McCarthy Fremont (California/USA)	178mm (205x)	AB-C: Light yellow-orange A and light blue B, >1 delta mag, very wide. (Need to return to this one, AB is a short 94-year period 0.45", nearing apastron.) WDS calls AB-C physical on the similar proper motions, unfortunately there is no parallax data for A
Frederik Wanink Itterbeck (Germany)	254mm (640x)	AB: nicht als DS gesehen

HU754

8^m.4

11^m.5

1.3"

93°

1991

Dra

18^h41^m44.99^s / +51°07'33.60"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Very fine B, a tiny point outside brilliant white A's diffraction. ~3 delta at least.

STF2372

6^m.5

7^m.7

25.0"

82°

2019

Lyr

18^h42^m08.09^s / +34°44'46.70"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x weit getrennt, bei 64x noch weiter getrennt :-D, Komponente B halb so hell wie A und deshalb gräulicher
Uwe Pilz Leipzig (Germany)	105mm (88x)	weiß und blaugrün, erkennbar bei 21x
Mark McCarthy Fremont (California/USA)	317mm (277x)	Yellow-green A and slightly blue-white B. 1 delta mag, very wide.

STF2371

9^m.7

10^m.0

10.0"

56°

2018

Lyr

18^h42^m12.44^s / +27°38'32.30"

Mark McCarthy Fremont (California/USA)	178mm (205x)	Easy near equal white pair. WDS uncertain, but there is 34% parallax overlap, 6,674 AU weighted separation, which is kind of far, but stellar masses are 2.80 & 2.63, so maybe enough. No radial velocity data
Mark McCarthy Fremont (California/USA)	317mm (553x)	Half delta mag, wide light orange and blue-white pair.

STF2398

9^m.1

10^m.0

11.4"

181°

2020

Dra

18^h42^m46.69^s / +59°37'49.40"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Very light orange stars, ~1 delta mag, wide. 408 year period

STF2380

7^m.3

8^m.7

25.5"

8°

2015

Lyr

18^h42^m55.42^s / +44°55'30.90"

René Merting Drachhausen (Germany)	100mm (20x)	bei 32x einfach zu trennen - Komponente A strahlt gelblich, Komponente B im Norden wirkt eher grau und ist gut 1.5 Größenklassen schwächer - zurück auf 20x wird das Paar etwas attraktiver, weil beide Sterne nun enger zusammen stehen, A ist noch dominanter
Sarah Gebauer Germany	100mm (80x)	gut getrennt, ein eher schwaches Pärchen, die südliche Komponente ist etwas heller, die nördliche ist dennoch gut sichtbar

BU645

7^m.3

12^m.1

9.3"

305°

2016

Her

18^h43^m14.48^s / +19°27'59.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Pretty cream yellow-white A and slightly orange B, wide ~10", very large delta mag, >4 delta.

STI2383

11^m.1

11^m.2

14.5"

342°

2016

Dra

18^h43^m19.16^s / +56°36'55.80"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Faint near equal stars, wide, seems to be in a small cluster. Physical pair.

STF2378

8^m.9

9^m.9

11.5"

190°

2018

Lyr

18^h43^m21.93^s / +35°32'55.30"

René Merting Drachhausen (Germany)	10x50	beide Sterne sind nebeneinander stehend erkennbar, aber noch nicht getrennt, schwache Einschnürung nur in guten Momenten
Mark McCarthy Fremont (California/USA)	178mm (205x)	1 delta, white, wide. WDS says its physical due to parallax, and indeed I find 62% overlap in the parallax ranges and a 3,228 AU weighted separation, stellar masses 2.13 & 1.67 -- so may be gravitational. No radial velocity data

STF2374

9^m.6

10^m.4

13.4"

40°

2016

Lyr

18^h43^m27.56^s / +27°42'54.60"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

1 delta mag, white, wide. Not physical

STF2376

8^m.7

9^m.3

22.3"

63°

2015

Lyr

18^h43^m42.26^s / +30°24'16.90"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Triple? 1 delta mag between each, forms a triangle, wide separations.

STT361

8^m.2

9^m.4

22.6"

172°

2015

Ser

18^h43^m42.36^s / +05°38'59.80"

René Merting Drachhausen (Germany)	18x70	das Pärchen lässt sich schön trennen - B im Süden ist eine Größenklasse schwächer als die auch schon schwach wirkende A-Komponente
René Merting Drachhausen (Germany)	76mm (29x)	bei 29x zeigt sich Komponente B im Süden mehr als gut getrennt etwas mehr als halb so hell wie A - ein relativ schwaches Sternpaar in einem Umfeld mit vielen helleren Sternen
René Merting Drachhausen (Germany)	100mm (20x)	bei 20x zeigen sich zwei schwache Sterne weit getrennt, Komponente B im Süden - bei 32x interessanter Farbkontrast, Komponente A dunkelgelb, B ockerbraun

STI2384

11^m.8

3.8"

142°

2015

Dra

18^h43^m58.14^s / +55°58'31.30"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Very faint, barely there, averted vision hardly helps, but there are two hazy points, wide ~4". Not physical

STF2403

6^m.2

8^m.3

1.1"

278°

2011

Dra

18^h44^m18.25^s / +61°02'53.30"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Very tough. B is a brightening or condensation on A's diffraction ring, when A settles down with seeing.

★

HU325

10^m.2

10^m.8

0.3"

7°

2008

Her

18^h44^m18.57^s / +20°52'17.80"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Hairline split, ~1 delta mag, very fine pair

★★★

epsilon Lyr

STF2382, 4 Lyr, epsilon 1 Lyr

5^m.2

6^m.1

2.2"

345°

2020

Lyr

18^h44^m20.34^s / +39°40'12.40"

STFA37

AB-CD

4^m.7

4^m.6

209.5"

172°

2016

STFA37

5^m.2

10^m.1

149.5"

137°

2015

STF2383, 5 Lyr, epsilon 2 Lyr

5^m.2

5^m.4

2.4"

75°

2020

Christopher Hay Seeheim (Germany)	naked eye	STFA37 (AB-CD): While waiting for Comet Neowise at 3 in the morning in July 2020 surprised myself with my first naked-eye separation of Alpha1 und Alpha2 Capricornis (observing site at 50° northern latitude, Alpha1/2 passing through meridian). Encouraged by this, I lay down and had a close look at Epsilon Lyrae, without really expecting to be able to split it naked-eye, having never succeeded previously. At first Epsilon Lyrae appeared as a very short dash of light. Then the dash resolved into two pinpoints. After 15 years in the hobby and at age 60, at last got Eps Lyr split! No precise prior PA knowledge. After memorising PA as seen naked-eye carefully, confirmed it with binoculars. Eps Lyr is the third-easiest physical double in the (northern hemisphere) summer sky for the naked eye, after Zeta UMa (much easier) und Alpha Lib (marginally easier).
Christopher Hay Seeheim (Germany)	2x54	STFA37 (AB-CD): Clean split. Actually more pleasant than in 4x10 binoculars, presumably due to more steady handheld view.
Robert Zebahl Leipzig (Germany)	55mm (59x)	STF2382 (AB): At 42x slightly elongated, at 59x elongated and obviously notched.
Robert Zebahl Leipzig (Germany)	55mm (59x)	STF2383 (CD): At 42x clearly elongated, but without any visible notch. At 59x split with touching diffraction disks.
Robert Zebahl Leipzig (Germany)	70mm (57x)	STF2382 (AB): Obviously seen as figure '8'.
Robert Zebahl Leipzig (Germany)	70mm (57x)	STF2383 (CD): Split, but extremely tight with almost touching diffraction disks.
René Merting Drachhausen (Germany)	76mm (95x)	AB-CD: bei 29x schön getrennt erkennbar, ohne dass sich AB und CD schon trennen lassen AB: bei 57x leicht länglich mit kleiner Einschnürung - bei 95x schön eng getrennt, B nördlich wirkt etwas schwächer- bei 127x wunderschön, das Sternpaar hat zwei Beugungsscheibchen, die wie ein Heiligenschein um die beiden Sterne stehen CD: bei 57x eine 8 - bei 95x ein schön eng getrenntes Pärchen gleichheller Sterne - bei 127x wunderschön, das Sternpaar hat zwei Beugungsscheibchen, die wie ein Heiligenschein um die beiden Sterne stehen EF und I: bei 127x sind alle drei Sterne (I 10.1 mag / E 12.3 mag / F 12.7 mag) erkennbar
René Merting Drachhausen (Germany)	100mm (107x)	AB: bei 64x ist das Sternpaar mit leichter Einschnürung und Nord-Süd-Ausdehnung erkennbar - beide Sterne stehen minimal enger zusammen als das südlichere Paar CD - bei 107x knappe Trennung, Komponente B nördlich ist mindestens eine halbe Größenklasse schwächer als A CD: bei 64x als 8 mit Ost-West-Ausdehnung erkennbar - bei 107x knapp getrennt, beide Komponenten sind etwa gleich hell
Sarah Gebauer Germany	100mm (136x)	ein Test mit dem neuen Refraktor, um einen Vergleich zum 6''-Newton zu ziehen: bei 136x schon astrein getrennt, natürlich ziemlich eng und ganz fein getrennt, aber dennoch ein überraschend positives Ergebnis
Robert Zebahl Leipzig (Germany)	102mm (125x)	Stunning view of the components A-D and I!
Uwe Pilz Leipzig (Germany)	105mm (26x)	bei 22x nicht trennbar
Jörg S. Schlimmer Germany	127mm (203x)	easy to split
Sarah Gebauer Germany	150mm (250x)	August 2019 zum ersten Mal die nah beieinanderstehenden Komponenten sauber getrennt, ein grandioser Doppel-Doppel-Anblick
Winfried Kräling Marburg (Germany)	152mm (175x)
René Merting Drachhausen (Germany)	320mm (144x)	bei 144x sind die Komponenten von AB und CD gerade so getrennt voneinander erkennbar, sie tanzen wie wild miteinander - mit Arperturmaske und Abblendung auf 120 mm zeigen die vier nun deutlich schwächeren Sterne schöne Beugungsscheibchen und sind besser getrennt voneinander sichtbar
Uwe Pilz Leipzig (Germany)	320mm (200x)	7 Komponenten!! A-B-C-D-E-F-I

Berthold Fuchs

Wiesbaden (Germany)

130mm

Double-Double

../projects/double-stars/berthold-fuchs/photographs/epsilon%20Lyrae.png

★★

STFA38, zeta Lyr, zeta 1/2 Lyr

4^m.3

5^m.6

43.7"

150°

2018

Lyr

18^h44^m46.36^s / +37°36'18.40"

Christopher Hay Seeheim (Germany)	7x45	Handheld. Clearly split, almost wide. Primary bluish-white. Fantastic 8.6° FOV together with Eps1/2 and Delta1/2 Lyrae. One of the best doubles for 7x.
Christopher Hay Seeheim (Germany)	10x42	Clearly separated. Colour contrast between bluish A and orangish D is there if one knows it, but not as striking as in 15x45 binoculars.
Christopher Hay Seeheim (Germany)	15x45	Component A clear blue-white, component D very pale tangerine orange. Wide split. Colour contrast seems even greater than that of nearby Delta 1/2 Lyrae. Physical double.
René Merting Drachhausen (Germany)	76mm (29x)	bei 29x ein schön getrenntes Pärchen - D im Südosten ist 1.5 Magnituden schwächer und wirkt blaugrau gegen die weißgelbe A-Komponente
Mark McCarthy Fremont (California/USA)	80mm (13x)	Zeta 2 Lyr. Slightly greenish-white stars. Best view in finder, cleaner. Wide, 1 delta mag.
René Merting Drachhausen (Germany)	100mm (20x)	bei 20x weit getrennt, Komponente A weißlich, D leicht gelblich
Sarah Gebauer Germany	100mm (80x)	ein typisches Augenpaar, der nördliche Stern leuchtet leicht heller als der südliche
Uwe Pilz Leipzig (Germany)	105mm (88x)	weiß-orange
Sarah Gebauer Germany	150mm (85x)	weit getrennt, unspektakulär
Winfried Kräling Marburg (Germany)	152mm (175x)
Mark McCarthy Fremont (California/USA)	152mm (175x)	Wide, white-yellow stars, one delta

Frederik Wanink

Itterbeck (Germany)

254mm

../projects/double-stars/frederik-wanink/photographs/Zeta%20Lyrae.jpg

WEB7

9^m.6

10^m.3

11.3"

50°

2016

Lyr

18^h44^m47.67^s / +44°57'37.80"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Near equal, white, wide, fairly faint. WDS says physical from proper motions. There is 34% parallax range overlap, a far 8,343 AU weighted separation, but higher stellar masses 2.94 and 2.57, so it might be gravitational. Time will tell

ES1424

8^m.4

13^m.0

7.9"

90°

2016

Lyr

18^h44^m57.58^s / +44°21'32.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

A is a light orange & bright, B seen easily as a dull pin point, wide ~5", large delta mag.

COU1792

11^m.0

12^m.0

1.1"

347°

2011

Lyr

18^h45^m01.28^s / +40°51'28.80"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very faint but just split with seeing when haze reduces to points, one slightly brighter than the other

STF2395

7^m.9

10^m.5

8.5"

308°

2015

Lyr

18^h45^m03.66^s / +46°08'07.50"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White A and light blue B. B is pretty faint, just barely seen direct. WDS says physical, but there is -23% parallax overlap, so that's incorrect

ES2020

10^m.3

12^m.0

3.5"

342°

2016

Lyr

18^h45^m09.42^s / +37°56'11.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

B star flashes into view with averted vision, three delta mag, >3", can hold direct intermittently with seeing and transparency

STF2392

9^m.2

10^m.5

23.8"

173°

2015

Lyr

18^h45^m09.99^s / +39°13'32.80"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Obvious slightly blue stars, well split, 2 delta mag. Part of a two plus one with the other much further split and a little fainter than B (AC. There is a BC pair, 11th mag, 26")

★

STF2393

7^m.8

10^m.4

18.2"

24°

2020

Lyr

18^h45^m10.84^s / +38°18'54.60"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Pretty light orange and light blue! Wide separation, 1.5 delta mag.

COU1608

11^m.5

13^m.6

1.1"

230°

2016

Lyr

18^h45^m17.02^s / +38°55'51.40"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Using averted vision, can stretch the haze around B and barely resolve a point ~1" separated. Extremely faint, at limit

ROE50

10^m.8

11^m.7

4.7"

282°

2015

Lyr

18^h45^m19.87^s / +40°04'58.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

A is a light blue and B is much fainter orange color, wide ~5"

★

STF2375

6^m.3

6^m.7

2.6"

120°

2019

Ser

18^h45^m28.36^s / +05°30'00.40"

René Merting Drachhausen (Germany)	76mm (95x)	bei 57x erkenne ich eine Ameisen - beide Sterne stehen kurz vor der Trennung - bei 95x dann ein wunderschönes Bild, es zeigen sich zwei gleich helle Sterne, äußerst knapp getrennt
René Merting Drachhausen (Germany)	100mm (64x)	bei 64x sehe ich zwei sehr dicht stehende Sterne, mit etwas Geduld wird ab und an eine knappe Trennung deutlich - beide sind in gleich hell (ich habe sogar A und B falsch zugeordnet, weil ich B knapp heller fand) und strahlen um die Wette in weiß
Stefan Loibl Rosenheim (Germany)	102mm (102x)	'Tweedledum' and 'Tweedledee', recognizable as double star at 68x, clearly split at 102x, components equally bright, quadruple, visual double

STF2394

9^m.6

10^m.0

6.9"

203°

2020

Lyr

18^h45^m28.48^s / +42°02'07.40"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Pretty wide near equal white.

STF2381

8^m.3

10^m.4

8.9"

122°

2018

Lyr

18^h45^m30.77^s / +28°15'24.30"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White A and light blue B, wide. WDS says physical, but again no parallax overlap -3%

POU3532

12^m.3

12^m.4

9.8"

211°

2015

Her

18^h45^m31.49^s / +23°16'26.80"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Not visible with 8" so removed mask. Wide separation pair, in middle of two other stars forming a line [not physical]

POU3533

12^m.7

12^m.8

12.5"

328°

2015

Her

18^h45^m36.33^s / +23°57'28.10"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Wide separated, half delta mag faint pair. Picked out fairly easily in crowded field. [not physical]

BU51

11^m.9

12^m.9

6.0"

297°

2015

Lyr

18^h45^m39.17^s / +39°40'45.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

A is light orange & bright, BC is and obvious blue pair ~1 delta mag between B and C, wide ~3-4". Nice! Burnham: "Unimportant triple a short distance from Epsilon Lyrae, noted with 6-inch."

SLE120

11^m.6

11^m.7

6.9"

115°

2015

Lyr

18^h45^m49.38^s / +31°13'17.80"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Fairly wide, about half delta mag, 7". Plain stars [not physical]

MLB1079

11^m.2

12^m.5

7.4"

279°

2016

Dra

18^h45^m49.76^s / +59°22'27.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

A-BC is relatively bright white A, wide separation. The B of BC is easily but C is more difficult, fainter, but yet a steady point with seeing

★

STF2390

7^m.4

8^m.6

4.3"

155°

2016

Lyr

18^h45^m49.83^s / +34°31'06.60"

René Merting Drachhausen (Germany)	100mm (64x)	bei 64x ploppt Komponente B knapp getrennt auf, vorher war sie unsichtbar - Farben Fehlanzeige
Uwe Pilz Leipzig (Germany)	105mm (88x)
Mark McCarthy Fremont (California/USA)	317mm (277x)	Orange and very wide separation B, 2x fainter B, bluish.

STF2373

7^m.4

8^m.4

4.3"

336°

2018

Sct

18^h45^m51.33^s / -10°29'34.10"

René Merting

Drachhausen (Germany)

100mm (64x)

bei 64x ist Komponente B nördlich oberhalb von A knapp getrennt erkennbar - Helligkeitsunterschied mehr als eine Größenklasse, aber kein Farbkontrast

SLE366

10^m.6

12^m.4

10.0"

337°

2015

Lyr

18^h46^m04.64^s / +27°34'17.30"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Faint orange and blue, pretty pair, wide about 9", almost one delta mag

MLR7

9^m.9

11^m.0

1.1"

303°

2010

Dra

18^h46^m07.33^s / +61°21'10.60"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Extremely fine, ~1 delta, ~1" separation, resolved only with seeing when stars harden to points.

HU937

8^m.8

9^m.9

1.0"

333°

2016

Dra

18^h46^m13.38^s / +64°11'44.40"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Hairline split at 205x, more definite split with 333x, ~1 delta mag. A is yellow-white, B is a deeper yellow-orange. 225.53 year period

TDT1045

11^m.7

11^m.8

0.9"

301°

1991

Aql

18^h46^m18.10^s / +08°20'43.00"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very marginal. very faint star feels not round

POU3541

11^m.7

12^m.5

12.1"

289°

2015

Her

18^h46^m18.80^s / +24°15'38.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Another faint pair, easily picked out in the field, one delta mag, wide. [not physical]

TDT1047

11^m.5

11^m.7

0.6"

228°

2016

Lyr

18^h46^m24.73^s / +28°15'24.50"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Seeing not supporting steady view, but suspected elongation and notch at 553x, and at 1067x the image is soft but certainly a pair of stars in haze flashing brighter with averted vision

STF2379, 5 Aql

5^m.9

7^m.0

12.5"

121°

2019

Aql

18^h46^m28.58^s / -00°57'41.90"

5^m.9

11^m.3

21.8"

156°

2017

7^m.0

11^m.3

13.4"

172°

2017

René Merting Drachhausen (Germany)	100mm (20x)	AB: bei 20x und etwas Geduld erkenne ich am Stern in Richtung SO knapp getrennt einen schwächeren Begleiter - bei 32x sind beide Sterne ordentlich getrennt, Komponente B gut eine Magnitude schwächer
Mark McCarthy Fremont (California/USA)	203mm (667x)	AB: Wide triple.
Mark McCarthy Fremont (California/USA)	508mm (205x)	AC: I had strong visual color response, though the disks were somewhat bloated with seeing: A was blue-white, B was yellow-white, and C red-orange. Colors were the same at 100x but the disks smaller. With an 8-inch mask at 205x, the disks were tight and overall everything was fainter. C was less red, more grey, and much fainter, so the color was not so strong and maybe would not be described as orange

TDT1049

11^m.2

11^m.5

1.3"

0°

2016

Lyr

18^h46^m29.75^s / +44°16'01.80"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Faint pair split with seeing at 205x, more definite with 333x. Slight mag difference.

STF2385

8^m.4

10^m.8

5.5"

30°

2017

Her

18^h46^m33.09^s / +16°58'59.50"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White A and can see B first with averted vision and then can hold with direct, 3 delta mag, wide. Not physical per WDS, but this is incorrect! 4% parallax range overlap but only 55 parsecs; 300 AU weighted separation, and 1.08/0.64 stellar mass; and the radial velocity delta (1.07) is less than the escape velocity (3.18), so it is gravitationally bound!

HU1191

8^m.7

9^m.4

0.2"

338°

2016

Lyr

18^h46^m34.62^s / +38°21'04.00"

Mark McCarthy

Fremont (California/USA)

508mm (1067x)

V595 Lyr. Very tough! In unsettled seeing it is an elongation or lopsided at all powers. However at best moments it tightens enough to show a very subtle notch & also different brightness and color, A being light orange-yellow, and ~1 delta mag B a deeper orange. Discovered in 1902 at 0.2, it has only a 14.64 year period, it will make a rapid circuit to the other side by 2026 (though only 0.1"), and "widen" to 0.2" again by 2030. Should be fun to observe!

COU1153

10^m.4

10^m.7

0.4"

116°

2016

Lyr

18^h46^m34.77^s / +34°14'58.00"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Snowman at best moments, slight mag difference. Seems more difficult than a typical 0.4"

HU935

9^m.9

10^m.6

3.1"

153°

2020

Lyr

18^h46^m38.12^s / +32°10'02.90"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Easy pair, ~3", one detla mag, yellow white stars. well split [not physical]

BRT261

10^m.3

11^m.2

4.7"

18°

2015

Lyr

18^h46^m48.48^s / +30°53'55.40"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Quite easy pair, almost one delta mag, wide about 4-5"

STF2410

8^m.6

8^m.8

1.7"

86°

2018

Dra

18^h46^m56.67^s / +59°19'52.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

White, ~1 delta mag, well split ~2"

STF2397

7^m.5

9^m.1

3.9"

269°

2017

Lyr

18^h47^m13.09^s / +31°24'20.20"

Sarah Gebauer Germany	100mm (80x)	haarscharf getrennt, winzig eng beisammen
René Merting Drachhausen (Germany)	100mm (107x)	bei 64x klebt B noch an der A-Komponente - bei 107x können A und B in guten Momenten knapp getrennt erkannt werden - B ist deutlich schwächer
Mark McCarthy Fremont (California/USA)	508mm (533x)	Light orange and blue, pretty pair, two delta mag, wide ~5"

★

COU1154

11^m.1

11^m.0

0.6"

57°

2016

Lyr

18^h47^m38.65^s / +32°47'28.90"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Suspect notch at 553x, 1067x too hazy, but great clean split at 667x, very small, near equal. What a great sight.

POU3551

11^m.0

12^m.2

7.0"

157°

2015

Her

18^h47^m39.21^s / +24°11'33.90"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Wide ivory and blue stars, two delta mag [not physical]

ALI142, EZ Lyr

11^m.4

11^m.6

12.7"

127°

2016

Lyr

18^h47^m40.34^s / +35°59'34.10"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Faint pair, near equal to half a delta mag, light orange and a wide separation ~10".

A255

9^m.2

12^m.9

4.9"

69°

2017

Her

18^h48^m21.20^s / +25°44'15.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Nice pair, yellow and slightly red, wide, B is pretty faint but easily seen

ES2023

8^m.7

12^m.0

6.5"

245°

2020

Lyr

18^h48^m24.10^s / +36°11'41.80"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Bright white A, B is seen with averted vision and then can hold direct, ~7"

TDT1063

11^m.5

0.3"

290°

2012

Lyr

18^h48^m38.18^s / +31°32'09.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Suspected at 553x, with 667x can observe elongation, and with averted vision it flashes definite elongation and at times split. Need to avert vision for the B star to be seen and to split but can hold if seeing steadies.

STF2391

6^m.5

9^m.6

37.7"

332°

2016

Sct

18^h48^m39.49^s / -06°00'15.50"

René Merting Drachhausen (Germany)	10x50	Komponente B ist extrem schwach nordwestlich von A zu erkennen, knapp getrennt - ich vermute, das schafft man mit der Öffnung nur stativgestützt … und mit einem richtig guten Fernglas
René Merting Drachhausen (Germany)	15x56	das Pärchen präsentiert sich schwächer und enger als das unmittelbar östlich stehende Doppelsternpaar H 6 50 (AC) - Komponente B im Norden ist 2 bis 3 Magnituden schwächer als A
René Merting Drachhausen (Germany)	18x70	Komponente B ist gut abgesetzt nordwestlich von A zu erkennen - großer Helligkeitsunterschied
René Merting Drachhausen (Germany)	100mm (20x)	bei 20x ist Komponente B im NW von A unheimlich schwach erkennbar, mindestens 2 Größenklassen Helligkeitsunterschied - gewohnter Farbkontrast aufgrund der unterschiedlichen Helligkeiten

Berthold Fuchs

Wiesbaden (Germany)

130mm

v.easy DS

../projects/double-stars/berthold-fuchs/photographs/STF%202391.jpg

★

HU936

9^m.7

9^m.8

1.8"

101°

2017

Lyr

18^h48^m42.19^s / +34°01'04.80"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Excellent pair, clean and precise split with seeing, near equal blue-white stars, nicely split. Struve should have got this. WDS uncertain, I find no parallax range overlap

STF2400

8^m.1

11^m.1

9.7"

159°

2014

Her

18^h48^m54.88^s / +16°15'24.40"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White and 2 delta mag wide B, in a rich field. Not physical

STF2401

7^m.3

9^m.3

4.1"

38°

2017

Her

18^h48^m57.83^s / +21°10'01.30"

Mark McCarthy Fremont (California/USA)	152mm (175x)	White, 2 delta mag, well separated
Mark McCarthy Fremont (California/USA)	317mm (553x)	Not difficult, reddish A and blue B, ~5", 1 delta mag.

J1208

11^m.5

12^m.1

4.7"

334°

2015

Lyr

18^h49^m14.79^s / +28°34'47.10"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Easy white near equal, wide, about 5". May be another double in filed, which has a brighter A star but much fainter B, around 6" separation

POP44

10^m.6

12^m.3

9.7"

230°

2021

Lyr

18^h49^m33.16^s / +35°11'46.20"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Faint pair, wide, noticeable delta. WDS says physical, but there is -54% parallax overlap, so it is not

H6 50

6^m.2

8^m.2

111.8"

171°

2016

Sct

18^h49^m40.96^s / -05°54'46.20"

René Merting

Drachhausen (Germany)

15x56

Komponente C zeigt sich komfortabel getrennt südlich von A und ist gut 1.5 Magnituden schwächer und wirkt dadurch grauweiß gegenüber der schillernd weißen A-Komponente

STF2402

8^m.9

9^m.3

1.5"

208°

2016

Aql

18^h49^m44.14^s / +10°40'35.40"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Lovely near equal, tight but well split. Forms a perfect triangle with two other stars

HO440, nu 2 Lyr

5^m.2

12^m.7

18.4"

175°

2015

Lyr

18^h49^m52.92^s / +32°33'03.90"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Bright white and very faint, very wide B.

★★

STF2406

7^m.1

11^m.2

4.6"

4°

2018

Lyr

18^h49^m55.77^s / +26°25'30.60"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Bright white, 3-4 delta mag, B is averted vision only and delicate, with seeing. Wow!
Mark McCarthy Fremont (California/USA)	508mm (667x)	White star no split at 8" 333x and 667x, but needed the 20" to see the well separated B star.

HU328, AD Her

9^m.8

11^m.2

4.8"

187°

2018

Her

18^h50^m00.30^s / +20°43'16.50"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

AD Her. 1 delta faint B noticed with averted vision, but can then hold direct. Well separated. WDS uncertain, however there is 27% parallax range overlap, 2,583 AU separation, and 2.54/2.01 stellar mass, so they are likely gravitationally bound

HJ1352

7^m.6

11^m.3

13.5"

251°

2015

Lyr

18^h50^m03.28^s / +29°48'55.00"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

2 delta mag, wide.

★

A256

9^m.0

11^m.2

2.9"

60°

2016

Lyr

18^h50^m03.54^s / +31°48'48.20"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Orange pair, about 2 delta mag, wide 4-5". Nice pair.

★★

beta Lyr, 10 Lyr, Sheliak

STFA39

3^m.6

6^m.7

45.7"

149°

2017

Lyr

18^h50^m04.79^s / +33°21'45.60"

BU293

3^m.6

10^m.1

67.2"

317°

2015

BU293

3^m.6

10^m.6

86.0"

18°

2015

Christopher Hay Seeheim (Germany)	10x42	AB: Stabilised binoculars, handheld. B is well apart from A and distinct. Very pretty!
Robert Zebahl Leipzig (Germany)	70mm (22x)	At 22x and 57x the components A, B, E and F were easily seen. The B component appeared slightly bluish-silver at 22x, but at 57x the color was difficult to tell. All four components form a slightly curved 'Y' with the bright A component in the center.
René Merting Drachhausen (Germany)	76mm (18x)	AB: bei 18x sind die beiden Sterne gut getrennt voneinander zu erkennen EF: beide Komponenten zeigen sich bei 18x sehr schwach
René Merting Drachhausen (Germany)	100mm (32x)	AB: bei 32x sind die Komponenten A und B weit getrennt, B ist deutlich schwächer EF: ebenfalls bei 32x machen zwei gleichhelle Fühlersterne (E und F) nördlich von Komponente A das System interessanter - sie sind noch schwächer als B - Farbe konnte ich bei keinem der vier Sterne erkennen
Sarah Gebauer Germany	100mm (80x)	AB: sehr heller und weit getrennter Doppelstern mit einem gefühlten Farbunterschied, der nördliche Stern wirkt warmweiß, der südliche leicht kühl-bläulich
Robert Zebahl Leipzig (Germany)	102mm (62x)	Components A, B, E and F are easily visible. The two southern stars on the drawing do not belong to the system.
Uwe Pilz Leipzig (Germany)	105mm (139x)	AB: Begleiter ist tiefrot; die Natur des Systems ist unsicher
Uwe Pilz Leipzig (Germany)	105mm (144x)	schon sichtbar bei 26x, aber schwierig. A blauweiß, B orange.
Jörg S. Schlimmer Germany	127mm (108x)	easy to split
Sarah Gebauer Germany	150mm (85x)	AB: weit getrennt, viele helle Feldsterne

★

BU265

7^m.4

9^m.2

1.5"

227°

2018

Aql

18^h50^m14.94^s / +11°31'21.50"

Mark McCarthy Fremont (California/USA)	203mm (667x)	Very tremulous B star appears with seeing, surprisingly difficult for the mag, maybe because so close.
Mark McCarthy Fremont (California/USA)	317mm (553x)	Very faint but resolved B at outer diffraction ring when seeing stills. Yellow A, bluish B.

★

STF2404

6^m.9

7^m.8

3.6"

180°

2020

Aql

18^h50^m45.55^s / +10°58'35.20"

Robert Zebahl Leipzig (Germany)	70mm (44x)	Already at 22x the double star is striking due to its orange color. At 44x split, but rather tight with a clear difference in brightness. At 100x the primary component appears in a bright orange, the secondary component shows a bluish tint.
René Merting Drachhausen (Germany)	76mm (57x)	bei 57x zeigt sich die B-Komponente extrem knapp getrennt südlich von A und ist knapp eine Größenklasse schwächer - A ist weiß, B grauweiß - bei 95x gefällt mir die Trennung besser
Mark McCarthy Fremont (California/USA)	203mm (667x)	Light orange and light blue, pretty.
Frederik Wanink Itterbeck (Germany)	254mm (640x)	beide gelblich
Mark McCarthy Fremont (California/USA)	317mm (553x)	well split, yellow A and yellow-orange B.

★

RST4605

11^m.2

11^m.6

0.9"

141°

1995

Aql

18^h50^m58.96^s / -02°38'02.20"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very, very fine, faint, split, quarter delta mag. Very tough considering proximity to nearly full moon with poor transparency. Nice!

STF2409

8^m.5

9^m.6

0.9"

22°

2015

Her

18^h51^m43.74^s / +13°31'06.90"

Mark McCarthy

Fremont (California/USA)

178mm (333x)

Very nice, 2 delta, very finely split pair, excellent. WDS uncertain, and unfortunately no Gaia data for the B star

COU1012

9^m.6

10^m.9

0.4"

239°

2009

Lyr

18^h51^m49.06^s / +31°05'00.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Split best moments at 667x, suspect elongation 553x. Always elongated but needs seeing to still for split. Noticeable difference in mag, about one delta mag, but the stars are so close together is hard to tell.

STI865

11^m.6

12^m.1

3.7"

179°

2018

Dra

18^h51^m54.46^s / +59°48'56.60"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Faint but well seen, nicely split ~4", nice hard points

STF2408

8^m.5

9^m.4

2.3"

91°

2019

Aql

18^h51^m58.05^s / +10°46'48.90"

René Merting Drachhausen (Germany)	76mm (127x)	bei 95x länglich mit ein wenig Einschnürung - bei 127x gelingt die Trennung, diese ist äußerst knapp und nur mit hoher Konzentration sichtbar
René Merting Drachhausen (Germany)	100mm (142x)	bei 107x berühren sich die beiden Sterne noch - bei 142x ist es immer noch nicht sehr einfach, aber in guten Momenten sehe ich beide Sterne ganz knapp getrennt - B im Osten ist deutlich schwächer
Mark McCarthy Fremont (California/USA)	203mm (667x)	With seeing, 1.5 delta mag well split pair, nice. (not physical)

★

HU199

9^m.1

9^m.5

0.9"

345°

2015

Aql

18^h52^m07.48^s / +11°47'54.30"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Wow! With seeing very tight very faint but split near equal. very cool.

STF2411

6^m.6

9^m.6

13.3"

95°

2019

Her

18^h52^m18.63^s / +14°32'08.00"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x und mit etwas Geduld wird östlich vom Hauptstern ein sehr schwacher Begleiter sichtbar, knapp getrennt - Komponente A gelblich, Komponente B ziert sich
Mark McCarthy Fremont (California/USA)	178mm (205x)	Bright light yellow and 3 delta bluish B, wide. In a rich field. WDS uncertain but the Gaia data looks promising: 9% parallax range overlap, 1,913 AU separation, higher mass 2.74/1.24, and the radial velocity delta is just less than the escape velocity
Mark McCarthy Fremont (California/USA)	317mm (553x)	Pretty orange A with 2 delta mag fainter B, ~7".

COU1311

11^m.7

12^m.4

1.3"

226°

2016

Lyr

18^h52^m18.70^s / +37°13'21.10"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Very faint, B needed foveal coaxing to come out then I could hold it, very tough. Suspected at 205x.

HDS2677

Aa-Ab

8^m.3

12^m.1

1.0"

81°

2018

Lyr

18^h52^m27.43^s / +26°32'05.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Pale yellow star resolved as a point on the first diffraction, very faint, only when seeing tightens

STF2412

9^m.0

1.4"

56°

2016

Her

18^h52^m35.04^s / +14°00'12.20"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Nice! Very fine near equal pair, <2". WDS uncertain, but the Gaia data seems good: 40% parallax range overlap, 491 AU separation, high stellar mass 2.48/2.49, so they are likely gravitationally bound

ES1746

10^m.5

11^m.1

1.8"

114°

2015

Dra

18^h52^m50.17^s / +58°14'48.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Fairly faint, slight mag difference, well split ~2"

TDT1106

10^m.6

10^m.9

0.5"

257°

1991

Aql

18^h52^m50.94^s / +08°10'34.20"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Marginal, maybe a smear but too tentative.

TDT1116

11^m.1

11^m.3

0.6"

330°

1991

Lyr

18^h53^m38.40^s / +40°28'13.10"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Notched elongation only. Seeing not supporting more.

TDT1118

11^m.3

11^m.4

0.6"

161°

1991

Lyr

18^h53^m39.35^s / +30°08'06.30"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Averted vision flashes elongation, but this one is very tough. Without AV I see a tight notched rod, very small, with notable difference in brightness.

★

BU137

8^m.7

9^m.0

1.3"

203°

2020

Lyr

18^h53^m57.56^s / +37°22'49.70"

Frederik Wanink Itterbeck (Germany)	254mm (640x)
Mark McCarthy Fremont (California/USA)	317mm (553x)	Fine near equal light orange, ~2". Rich finder field. In Steph 1 open cluster.
Mark McCarthy Fremont (California/USA)	508mm (667x)	Nice bright white near equal stars, 1.5", in a two plus one system with much fainter farther C. (AC 12th mag 23.6")

★

HU1294

9^m.6

10^m.6

1.6"

119°

2016

Lyr

18^h54^m14.83^s / +32°14'12.70"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Well split, 1.5 delta mag, 2" sep, light orange and blue stars. pretty.

HO90

8^m.7

12^m.7

4.0"

228°

2017

Lyr

18^h54^m27.98^s / +37°18'45.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Light orange star, B shows up only with averted vision, appears out of the haze as a brightening.

★

delta 2 Lyr, 12 Lyr, delta Lyrae Cluster, Stephenson 1

ES2028

4^m.3

11^m.2

86.3"

349°

2014

Lyr

18^h54^m30.29^s / +36°53'55.00"

SMR13

4^m.5

8^m.8

193.1"

210°

2014

SMR13

4^m.5

10^m.3

400.6"

238°

2014

SMR13

4^m.5

8^m.8

369.4"

245°

2014

SMR13

4^m.5

9^m.8

335.9"

261°

2014

SMR13

4^m.5

8^m.7

229.4"

284°

2014

SMR13

4^m.3

12^m.0

279.5"

249°

2014

SMR13

4^m.3

12^m.0

304.2"

236°

2014

ES2028

11^m.2

11^m.6

2.1"

135°

2008

SMR13

8^m.7

12^m.9

26.1"

251°

2015

Jörg S. Schlimmer Germany	305mm (94x)	easy to split
Mark McCarthy Fremont (California/USA)	508mm (205x)	ES2028 (BC): Delta 2 Lyr. ! Very cool. A is bright light orange, and BC are blue pinpoints, ~2" with a slight mag difference. Clearly and cleanly seen.

STTA176

7^m.5

94.3"

112°

2018

Aql

18^h54^m30.59^s / +01°53'51.50"

7^m.5

10^m.8

155.5"

4°

2015

7^m.5

11^m.0

150.2"

358°

2015

10^m.8

11^m.0

82.0"

119°

2015

René Merting

Drachhausen (Germany)

18x70

AB: trotz des riesigen Abstandes zwischen den beiden Sternen sieht dieses Paar richtig schick aus - beide Sterne sind gleich hell und haben kaum Konkurrenz im unmittelbaren Umfeld - wie zwei Augen, die einen beobachten

★

STF2415

7^m.1

8^m.7

2.0"

290°

2015

Her

18^h54^m32.84^s / +20°36'55.10"

Mark McCarthy Fremont (California/USA)	152mm (175x)	! Light yellow-white A and blue B closely split, just a little more than 1 delta mag, very fine
Mark McCarthy Fremont (California/USA)	203mm (333x)	Nice pair, 2 delta mag, well separated.
Mark McCarthy Fremont (California/USA)	203mm (667x)	Two delta mag, ~2". Used the 8" mask to clean up the star images, but the view in the 20" was more colorful, yellow A and bluish B.

L41

9^m.7

10^m.7

1.7"

32°

2000

Lyr

18^h54^m34.41^s / +36°59'48.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

B reveals itself with averted vision, and as its haze fades can hold a tiny point well separated, 3 delta mag.

BRT3335

11^m.9

11^m.7

10.0"

69°

2015

Lyr

18^h54^m35.26^s / +27°54'16.50"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Easy near equal, wide. These are the central stars of an arc of four. [not physical. DAL 5 AC is likely one of these additional stars in the arc, 12.07 26.2".]

COU1932

10^m.3

10^m.4

0.9"

297°

2016

Lyr

18^h54^m51.24^s / +44°36'56.20"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Suspect at 205x, nice clean split with 333x. white stars, slight mag difference

ES2029

10^m.0

11^m.4

5.1"

208°

2020

Lyr

18^h54^m51.46^s / +36°10'49.80"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Easy wide pair, slightly blue-white. B is more blue, since fainter. 2 delta mag. (not physical)

★

HO270

5^m.4

12^m.6

8.4"

300°

2013

Lyr

18^h54^m52.18^s / +41°36'09.80"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

! Bright yellow A and very faint B seen with averted vision then held direct, with another faint star one ninety degrees different PA and three times farter out (this is AC). There is a streak of grainy stars across the field, very rich.

★★

STT525 & SHJ282

STT525

6^m.1

9^m.1

1.8"

130°

2015

Lyr

18^h54^m52.52^s / +33°58'06.90"

SHJ282

6^m.1

7^m.6

45.4"

350°

2018

SHJ282

6^m.1

11^m.0

214.8"

295°

2015

Christopher Hay Seeheim (Germany)	10x42	SHJ282 (AC): Stabilised binoculars, handheld. Wide split, the A component yellowish. Alias South 282. According to Stelledoppie a physical double.
Robert Zebahl Leipzig (Germany)	16x70	SHJ282 (AC): 2020-07-06: Easy, striking with reasonably apparent color contrast: yellowish to slightly orange & bluish.
Christopher Hay Seeheim (Germany)	60mm (15x)	SHJ282 (AC): Wide split. Blue colour of C component much more striking than the orange colour of the A component.
Robert Zebahl Leipzig (Germany)	70mm (22x)	SHJ282 (AC): Fairly bright and wide pair. The double star was conspicuous, especially in regard to its color: A appeared orange, C rather grey-bluish. It could be observed together with Messier 57 and beta & gamma Lyrae. Very nice.
René Merting Drachhausen (Germany)	76mm (18x)	SHJ282 (AC): bei 18x ist das Pärchen schon sehr auffällig - A ist hellgelb mit schönem Kontrast zur nördlich stehenden, gut getrennten B-Komponente - bei 57x präsentiert sich B in einem zarten stahlblau
Uwe Pilz Leipzig (Germany)	105mm (21x)	SHJ282 (AC): Orange und türkis
Uwe Pilz Leipzig (Germany)	105mm (180x)	STT525 (AB): gelbweiß-blau
Christopher Hay Seeheim (Germany)	125mm (23x)	SHJ282 (AC): Widely split, dominates the field of view, very attractive. A component is tangerine orange, C component ice blue. An echo of Albireo. A true physical pair.
Mark McCarthy Fremont (California/USA)	152mm (285x)	STT525 (AB): Suspected at 175x, best seen 285x. Orange A, subtle elongation to notched with best seeing, unequal. Wide SHJ 282 AC also seen. WDS uncertain but there is a -34% parallax overlap, so it's not possible to be
Mark McCarthy Fremont (California/USA)	178mm (205x)	STT525 (AB): Extremely fine point shows just outside bright white A's first diffraction, only with best seeing and when A is a perfect disk. WDS uncertain, however unfortunately there is -34% parallax overlap, it is not physical
Christopher Hay Seeheim (Germany)	180mm (200x)	SHJ282 (AC): A is very distant from C but the two are still a fine pair. Colour of C is more striking than that of A, in a manner similar to my simultaneous observation with 60mm at 15x, but not quite as pronounced. C has a companion set off from it by a hair of black. I estimate PA from C at approx. 80°, separation very roughly 2". Surprisingly can't find this companion in the double star catalogues.
Frederik Wanink Itterbeck (Germany)	254mm (640x)	STT525 (AB): 3er System, sehr schwierig wegen Helligkeitsunterschied
Mark McCarthy Fremont (California/USA)	317mm (277x)	SHJ282 (AC): Wide separation orange and blue, 2 delta mag.

Frederik Wanink Itterbeck (Germany)	254mm	STT525 (AB)
Claus-Dieter Jahn Leipzig (Germany)		SHJ282 (AC): TS APQ 65/420mm, ZWO ASI 178mc, Livestack with Sharpcap, Exposure time: 1600x 0.6s

A258

8^m.9

9^m.9

0.3"

228°

2018

Lyr

18^h54^m59.91^s / +30°52'45.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very tough. I get elongation at 553x, and more clear elongation at 667x, but no split, not even notching, more like an unevenly illuminated rod. Seeing not support higher power.

WFC216

9^m.1

9^m.6

12.0"

89°

2016

Her

18^h55^m04.26^s / +16°44'20.30"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Slightly unequal white stars, framed with two 10th mag stars on either side, equidistant away. WDS uncertain, but they do not share any parallax range overlap

TDT1125

10^m.9

11^m.1

0.4"

326°

2009

Lyr

18^h55^m04.61^s / +36°11'08.70"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

In same field as L 41. Very fine, hairline split only with seeing elongated otherwise.

ES1657

10^m.4

11^m.0

3.7"

355°

2020

Lyr

18^h55^m22.99^s / +40°52'12.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

White A and light red B, ~1 delta mag, wide ~4"

★

COU511

Aa-Ab

9^m.7

9^m.9

0.7"

190°

2016

Her

18^h55^m23.68^s / +23°24'00.10"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

! Wow great pair. A star rather bright with B very close-in, ~1 delta mag, the tiniest pin prick <1" separated from A

STF2419

9^m.1

9^m.4

3.4"

178°

2018

Lyr

18^h55^m28.52^s / +29°13'35.80"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Near equal white, ~5"

COG1

9^m.3

11^m.9

26.2"

284°

2015

Her

18^h55^m43.67^s / +12°54'30.10"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Unremarkable, wide, 1.5 delta magnitude white stars, maybe in a triple as a third star a little farther out forms a triangle (this is AC). Not physical per WDS, and no data on the companion in Gaia. W.A. Cogshall, assistant to T.J.J. See at the Lowell Observatory, but by 1903 he was observing with the 12-inch at the Kirkwood observatory where this discovery was made, following a list made by Burnham of stars suspected to be double by the Albany observers

★

A2193

8^m.8

9^m.2

1.0"

357°

2017

Ser

18^h55^m51.23^s / +03°22'30.80"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Pair of white stars, half delta mag. found very quickly slew to. Nice pair. Very clean split.

★

STF3130 & STT365

STT365

7^m.2

8^m.3

0.2"

359°

2016

Lyr

18^h55^m57.14^s / +44°13'41.90"

STF3130

AB-C

7^m.0

10^m.5

2.6"

257°

2016

STF3130

AB-D

7^m.0

12^m.0

181.2"

310°

2003

Mark McCarthy Fremont (California/USA)	152mm (175x)	STF3130 (AB-C): Very fine, B very much fainter and red color. B appears with seeing, very close (AB is 0.4" and doable with 20-inch)
Mark McCarthy Fremont (California/USA)	317mm (553x)	STF3130 (AB-C): Extremely faint but present direct vision, white A and blue B, 4" 3-4 delta mag. Did not see AB 0.4". Nearby R Lyr which is a pretty orange.
Mark McCarthy Fremont (California/USA)	317mm (553x)	STT365 (AB): Very fine, white and blue stars, ~4", 3 delta mag. Nice!
Mark McCarthy Fremont (California/USA)	508mm (205x)	STF3130 (AB-C): Very nice bright white A and slightly red B well split from A, three delta mag. Did not notice the 0.4" AB pair STT 365

STF2421

8^m.1

9^m.3

24.6"

57°

2015

Lyr

18^h56^m01.68^s / +33°47'08.10"

René Merting Drachhausen (Germany)	76mm (57x)	bei 57x ein eher unauffälliges, ordentlich getrenntes Sternpaar - Komponente B im Nordwesten ist eine Magnitude schwächer
Uwe Pilz Leipzig (Germany)	105mm (88x)	orange und blaugrün
Uwe Pilz Leipzig (Germany)	105mm (137x)	recht weit, einfach

★

STF2417, theta Ser, 63 Ser, Alya

4^m.6

4^m.9

22.4"

106°

2019

Ser

18^h56^m13.18^s / +04°12'12.90"

4^m.6

6^m.8

421.0"

58°

2007

René Merting Drachhausen (Germany)	10x35	AB: wunderschön für diese Vergrößerung - zwei helle dicht beieinander stehende Sterne, knapp getrennt - die hellsten Sterne im Umfeld
René Merting Drachhausen (Germany)	10x50	AB: zwei helle schneeweiße Sterne, knapp getrennt - B im Osten ist nur knapp schwächer - ein schönes enges Pärchen
René Merting Drachhausen (Germany)	16x70	AB: ein gut getrennt zu sehendes Pärchen - beide Sterne stahlen weiß, Komponente B im Osten ist keine halbe Größenklasse schwächer
René Merting Drachhausen (Germany)	100mm (20x)	AB: bei 20x ein auffälliges gut getrenntes Sternpaar - Komponente B östlich ist nur leicht schwächer und strahlt ein wenig warm-weißer
Sarah Gebauer Germany	100mm (73x)	AB: die mit deutlichem Abstand bei 73x getrennten Doppelsterne liegen wie in einem U aus recht gleich hellen Sternen und bilden dabei im Süden den unteren Bereich des Buchstabens
Stefan Loibl Rosenheim (Germany)	102mm (102x)	AB: wide pair, hardly any difference in brightness, wonderful field, double stars looks like an embedded pair of eyes

Berthold Fuchs

Wiesbaden (Germany)

130mm

AB: easy DS

../projects/double-stars/berthold-fuchs/photographs/theta%20Ser.png

TDS955

10^m.5

11^m.1

0.9"

149°

2016

Dra

18^h56^m21.13^s / +58°54'26.10"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Very fine, resolved with seeing, ~1 delta mag ~1", pretty difficult.

HJ1356

8^m.4

9^m.3

29.3"

342°

2015

Lyr

18^h56^m22.13^s / +45°30'25.40"

René Merting

Drachhausen (Germany)

100mm (20x)

bei 32x zeigen sich zwei schwache ordentlich getrennte Sterne - Komponente A im Süden ist dabei doppelt so hell wie B, eine Größenklasse Helligkeitsunterschied

TDT1139

10^m.8

11^m.8

2.9"

242°

2016

Lyr

18^h56^m32.12^s / +26°51'50.30"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Faint pair not quite equal, wide ~4". Seems an elongated haze behind it, as if in front of galaxy , or unresolved stars [Checked DSS, no galaxy behind it, and not particularly dense with stars]

ES2422, OQ Lyr

9^m.0

12^m.0

5.5"

181°

2020

Lyr

18^h56^m51.24^s / +31°12'03.60"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Orange with very faint, very wide, averted vision.

BU648

5^m.3

8^m.0

1.2"

232°

2020

Lyr

18^h57^m01.61^s / +32°54'04.60"

Mark McCarthy Fremont (California/USA)	152mm (285x)	Orange A and a just split, very small, very faint B, seen only with 285x --175x suspected, 456x image quality not good. Short period pair, it will make a half revolution by 2045
Mark McCarthy Fremont (California/USA)	317mm (553x)	277x an orange not quite round disk, suspected a close pair. At 553x it splits with seeing, 0.8", 3 delta mag, in diffraction.

★★

STF2422

7^m.9

8^m.2

0.8"

68°

2018

Her

18^h57^m07.83^s / +26°05'45.10"

Mark McCarthy Fremont (California/USA)	203mm (333x)	Excellent hairline split at 333x with eight inch. Near equal white stars. Picked them out in a crowded field, suspected elongation right away, split with seeing as I centered it in eyepiece, and from then it was a steady split
Frederik Wanink Itterbeck (Germany)	254mm (640x)	schwieriger wegen schwacher Sterne
Mark McCarthy Fremont (California/USA)	317mm (553x)	Very tight, <0.8", equal light orange, pretty faint.

STF2438

7^m.0

7^m.4

0.8"

357°

2019

Dra

18^h57^m28.47^s / +58°13'30.00"

Frederik Wanink Itterbeck (Germany)	254mm (640x)	leicht; beide gleich hell
Mark McCarthy Fremont (California/USA)	508mm (333x)	Hairline split, white stars, near equal. 261.6 year period, look how fast it will move in the years 2150-2160!

A260

9^m.2

9^m.6

0.9"

246°

2020

Lyr

18^h57^m34.07^s / +32°09'20.20"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

At 8", small and faint suspected split at 333x: 8" 667x stars are hazy. At 20" 667x got a clean wide split two hard paints of stars.

HJ5505

9^m.4

9^m.5

14.4"

122°

2019

Aql

18^h57^m42.01^s / +09°42'01.80"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Near equal wide white stars.

★

A587

10^m.6

11^m.5

1.8"

188°

2017

Lyr

18^h57^m55.98^s / +44°07'00.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Excellent 2+1 pair, bright A, BC wide and 1 delta mag, well split ~2"

AG366

8^m.5

8^m.7

1.4"

183°

2019

Lyr

18^h58^m03.46^s / +47°11'30.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Near equal yellow-white easy split

STF2427

9^m.9

10^m.2

7.2"

79°

2017

Lyr

18^h58^m08.22^s / +38°13'47.60"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

AB are near equal and wide, BC is very slightly fainter, well split itself. It appears as a slightly hooking line of three stars. 9 stars in the system. WDS says this is physical due to parallax, and it appears it is: 3% of range overlap but it's only 549 AU separated, stellar mass 0.90/0.85, and the radial velocity delta is less than the escape velocity

ES2670

9^m.4

12^m.4

11.2"

71°

2015

Lyr

18^h58^m13.92^s / +30°10'52.30"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Wide two delta mag

HO91, FF Aql

5^m.4

10^m.1

7.0"

146°

2015

Aql

18^h58^m14.75^s / +17°21'39.40"

Mark McCarthy Fremont (California/USA)	152mm (175x)	FF Aql. Lovely deep orange A with very faint bluish well separated B, just detected and held with direct vision. WDS is uncertain, but there is 8% parallax overlap, 3,508 AU weighted separation, and high stellar mass 6.74/1.75, so may well be gravitationally bound
Mark McCarthy Fremont (California/USA)	508mm (667x)	FF Aql. Yellow light star but no pair seen with mask, but the pair is obvious when I used full 20" aperture, sitting just above the primary, well split, 4 delta mag.

STF2429

8^m.4

10^m.0

5.5"

289°

2017

Lyr

18^h58^m26.49^s / +36°25'33.10"

René Merting Drachhausen (Germany)	76mm (57x)	bei 57x ist B sehr schwach und leicht abgesetzt westlich von A erkennbar - B ist wie ein Geist von A - bei 95x ist B dann besser sichtbar und noch mehr abgesetzt
René Merting Drachhausen (Germany)	100mm (64x)	bei 64x knapp getrennt, der Begleiter west-nordwestlich ist sehr schwach
Mark McCarthy Fremont (California/USA)	508mm (667x)	Wide three delta mag white and very light orange. easy

COU1797

10^m.1

11^m.8

1.3"

175°

2016

Lyr

18^h58^m28.31^s / +42°14'34.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Easy close split, ~1 delta. Nice

TDT1158

10^m.6

10^m.9

8.3"

229°

2018

Lyr

18^h58^m36.54^s / +29°04'07.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Quite faint pair, transparency poor so extinction not helping, but wide and near equal. There is a third star about the same distance ninety degrees from this PA, assume is part of the pair (not physical)

COU817

11^m.3

1.1"

199°

2016

Lyr

18^h58^m42.66^s / +27°45'01.10"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very tight but fairly well split near equal stars, transparency and seeing not cooperating, but can split when seeing allows

STF2431

6^m.2

9^m.6

19.0"

236°

2013

Lyr

18^h58^m46.59^s / +40°40'45.10"

René Merting Drachhausen (Germany)	100mm (20x)	bei 32x zeigt sich ein gut getrenntes sehr ungleiches Paar - Komponente A im NO strahlt creme-weiß, Komponente B dagegen ist nur knapp erkennbar und leicht bräunlich - Helligkeitsunterschied 3-4 Größenklassen - zurück auf 20x ist B auch noch gerade so zu erkennen
Sarah Gebauer Germany	100mm (80x)	sehr stark unterschiedlich hell, deutlich getrennt, die zweite Komponente ist viel schwächer zu sehen
Mark McCarthy Fremont (California/USA)	317mm (553x)	Easy wide yellow-white & bluish pair.

TDT1161

11^m.4

11^m.6

1.5"

1°

2016

Lyr

18^h58^m52.26^s / +42°18'25.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

In same field as COU 1797 and with a similar PA. Faint, near equal, easy split

BU649

8^m.7

11^m.9

1.8"

1°

2016

Lyr

18^h58^m53.75^s / +32°28'32.80"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Not difficult, showed right away on edge of field as an elongated smear which resolved with seeing and in the center of field, used averted vision to bring out B star

AGC9, gam Lyr

3^m.2

12^m.1

13.5"

307°

2015

Lyr

18^h58^m56.62^s / +32°41'22.40"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Sulafat. B star immediately picked out of A's glow like a piece of debris suspended in the explosion, a planet almost hanging in the halo.

HU332

9^m.7

9^m.6

0.5"

267°

2016

Vul

18^h59^m03.72^s / +22°30'03.20"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Beautiful close split, a little more than hairline, light orange stars near equal

STF2424, 11 Aql

5^m.3

9^m.3

20.8"

304°

2019

Aql

18^h59^m05.73^s / +13°37'21.20"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x ist nordwestlich von Komponente A deutlich getrennt ein ganz schwacher Begleiter erkennbar - Komponente A zeigt keinen Farbstich, durch den großen Helligkeitsunterschied wirkt B dumpf, kein echter Farbkontrast, aber immer wieder schön anzusehen
Mark McCarthy Fremont (California/USA)	317mm (277x)	Orange star with very much fainter B, nearly AV only. Very wide separation.
Mark McCarthy Fremont (California/USA)	317mm (553x)	11 Aql. Yellow and very much fainter blue B, wide separation.

TDT1168

9^m.6

11^m.5

1.9"

250°

2016

Dra

18^h59^m17.70^s / +59°28'45.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Nice white and blue pair, easily seen, ~2 delta ~2"

A1387

9^m.1

10^m.0

0.3"

351°

2016

Dra

18^h59^m20.43^s / +54°50'12.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Notched elongation, white stars. Seeing not good enough to split

STF2430

9^m.1

9^m.2

1.5"

187°

2015

Lyr

18^h59^m22.10^s / +29°36'11.20"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Fine near equal ~1.5"
Mark McCarthy Fremont (California/USA)	508mm (667x)	Easy pair, hard white points, near equal mag, well separated

ES1844

9^m.6

10^m.5

2.5"

19°

2020

Dra

18^h59^m30.05^s / +63°47'34.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Faint pair, significant mag difference, B noticed with averted vision before holding direct, well split ~3"

ENG65, 13 Aql

4^m.1

10^m.6

122.0"

184°

2014

Aql

18^h59^m37.39^s / +15°04'06.50"

4^m.1

11^m.2

142.9"

159°

2014

10^m.6

11^m.2

59.8"

102°

2015

Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: Bright star and very wide separated, very much fainter B.
Mark McCarthy Fremont (California/USA)	317mm (553x)	BC: Two very faint stars, about half delta mag, wide separation.

ES1748

9^m.4

10^m.8

6.6"

55°

2018

Dra

18^h59^m44.10^s / +55°43'25.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Easy ~1 delta mag wide pair

STF2428

8^m.2

10^m.3

6.9"

287°

2019

Aql

18^h59^m56.53^s / +14°54'39.90"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

3 delta mag, wide yellow and blue.

STF2426

7^m.5

9^m.0

16.5"

261°

2019

Aql

18^h59^m58.76^s / +12°53'24.10"

9^m.0

13^m.5

4.2"

173°

2015

René Merting Drachhausen (Germany)	76mm (29x)	AB: bei 29x ein ordentlich getrenntes Paar - Komponente A im Osten ist leicht gelblich, B ist gut 1.5 Magnituden schwächer und wirkt dadurch grauweiß
René Merting Drachhausen (Germany)	100mm (32x)	AB: bei 32x ein gut getrenntes Pärchen, wobei die östliche Komponente A gelblich strahlt, Komponente B eher gräulich
Mark McCarthy Fremont (California/USA)	317mm (277x)	AB: Near equal orange, very wide separation.

COU1798

11^m.5

11^m.8

0.7"

347°

2009

Lyr

18^h59^m59.58^s / +41°00'54.00"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Hairline split at best moments, noticeable mag difference.

ES2236

9^m.2

13^m.2

7.4"

178°

2016

Lyr

19^h00^m12.11^s / +34°48'24.70"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

B seen averted vision only, fades to point in its after glow--like an old tube tv turning off. Wide split, big delta mag

HU677

10^m.0

10^m.5

1.7"

42°

2015

Aql

19^h00^m13.11^s / +13°02'51.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very nice equal stars, nicely split about 2". WDS uncertain but chances are it is gravitationally bound: 31% parallax range overlap, 1,318 AU separation, 2.68/2.45 solar mass

ES1326

9^m.3

10^m.4

2.4"

228°

2016

Lyr

19^h00^m21.32^s / +44°59'51.80"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Nicely split pair, noticeable mag difference ~1", white

TDT1178

10^m.5

10^m.8

0.9"

334°

2016

Lyr

19^h00^m29.20^s / +27°16'12.00"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very fine pair, very tight, splits with seeing a little more than half a disk, almost one delta mag

ES1429

9^m.7

11^m.1

6.1"

12°

2019

Lyr

19^h00^m29.30^s / +43°13'14.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Easy wide ~2 delta mag light yellow pair

STF2425

7^m.9

8^m.6

29.5"

177°

2018

Aql

19^h00^m33.93^s / -08°06'31.80"

René Merting Drachhausen (Germany)	10x35	zwei schwache fast gleichhelle Sterne, etwas mehr als knapp voneinander getrennt
René Merting Drachhausen (Germany)	10x50	ein sehr schwaches knapp getrenntes Sternpaar - die hellere Komponente steht im Norden
René Merting Drachhausen (Germany)	18x70	ein einfacher Doppelstern - beide Komponenten sind komfortabel getrennt voneinander zu erkennen, im Sternumfeld wirken sie dennoch schön eng zusammen stehend - die südliche Komponente wirkt kühler, bläulicher und ist maximal eine halbe Größenklasse schwächer
René Merting Drachhausen (Germany)	100mm (20x)	bei 32x fällt neben der gelb strahlenden Komponente A weit getrennt südlich ein weiß-oranger Begleiter auf, Komponente B nur gering schwächer - zurück auf 20x ein schönes eng stehendes Pärchen, auffällig im sonst recht farblosen Umfeld wegen des schönen Farbkontrastes

★

COU1156

11^m.1

11^m.2

0.7"

111°

2016

Lyr

19^h00^m34.25^s / +33°01'24.80"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Near qual small and at best moments a clean split, still, just nice points. great star

HU678

8^m.8

11^m.1

2.9"

359°

2016

Aql

19^h00^m34.37^s / +12°13'34.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Almost 3 delta mag, fairly well split but close pair. WDS says not physical, but they're wrong: 51% parallax overlap, 1,017 AU separation, 2.44/1.47 solar mass

★

HO92

10^m.6

10^m.8

1.3"

40°

2015

Lyr

19^h00^m59.89^s / +32°33'11.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Beautifully well split, had an instant of perfect images. White pair near equal.

J1280

11^m.7

12^m.0

3.9"

108°

2016

Vul

19^h01^m00.47^s / +22°05'34.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Faint pair slight mag difference, wide ~3". Not physical

ALI382

12^m.0

11^m.7

14.7"

78°

2017

Lyr

19^h01^m15.00^s / +36°20'50.10"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Widely separated faint stars, I wonder how thought it was a double: similar mag, proper motion, spectra? (not physical)

HJ1362, 16 Lyr

5^m.0

10^m.6

46.9"

289°

2003

Lyr

19^h01^m26.36^s / +46°56'06.10"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x steht B westlich ganz schwach leicht außerhalb des Halos von A - bei 64x umkreisen insgesamt 5 schwache Sterne die A-Komponente, deshalb wirkt AB nicht wie ein klassisches Doppelsternpaar
Mark McCarthy Fremont (California/USA)	317mm (553x)	16 Lyr. Faint star at edge of direct vision, fairly well separated.

STF2432

6^m.8

10^m.4

14.8"

87°

2016

Aql

19^h01^m48.60^s / +12°32'27.50"

Mark McCarthy Fremont (California/USA)	317mm (553x)	White and 3-4 delta mag B, very wide separation.
Mark McCarthy Fremont (California/USA)	508mm (205x)	3 delta mag, yellow-white A, wide. WDS uncertain but it might be physical: 20% parallax overlap, a little far 6,699 AU separation, but high solar mass 4.36/1.75

★

STF2437

8^m.4

8^m.8

0.6"

1°

2019

Sge

19^h01^m53.16^s / +19°10'11.70"

Mark McCarthy Fremont (California/USA)	178mm (333x)	Light orange, snowman only. Physical with a 804.6-year period
Mark McCarthy Fremont (California/USA)	317mm (553x)	Small faint, notched peanut when seeing stills. Orange.

ES1965

10^m.7

12^m.5

7.5"

246°

2020

Lyr

19^h02^m04.33^s / +36°39'47.30"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Easily picked out, 2 delta mag, wide separated stars, pretty

STF2450

A-BC

6^m.5

9^m.5

5.1"

298°

2017

Dra

19^h02^m07.04^s / +52°15'40.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Bright yellow and fainter yellow orb for B. 2-3 delta mag, ~5".

ES1430

10^m.7

11^m.7

1.6"

110°

2016

Lyr

19^h02^m23.15^s / +42°30'26.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Delicate pair, good with seeing, >0.5 delta mag.

STF2441

7^m.8

9^m.8

6.3"

263°

2019

Lyr

19^h02^m41.26^s / +31°23'58.50"

7^m.8

11^m.2

101.2"

135°

2015

René Merting Drachhausen (Germany)	100mm (64x)	AB: bei 64x zeigt sich Komponente B knapp getrennt westlich von A - Komponente B ist deutlich schwächer
Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: 2 delta mag, ~10"
Mark McCarthy Fremont (California/USA)	508mm (667x)	AB: White and slightly greenish, wide, 2 delta mag. (AC very widely separated)

STF2434

A-BC

8^m.4

8^m.9

27.8"

88°

2019

Aql

19^h02^m44.38^s / -00°42'40.40"

René Merting Drachhausen (Germany)	76mm (18x)	bei 29x einfach, A und BC stehen ordentlich auseinander und haben einen ordentliche Farbkontrast, der aber immer hin und her zu springen scheint - zurück auf 18x ist das Pärchen noch immer gut getrennt zu erkennen - der Doppelstern ist schön anzusehen, er wird im Westen von einer gebogenen Kette aus sechs Sternen flankiert, die sich wie eine Schnecke einkringeln (ein großer Bogen, der immer enger wird)
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x ein auffallendes, schön zusammen stehendes Sternpaar mit einem Farbkontrast, der nicht richtig greifbar ist - B wirkt kühler in der Farbe und ist vielleicht eine viertel Größenklasse schwächer
Robert Zebahl Leipzig (Germany)	120mm (18x)	Easily split with similar brightness.

ES480

10^m.3

11^m.3

2.4"

273°

2015

Lyr

19^h02^m55.78^s / +27°42'26.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Nice pair, wide split, bluish, half delta mag. (I should try again, WAK 3 AC is 11.65 1.1")

★

A589

9^m.5

10^m.1

0.7"

6°

2017

Lyr

19^h03^m01.81^s / +42°32'45.80"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

! Exceedingly fine pair, split with seeing, ~1 delta mag, white A and blue B. In the same field with ES 1430.

A2991

10^m.4

10^m.8

0.7"

82°

2016

Vul

19^h03^m23.53^s / +25°11'19.60"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Suspect elongation with 205x. B has a significant mag difference than A, maybe half delta, very closely separated <1"

ALI613

13^m.3

13^m.6

9.0"

237°

2015

Lyr

19^h03^m36.82^s / +37°24'49.70"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Wide separation, near equal faint stars. Can see it direct vision. Averted vision needed at thirteenth magnitude if close to another star. Not a challenge at all (not physical)

ARG33, BH Dra

8^m.5

9^m.2

10.6"

57°

2018

Dra

19^h03^m39.54^s / +57°27'25.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

BH Dra. White stars, ~1 delta mag, wide

STF2448

8^m.8

2.5"

191°

2019

Lyr

19^h03^m39.66^s / +35°44'34.40"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Near equal white, 3-4"
Mark McCarthy Fremont (California/USA)	508mm (667x)	Easy near equal white, 2"

BRT1949

11^m.1

11^m.4

4.1"

295°

2015

Aql

19^h03^m39.85^s / +17°08'15.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

In same field as STF2442, faint, slight magnitude difference, white, about 4" separation. WDS uncertain, but there is parallax overlap, -46%

STF2442

8^m.5

9^m.8

9.9"

210°

2019

Aql

19^h03^m42.21^s / +16°57'57.80"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x ist A schwach und orange, B südlich ist gut getrennt erkennbar, noch schwächer und farblich nur noch als "dunkel" zu bezeichnen, dadurch aber ein auffälliger Farbkontrast -runter auf 20x kann ich B leider nicht orten - der Doppelstern bildet mit einigen 7-9 mag hellen Sternen nördlich ein markantes Muster wie ein Angelhaken (oder einer Häkelnadel, wenn man bedenkt, wie eng der Bogen südlich geschwungen ist) - STF2442 bildet dabei die Spitze der Rundung des Hakens - sehenswert innerhalb dieses Musters
Mark McCarthy Fremont (California/USA)	508mm (205x)	Light orange A and blue B, wide, 2 delta. WDS says not physical, and that's correct, no parallax range overlap (-96%)

BU1285

7^m.3

12^m.8

11.2"

289°

2018

Lyr

19^h03^m55.60^s / +34°09'04.60"

7^m.3

10^m.7

41.8"

208°

2018

Mark McCarthy Fremont (California/USA)	317mm (553x)	AC: White A and wide faint B.
Mark McCarthy Fremont (California/USA)	508mm (667x)	AB: Thirteenth mag B easily picked out within the very bright A's glow.

STF2443

8^m.9

9^m.3

6.8"

311°

2019

Aql

19^h04^m04.23^s / +14°47'01.90"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Slight magnitude difference white stars, fairly wide. WDS not physical

★

COU1935

10^m.6

11^m.1

1.2"

41°

2016

Lyr

19^h04^m11.37^s / +38°58'47.40"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very fine near equal, well split, 1", white. Verified on chart.

BRD4

9^m.2

9^m.6

2.6"

310°

2018

Lyr

19^h04^m15.19^s / +32°45'16.80"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Near equal white, wide

DA9

7^m.0

10^m.2

2.0"

171°

2016

Lyr

19^h04^m15.72^s / +43°52'49.50"

Mark McCarthy Fremont (California/USA)	152mm (285x)	Suspected with 175x, solid split and resolution of B with 285x. Very faint B condenses with seeing. A is light blue color
Mark McCarthy Fremont (California/USA)	178mm (205x)	I've seen this a few times, always a challenge in different apertures. Very fine white point outside bright white A's diffraction, with seeing. WDS says physical but sadly there is -5% parallax range overlap, not gravitationally bound
Mark McCarthy Fremont (California/USA)	317mm (553x)	Faint but perfect star images showing. 3 delta mag, ~5".
Mark McCarthy Fremont (California/USA)	508mm (205x)	Used apodising mask to clean up A's disk image. B appears as a light blue disk nicely separated, diamond ring to white A. Nice

J1209

11^m.5

12^m.3

4.4"

155°

2017

Lyr

19^h04^m25.08^s / +34°06'19.90"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Easy pair, wide, bluish, two delta mag

STF2445

7^m.2

8^m.6

12.4"

262°

2020

Vul

19^h04^m38.50^s / +23°19'45.50"

7^m.2

8^m.5

143.8"

108°

2015

8^m.6

8^m.5

155.1"

106°

2015

René Merting Drachhausen (Germany)	100mm (20x)	AB: bei 32x Trennung eindeutig - gut 1.5 Magnituden Helligkeitsunterschied, Komponente B wirkt trotzdem erstaunlich weiß-grau im Vergleich zur weißen A-Komponente - bei 20x ist B mit etwas Konzentration auch schon knapp getrennt westlich von A erkennbar
Mark McCarthy Fremont (California/USA)	152mm (175x)	AB: Clean white A and slightly red B, 1 delta mag, wide. A slightly fainter red star is at the edge of the field
Mark McCarthy Fremont (California/USA)	203mm (333x)	AB: Wide separated ~1.5 delta mag.
Mark McCarthy Fremont (California/USA)	508mm (205x)	AB: Lovely wide pair, ~2 delta mag, light yellow A and dull B

ES2237

10^m.3

10^m.6

9.9"

218°

2020

Lyr

19^h04^m40.41^s / +33°34'26.00"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Wide near equal pair, white, easily picked out

TDT1213

10^m.4

11^m.4

2.2"

255°

2016

Lyr

19^h04^m50.67^s / +29°44'15.40"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Picked out at edge of field, a nice two delta mag pair, 2", could be a two plus one system

COH1

10^m.8

11^m.1

9.4"

314°

2021

Lyr

19^h04^m55.99^s / +28°28'27.10"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Wide separation half delta mag, easy pair

★

15 Aql, SHJ286

5^m.5

7^m.0

39.6"

211°

2019

Aql

19^h04^m57.67^s / -04°01'53.10"

Christopher Hay Seeheim (Germany)	7x42	Handheld binoculars in reclining chair. Difficult due to hand tremor and significant delta-mag, but definitely split. In handheld 15x60 binoculars quite clearly split. In handheld stabilised 20x60 binoculars a strong wide pair, primary is golden-yellow.
René Merting Drachhausen (Germany)	8x30	beide Sterne zeigen sich gut getrennt, wobei B im Süden lediglich dunkler wirkt, Farben sind nicht wirklich erkennbar
René Merting Drachhausen (Germany)	10x35	ein wunderschöner Doppelstern - die beiden Mitglieder sind sehr hell - B im Südwesten wirkt kupfern, A eher gelblich - Trennung ordentlich
René Merting Drachhausen (Germany)	10x50	sehr auffälliges dicht zusammen stehendes Sternpaar - Komponente A im Norden ist hellgelb, B grau-orange, schöner Farbkontrast
René Merting Drachhausen (Germany)	12x50	ein ordentlich getrenntes Sternpaar - A im NO ist weißgelb, B wirkt gelborange
René Merting Drachhausen (Germany)	16x70	ein wunderschönes ordentlich getrenntes Sternpaar - Komponente A im NO samtgelb, B dagegen apricot-orange und gut 1.5 Magnituden schwächer als A - zudem ein interessanter Farbvergleich möglich zu dem mit im Gesichtsfeld stehenden V Aql gut 1.7° weiter südlich, der farblich noch eine Schippe drauf legen kann mit einem kräftigen zinnober-orange
Robert Zebahl Leipzig (Germany)	70mm (22x)	Striking, pretty wide, uneven pair. Primary component gleamed in shiny orange, the companion appeared slightly orange.
René Merting Drachhausen (Germany)	76mm (29x)	bei 29x ein weit getrenntes Pärchen, B ist eine Größenklasse schwächer - A ist buttergelb, B wirkt noch etwas dunkelgelblicher
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x weit getrennt, Komponente A hellgelb, B dagegen orangefarben - sehenswert
Sarah Gebauer Germany	150mm (125x)	gut gefunden, beide Sterne stehen in weitem Abstand zueinander
Robert Zebahl Leipzig (Germany)	200mm (37x)	Conditions in the target region: SQM-L 19.9 Easy to split, evident. Both components appeared slightly orange colored.

STF2453

8^m.6

10^m.6

13.4"

85°

2019

Lyr

19^h05^m05.80^s / +40°07'33.10"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White A and pretty wide faint B. Not physical

BU359

8^m.8

9^m.8

4.6"

82°

2020

Vul

19^h05^m09.69^s / +23°25'57.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

In the same field as STF 2445, and is a smaller and flipped analog of it. It's the opposite PA dimmer but with similar mag difference, just smaller scale. Not physical

ALI614

12^m.7

12^m.8

10.1"

90°

2015

Lyr

19^h05^m10.34^s / +38°03'25.90"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Fainter pair of a double-double in field, both about the same wide separation (AG 227 the other pair)

TDS964

9^m.9

11^m.2

1.3"

73°

2016

Lyr

19^h05^m11.00^s / +40°22'20.20"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very nice yellow A and fainter B, 1", 1.5-2 delta mag. Fine pair

BU466

9^m.0

9^m.6

1.9"

164°

2020

Aql

19^h05^m13.65^s / +10°49'41.70"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Very fine white pair, slight magnitude difference, nice close split, very pretty. WDS uncertain, however they likely are gravitational: 16% parallax range overlap (with 0% error), 330 AU weighted separation, 1.62/1.40 solar mass. Discovered with the 6-inch at 1.6"

AG227

10^m.7

11^m.2

7.1"

31°

2015

Lyr

19^h05^m22.05^s / +38°03'20.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

This is the brighter pair of the double-double pair mentioned in last entry (ALI 614). White stars, brilliant, wide separation

BU287, zet Aql

3^m.0

12^m.0

7.4"

46°

2016

Aql

19^h05^m24.61^s / +13°51'49.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Deneb el okab. B quite easily seen as a faint companion to brilliant white A, wide ~7", very large delta mag. Burnham discovered it with the 26-inch at the USNO in 1874 during a short stint there -- at 5.53" so it was tougher and probably needed that aperture to discover

HU940

9^m.2

9^m.8

0.4"

187°

2016

Lyr

19^h05^m30.86^s / +33°52'21.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Hairline at 445x, split with 667x, slightly unequal white stars. Physical with 111.6-year period, it will tighten in the next couple of decades

STF2446

7^m.0

8^m.9

9.5"

153°

2019

Aql

19^h05^m47.70^s / +06°32'49.20"

7^m.0

11^m.2

37.2"

347°

2015

René Merting Drachhausen (Germany)	100mm (32x)	AB: bei 32x ein gut getrenntes Pärchen, Begleiter südöstlich schwach - aufgrund des Helligkeitsunterschiedes Farbunterschied wahrnehmbar, Komponente A strahlt weiß mit einem Stich ins gelbliche, B eher wie ein Kupferkessel in der Nacht von innen - STF2446 ist ein schönes Doppel-Doppel zusammen mit dem 37' nördlich stehenden STF2449, wo die Komponenten einen ähnlichen Abstand haben
Mark McCarthy Fremont (California/USA)	178mm (205x)	AB: Light reddish orange A and blue B, wide, 1 delta magnitude. WDS says physical, and it most certainly is: 80% parallax range overlap, 595 AU weighted separation, good 1.59/1.03 solar mass, and the radial velocity delta, 0.32, is less than the escape velocity, 2.79

TDS965

11^m.0

11^m.4

1.4"

165°

2016

Lyr

19^h05^m57.44^s / +33°54'17.00"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Seeing very briefly hardened and these split to distinct points out of an elongated smear.

STF2463

9^m.1

10^m.8

9.7"

0°

2015

Lyr

19^h06^m01.16^s / +45°48'50.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Light orange-yellow A and light blue B, wide, ~1 delta. Not physical

COU1614

9^m.9

0.5"

117°

2016

Lyr

19^h06^m03.06^s / +35°48'45.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very tough given the conditions, but getting a suspect elongation at 667x and at 1067x I get moments of a notch within the haze, and a definite magnitude difference. Marginal. Transparency and seeing not cooperating.

TDT1223

11^m.3

11^m.7

2.5"

41°

2019

Lyr

19^h06^m04.39^s / +33°35'25.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Easier to see than last pair (TDS 965), wider split, half delta mag

STF2454

8^m.3

9^m.7

1.3"

291°

2016

Lyr

19^h06^m09.37^s / +30°26'18.80"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Fine yellowish pair, ~1.5"
Mark McCarthy Fremont (California/USA)	508mm (667x)	Nice well split 2 delta mag, white A reddish B. (DRD 2 AC is 13.50 mag and 31.3")

EHR16, lambda Aql, 16 Aql

3^m.5

7^m.5

12.5"

30°

2009

Aql

19^h06^m14.95^s / -04°52'56.40"

Robert Zebahl

Leipzig (Germany)

70mm (133x)

2020-07-29: The companion can be seen to some extent as an elongated brightening in the first diffraction ring of the primary component. It still appears intermittently as a fragment of the diffraction ring.

★

STF2449

7^m.2

7^m.7

8.2"

289°

2020

Aql

19^h06^m23.04^s / +07°09'20.10"

Robert Zebahl Leipzig (Germany)	70mm (22x)	At 22x well separable, but quite close together. Some fainter and similarly bright stars in the immediate surrounding. At 57x small difference in brightness. Main component looked white-bluish, companion slightly orange.
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x ein knapp getrenntes Pärchen - B-Komponente westlich nur unwesentlich schwächer - beide Sterne heiraten in weiß - STF2449 ist ein schönes Doppel-Doppel zusammen mit dem 37' südlich stehenden STF2446, wo die Komponenten einen ähnlichen Abstand haben
Mark McCarthy Fremont (California/USA)	178mm (205x)	Pretty pair, wide, white stars, <1 delta magnitude. WDS uncertain, but there is no overlap in their parallax ranges, so for sure not physical

HO97

9^m.9

9^m.8

0.8"

15°

2016

Lyr

19^h06^m25.55^s / +31°44'24.40"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Clean split with seeing, white, half delta mag. Nice.

ZUL1

10^m.5

1.4"

165°

2013

Lyr

19^h06^m34.88^s / +33°55'03.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Discovered in 1984. Elongated smear with 7-inch, with the 20-inch I had nicely split light yellow-orange near equal stars. Very pretty. D.J. Zulevic, of Serbia, who has two discoveries. No data on the B star in Gaia

STF2447

6^m.8

9^m.6

14.1"

343°

2019

Aql

19^h06^m35.11^s / -01°20'46.00"

6^m.8

14^m.0

12.9"

192°

2015

René Merting Drachhausen (Germany)	76mm (29x)	AB: bei 29x ist B nordwestlich von A knapp abgesetzt erkennbar - B ist extrem schwach - bei 57x dann ordentliche Trennung und B ist weiterhin sehr schwach
René Merting Drachhausen (Germany)	100mm (32x)	AB: bei 32x zeigt sich B knapp getrennt nordwestlich von A und ist deutlich schwächer - A präsentiert sich weiß, B ist grauweiß - ein eher unauffälliges Paar

S710

6^m.1

8^m.4

6.4"

0°

2016

Sgr

19^h06^m52.12^s / -16°13'45.40"

René Merting

Drachhausen (Germany)

76mm (57x)

bei 57x zeigt sich B genau nördlich von A wie so eine kleine Bommel - ein sehr ungleiches Paar, ich schätze 3 Größenklassen Helligkeitsunterschied (2.32 mag lt. Stelle Doppie) - A strahlt weiß und B … naja … was bleibt der schwachen Komponente anderes übrig, als grau zu schimmern

WFC217

10^m.2

11^m.1

7.7"

335°

2015

Lyr

19^h06^m52.15^s / +34°10'02.10"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Easy yellow and blue, wide, one delta mag

STF2458

9^m.7

10^m.4

11.3"

227°

2016

Lyr

19^h06^m52.39^s / +27°45'09.40"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Near equal pretty wide.

STF2455

7^m.4

9^m.4

9.9"

26°

2020

Vul

19^h06^m53.00^s / +22°10'21.50"

7^m.4

12^m.3

99.6"

20°

2015

René Merting Drachhausen (Germany)	100mm (32x)	AB: bei 32x noch dicht beieinander, bei 64x gut getrennt - wie STF2455 und der nahe STF2457 (25' südlicher) sich gegenüberstehen und die jeweils schwächere Komponente in Richtung des anderen Doppelsterns vor sich herschiebt, das hat was - als ob die beiden Fußball spielen (die jeweilige Komponente A hat einen Ball vor den Füßen) - zwischen den beiden Doppelsternen steht ein schwacher Stern, vermutlich der verwirrte Schiedsrichter
Mark McCarthy Fremont (California/USA)	317mm (277x)	AB: Yellow and yellow-orange, 1 delta mag, very wide.
Mark McCarthy Fremont (California/USA)	508mm (205x)	AB: Wide ~2 delta mag, light yellow-white A and dull B. Not physical

HEI568, 18 Aql

5^m.4

6^m.4

0.3"

248°

2019

Aql

19^h06^m58.60^s / +11°04'16.70"

Mark McCarthy

Fremont (California/USA)

508mm (410x)

18 Aql. The A star is elongated / smeared but 410x does not resolve, seeing not good enough.

STT369

7^m.8

7^m.9

0.7"

5°

2018

Dra

19^h07^m06.37^s / +72°04'26.60"

Frederik Wanink

Itterbeck (Germany)

254mm (640x)

zeitweilig gut erkennbar

../projects/double-stars/frederik-wanink/sketches/STT369.jpg

★

STF2457

7^m.5

9^m.5

10.2"

201°

2020

Vul

19^h07^m08.02^s / +22°35'03.70"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x gut getrennt, bei 64x schon ein ordentlicher Abstand - wie STF2457 und der nahe STF2455 (25' nördlicher) sich gegenüberstehen und die jeweils schwächere Komponente in Richtung des anderen Doppelsterns vor sich herschiebt, das hat was - als ob die beiden Fußball spielen (die jeweilige Komponente A hat einen Ball vor den Füßen) - zwischen den beiden Doppelsternen steht ein schwacher Stern, vermutlich der verwirrte Schiedsrichter
Christopher Hay Seeheim (Germany)	150mm (96x)	Widely split. Attractive together in 0.8-degree FOV with Struve 2455AB a little less than half a degree south. The secondaries of the two doubles point towards each other, a nice sort of double-double. According to Stelledoppie 2457 is a physical double, while 2455AB is not. In 2457 the brightness of both components is less than those of 2455AB, their separation greater, and their colour contrast (itself hard to define) is greater. In 2455AB focussing on the A-component precisely is hard to achieve, perhaps due to an unresolved field star very close to it?
Mark McCarthy Fremont (California/USA)	152mm (175x)	Very faint B seen with averted vision only, around 2" separation
Mark McCarthy Fremont (California/USA)	203mm (333x)	Pale yellow stars, wide separation, 1.5 delta mag.

A703

9^m.0

9^m.3

0.6"

189°

2016

Lyr

19^h07^m12.17^s / +44°50'30.40"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

B is a very fine small point which resolves within A's diffraction ring with seeing only. A is a light yellow white. Very tough. No Gaia data on the B star

STF2459

9^m.1

10^m.1

13.8"

232°

2020

Lyr

19^h07^m22.01^s / +25°58'23.90"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Easy wide, ~1 delta

★

STF2461, 17 Lyr

5^m.3

9^m.1

3.2"

281°

2017

Lyr

19^h07^m25.58^s / +32°30'06.20"

René Merting Drachhausen (Germany)	100mm (142x)	nichts zu holen für mich bis 142x, vermutlich verhindert der große Helligkeitsunterschied die Trennung
Robert Zebahl Leipzig (Germany)	152mm (129x)	At 129x clearly split. The B component was just visible as pretty faint, tiny star. At 270x much easier visible.
Mark McCarthy Fremont (California/USA)	152mm (175x)	Elongation only up to 380x
Mark McCarthy Fremont (California/USA)	317mm (553x)	17 Lyr. Yellow and red, much fainter B ~3 delta mag.
Mark McCarthy Fremont (California/USA)	508mm (667x)	17 Lyr. Huge delta mag. B is obvious in 20", though A's diffraction was horrible. Used mask to clean it up but the B star momentarily disappeared, though I could eventually pull it back out with seeing and critical focus. 4 delta mag.

STF2469

7^m.9

9^m.1

1.3"

126°

2015

Lyr

19^h07^m47.60^s / +38°55'41.60"

Uwe Pilz Leipzig (Germany)	105mm (130x)	nicht trennbar, Begleiter zu schwach
Mark McCarthy Fremont (California/USA)	152mm (175x)	Faint A and very faint, 2 delta mag B, split with seeing with 175x, a steady and close split with 285x. WDS is uncertain but it very likely is gravitationally bound: 30% parallax overlap, 181 AU weighted average, stellar mass 1.85/1.43
Mark McCarthy Fremont (California/USA)	178mm (205x)	Only get an elongation at this aperture, a bit too close and faint. WDS uncertain, but its chances are good, 30% parallax overlap, 181 AU separation, 1.85/1.43 stellar mass
Mark McCarthy Fremont (California/USA)	317mm (553x)	Split when seeing stills. <1", ~1 delta mag.

A704

10^m.3

10^m.5

1.1"

280°

2020

Lyr

19^h07^m53.09^s / +46°52'06.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very fine split, white near equal, ~1"

STF2466

8^m.6

9^m.0

2.5"

103°

2020

Lyr

19^h07^m53.72^s / +29°48'02.50"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Near equal 3" light orange
Mark McCarthy Fremont (California/USA)	508mm (667x)	Hard white points, well separated, one delta mag., white (surprised it is not physical)

ENG66

6^m.2

10^m.8

132.3"

288°

2007

Sge

19^h07^m57.32^s / +16°51'12.10"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Light yellow A and super-wide B. This pair must have been suggested by proper motion data. WDS says not physical

STF2460

10^m.0

10^m.2

9.5"

198°

2018

Sge

19^h07^m59.39^s / +19°45'19.70"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Faint, wide, about 1 delta mag. Physical

STF2467

10^m.1

10^m.3

10.5"

262°

2015

Lyr

19^h08^m05.79^s / +30°47'34.50"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Near equal pretty wide, yellowish
Mark McCarthy Fremont (California/USA)	508mm (667x)	Wide separated white, near equal, 10x10th mag, 10"

TDT1243

11^m.5

11^m.6

2.1"

232°

2019

Lyr

19^h08^m16.62^s / +36°08'04.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Faint but easily split pair, near equal white

COU420

8^m.7

10^m.8

1.3"

99°

2016

Lyr

19^h08^m17.42^s / +25°55'25.40"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Finely split, <2 delta mag, bluish B.

TDT1245

11^m.7

0.7"

24°

1991

Lyr

19^h08^m21.23^s / +29°04'18.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Marginal very barely split or rather a notched double haze. Very small and faint.

TDT1246

11^m.2

11^m.6

0.7"

97°

1991

Lyr

19^h08^m30.59^s / +47°27'36.40"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Same field as A 704. Very fine B seen and split with seeing as a fine point, ~1 delta mag

★

STF2470

7^m.0

8^m.4

13.8"

267°

2017

Lyr

19^h08^m45.20^s / +34°45'37.10"

Robert Zebahl Leipzig (Germany)	16x70	2020-07-06: Striking with well visible brightness difference. Very nice together with STF2474, which gives a similar view. A double-double for binoculars.
René Merting Drachhausen (Germany)	100mm (20x)	bei 20x knapp getrennt - wunderschönes Synchrontänzer-Doppel-Doppel zusammen mit STF2474 unmittelbar 10' südlich, weil A und B bei beiden Paaren mit gleichen Helligkeiten und Positionswinkel strahlen - A-Komponente von STF2470 knapp schwächer als A-Komponente von STF2470
Robert Zebahl Leipzig (Germany)	102mm (40x)	Striking, especially with STF 2474 in one visual field. The color of the components was not clearly visible. Worthwhile! Sketch see STF 2474.
Sarah Gebauer Germany	150mm (85x)	nach mehreren Anläufen dann gefunden und bei 85x wie ein Doppel-Doppel im Bild, sehr sehenswert, auch der Abstandsunterschied (13,8'' bei STF 2470 und 15,9'' bei STF 2474) ist zu erkennen

TDT1250

11^m.9

12^m.1

1.2"

172°

2016

Lyr

19^h08^m51.33^s / +26°03'04.60"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very finely split, faint blue pair, half delta mag.

★★

STF2474

6^m.8

7^m.9

16.0"

263°

2019

Lyr

19^h09^m04.35^s / +34°35'59.90"

Robert Zebahl Leipzig (Germany)	16x70	2020-07-06: Striking with well visible brightness difference. Very nice together with STF2470, which gives a similar view. A double-double for binoculars.
René Merting Drachhausen (Germany)	100mm (20x)	bei 20x knapp getrennt - wunderschönes Synchrontänzer-Doppel-Doppel zusammen mit STF2470 unmittelbar 10' nördlich, weil A und B bei beiden Paaren mit gleichen Helligkeiten und Positionswinkel strahlen - A-Komponente von STF2474 knapp heller als A-Komponente von STF2470 - bei 64x Komponente A ein wenig gelblich
Robert Zebahl Leipzig (Germany)	102mm (40x)	Pretty conspicuous, easy double star. Especially attractive with the nearby double star STF 2470, as both are very similar in brightness, distance and position angle. The color of both components appeared slightly yellowish-orange.
Sarah Gebauer Germany	150mm (85x)	nach mehreren Anläufen dann gefunden und bei 85x wie ein Doppel-Doppel im Bild, sehr sehenswert, auch der Abstandsunterschied (13,8'' bei STF 2470 und 15,9'' bei STF 2474) ist zu erkennen
Christopher Hay Seeheim (Germany)	150mm (96x)	Widely separated. Component A yellowish, B light ice-blue. A true physical pair in 171 LY distance. Very attractive in field of view together with Struve 2470 about 10 arcseconds north. The components of each of the two Struves have almost the same position angles, similar separations and very similar delta-magnitudes. Struve 2470 is like an echo of 2474 but with no definite colour impression.

STF2464

8^m.5

10^m.1

1.2"

28°

2016

Aql

19^h09^m13.22^s / +11°52'03.70"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Extraordinarily fine pair, nearly two delta magnitude, split very close, B is faint and visible with seeing only. Seen at 205x, better at 333x. WDS uncertain, but there is no overlap in their parallax ranges, -52%, so not physical

HO444

8^m.7

10^m.5

1.3"

67°

2016

Lyr

19^h09^m13.70^s / +26°56'07.30"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Close split <1", significant magnitude difference >1 delta. White stars

TDS972

11^m.1

11^m.3

0.8"

310°

2016

Lyr

19^h09^m37.79^s / +26°40'32.30"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Faint, finely split, slight mag difference

TDT1262

12^m.1

12^m.3

0.7"

92°

1991

Lyr

19^h09^m42.80^s / +27°14'41.10"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Very faint, B is difficult, split and resolved with seeing, helped with foveal coaxing and I can hold it direct after. Noticeable magnitude difference, <1 delta.

COU2279

10^m.3

10^m.6

0.7"

126°

2016

Lyr

19^h10^m01.22^s / +42°24'37.80"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Nice firm split with seeing, white near equal

STF2475

9^m.2

11^m.3

6.8"

321°

2018

Sge

19^h10^m25.71^s / +17°44'09.50"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

B is faint, can just hold direct vision brightens with averted vision, 2 delta mag and wide

A152

10^m.5

10^m.6

2.6"

3°

2018

Lyr

19^h10^m33.10^s / +37°00'51.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Attractive triple, the close pair is around 2" and near equal, C is wide and one delta. All the stars are white. Not physical

STF2471

7^m.5

10^m.6

8.6"

122°

2015

Aql

19^h10^m56.93^s / +08°07'17.60"

Mark McCarthy Fremont (California/USA)	178mm (205x)	White A and very faint wide reddish B, 3 delta mag yet still seen with direct vision, very nice. WDS uncertain, but they most certainly are gravitational: 80% parallax range overlap with 0% error, 812 AU weighted separation, 1.73/0.85 solar mass
Mark McCarthy Fremont (California/USA)	317mm (553x)	Detected B with averted vision. Wide and white, can hold B directly when I know where it is.

STF2481

A-BC

8^m.4

8^m.3

4.9"

18°

2020

Lyr

19^h11^m07.90^s / +38°46'48.40"

René Merting Drachhausen (Germany)	100mm (64x)	bei 32x kann ich zwei gleich helle dicht aneinander stehende Sterne mit Einschnürung erkennen - in guten Momenten berühren sich die Sterne nur leicht - bei 64x dann ein knapp getrenntes Pärchen, die nördliche stehende Komponente mit zartem Gelbstich
Uwe Pilz Leipzig (Germany)	105mm (130x)	gleichhell, einfach
Mark McCarthy Fremont (California/USA)	152mm (175x)	Light orange stars, near equal, well separated. (I need to try this with the 20-inch, BC is 0.2" and only one delta mag.)
Mark McCarthy Fremont (California/USA)	152mm (175x)	Near equal, white, wide. BC is SE 2 and 0.2" 8.31/9.40 63-year period -- a great target for my 20-inch

SE2

8^m.3

9^m.4

0.1"

21°

2010

Lyr

19^h11^m07.99^s / +38°46'52.40"

Mark McCarthy

Fremont (California/USA)

508mm (1334x)

This is a component of STF2481 which I viewed through the 6-inch recently. I see a very slight elongation to B all powers, but no resolution or notching. Physical with a 62.79-year period, it will thankfully widen and be a far easier target (at 0.3") by 2030

AG373

10^m.4

11^m.1

3.0"

328°

2018

Lyr

19^h11^m20.45^s / +27°05'28.70"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Light yellow-white A and deeper yellow B, ~2 delta mag, wide

A151

8^m.6

9^m.6

0.6"

158°

2016

Sge

19^h11^m22.81^s / +21°15'39.20"

Mark McCarthy Fremont (California/USA)	178mm (205x)	Very subtle notched elongation, white stars, seeing not supporting higher powers
Frederik Wanink Itterbeck (Germany)	254mm (640x)	nicht als DS gesehen

OL63

10^m.3

11^m.4

1.8"

57°

2016

Aql

19^h11^m28.50^s / +09°32'53.40"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Very faint B seen with averted vision, more than 1 delta mag, close about 2". C.P. Olivier, founder of the American Meteor Society, and there's even a biography about him. WDS is uncertain, however they likely are gravitationally bound: 52% parallax range overlap, 387 AU weighted separation, 1.43/1.05 solar mass

J1263

12^m.9

14^m.0

8.6"

40°

2015

Lyr

19^h11^m28.70^s / +29°53'10.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

AB is the easy bright light orange star and the very wide blue pair of BC, which are wide and ~1 delta mag. Not physical

STF2480

7^m.7

10^m.2

15.1"

23°

2016

Lyr

19^h11^m45.03^s / +26°14'57.50"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

2 delta mag, very wide yellow-white and blue.

★

STF2486

6^m.5

6^m.7

7.2"

204°

2020

Cyg

19^h12^m05.03^s / +49°51'20.70"

René Merting Drachhausen (Germany)	15x56	eine Ameise mit Nordost-Südwestausdehnung - Einschnürung nur leicht
Robert Zebahl Leipzig (Germany)	16x70	2020-07-03: Fine split, but very tight with equally bright components.
Robert Zebahl Leipzig (Germany)	70mm (22x)	At 22x barely split with a slight difference in brightness. At 44x the primary looked orange. I could not determine the color of the companion.
Mark McCarthy Fremont (California/USA)	317mm (553x)	Near equal yellow pair.

HU941

7^m.5

11^m.0

1.1"

147°

2016

Lyr

19^h12^m14.80^s / +32°15'10.00"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Very much fainter B lies on yellow-orange A' diffraction ring. There is no parallax overlap, -53%, so these are not gravitationally bound

STF2483

8^m.0

9^m.1

10.0"

317°

2020

Lyr

19^h12^m23.60^s / +30°20'51.90"

8^m.0

9^m.7

71.2"

236°

2015

9^m.1

9^m.7

70.4"

228°

2015

René Merting Drachhausen (Germany)	100mm (32x)	AB: bei 20x zeigt sich nordöstlich am Hauptstern eine Andeutung von einer Lichtquelle - bei 32x dann ein fein säuberlich getrenntes Pärchen, wobei B nur unwesentlich schwächer scheint - der Doppelstern bildet mit drei schwächeren Sternen ein längliches Südost-Nordwest verlaufendes Parallelogramm
Robert Zebahl Leipzig (Germany)	152mm (49x)	2020-06-24: At 22x, all three components are well visible and form a prominent, acute-angled triangle with the dim C component at the apex. At 49x color differences become visible: A appears white-yellowish, B slightly bluish and C rather orange.
Mark McCarthy Fremont (California/USA)	508mm (205x)	AB: Easy wide A is greenish yellow-white, and B is ice blue.

WFC218

9^m.8

10^m.2

9.5"

352°

2016

Lyr

19^h12^m29.46^s / +44°47'18.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Nice near equal white

★

BU139 & STTA177, V338 Sge

BU139

7^m.1

8^m.0

0.6"

136°

2017

Sge

19^h12^m34.45^s / +16°50'47.20"

STTA177

7^m.1

8^m.0

98.4"

276°

2017

BU139

7^m.1

11^m.2

28.8"

101°

2015

BU139

8^m.0

11^m.2

138.9"

269°

2015

Mark McCarthy Fremont (California/USA)	80mm (13x)	STTA177 (AC): Near equal wide pair split in finder
Mark McCarthy Fremont (California/USA)	152mm (456x)	BU139 (AB): Very subtle notched unequal elongation at all powers. Physical with a 587-year period, currently coming of apastron, it will continue to tighten. Component of STT 177. Burnham discovered with his 6-inch in at 0.5", about what it is now, an astounding catch
Frederik Wanink Itterbeck (Germany)	254mm (640x)	BU139 (AB): getrennt, schwierig, 0,6"?
Mark McCarthy Fremont (California/USA)	317mm (553x)	STTA177 (AC): Very wide orange-yellow and blue, ~2-3 delta mag.

STF2482

9^m.0

10^m.2

1.8"

341°

2016

Sge

19^h13^m02.20^s / +19°08'20.60"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

B is very faint and flashes with averted vision, and I can barely hold it direct, very closely split. WDS uncertain

HO573

9^m.8

10^m.2

7.7"

127°

2020

Sge

19^h13^m17.36^s / +19°33'47.70"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Fairly wide, white A and faint B which brightens with averted vision. WDS uncertain

SHJ289

8^m.0

8^m.7

39.2"

56°

2015

Lyr

19^h13^m29.33^s / +39°02'15.90"

Uwe Pilz

Leipzig (Germany)

105mm (130x)

einfach

STF2487, eta Lyr, 20 Lyr, Aladfar

4^m.4

8^m.6

28.4"

81°

2017

Lyr

19^h13^m45.49^s / +39°08'45.50"

4^m.4

11^m.4

161.5"

151°

2014

René Merting

Drachhausen (Germany)

100mm (20x)

AB: bei 64x ein weit getrenntes Pärchen, Komponente B ist deutlich schwächer - zurück bis auf 20x, auch da ist B knapp getrennt östlich vom Hauptstern erkennbar - der starke Glow von A reicht nicht aus, um B zu überstrahlen - die Annäherung an diesen Doppelstern ist besser von höheren Vergrößerungen kommend

STF2485

8^m.5

11^m.4

8.5"

320°

2016

Vul

19^h14^m12.81^s / +23°08'21.70"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White A, B seen with averted vision only, well separated. WDS uncertain, but there is 75% parallax range overlap, 1,872 AU weighted separation, and 2.07/1.07 solar mass -- likely to be gravitationally bound

STF2484

7^m.9

9^m.5

2.1"

242°

2017

Sge

19^h14^m15.66^s / +19°03'50.30"

René Merting Drachhausen (Germany)	100mm (142x)	bis 142x probiert, keine Chance, Komponente B zeigt sich nicht
Mark McCarthy Fremont (California/USA)	178mm (205x)	Cream white A and yellow B, 2" separation, 2 delta mag, very pretty. Physical with a 1500-year period
Mark McCarthy Fremont (California/USA)	317mm (553x)	Very close, ~2", orange, 1.5 delta mag.

A98

6^m.7

11^m.0

22.5"

128°

2015

Aql

19^h14^m15.99^s / -08°43'08.50"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Very faint but direct vision B is a point. Very wide.

BU975

9^m.7

9^m.8

1.0"

261°

2016

Lyr

19^h14^m29.16^s / +34°33'51.00"

Mark McCarthy

Fremont (California/USA)

152mm (175x)

Fine split, near equal white. No data on the B star in Gaia. Components of STF 2351

★★

STF2496

6^m.5

10^m.0

2.1"

81°

2016

Cyg

19^h15^m19.18^s / +50°04'16.00"

6^m.5

11^m.2

186.1"

242°

2003

Robert Zebahl Leipzig (Germany)	152mm (270x)	AB: In steadier moments, the much fainter companion can be seen near the first diffraction ring of the primary component.
Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: Very much fainter B, a pin prick when seeing stills. 3 delta mag, ~2"

STTA178

5^m.7

7^m.6

89.6"

267°

2018

Aql

19^h15^m20.09^s / +15°05'01.20"

Mark McCarthy Fremont (California/USA)	152mm (175x)	Subtle light orange A and stronger blue B, 2 delta mag, super wide. Finder split. WDS uncertain. There is 33% parallax overlap, and a pretty far 16,757 AU weighted separation, but stellar mass are on the high end, 3.89/2.27, so it might be gravitational
Mark McCarthy Fremont (California/USA)	203mm (333x)	Wide finder split, yellowish A, ~1 delta mag.

BRT1923

10^m.2

10^m.3

3.8"

187°

2015

Lyr

19^h15^m21.46^s / +43°21'31.80"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Near equal white, ~4". Not physical

STF2488

9^m.1

10^m.0

1.8"

352°

2016

Sge

19^h15^m28.07^s / +20°01'53.20"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Faint pair, quite closely separated, 1 delta mag, very nice

BLL37

6^m.7

12^m.4

139.4"

165°

2015

Sge

19^h15^m33.36^s / +18°30'58.90"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Light orange and faint super-wide B. Not physical

★

STT371

7^m.0

7^m.5

0.9"

161°

2018

Lyr

19^h15^m56.96^s / +27°27'21.40"

AB-C

7^m.0

9^m.8

47.2"

269°

2019

René Merting Drachhausen (Germany)	100mm (20x)	AB-C: bei 20x ist Komponente C im Westen schwach erkennbar in einem ordentlichen Abstand zu Komponente AB
Robert Zebahl Leipzig (Germany)	102mm (160x)	2021-08-20: At 28x the much fainter C component is clearly visible at quite a large separation. The tight pair AB showed up at 160x and 187x clearly elongated, partially as an '8'. A small difference in brightness could be guessed. Higher magnifications did not yield any gain. The air was only moderately steady (seeing 3/5).
Mark McCarthy Fremont (California/USA)	152mm (104x)	AB-C: Nice close 2 delta white stars. Not physical. Power too low to notice AB is 0.9" 7.05/7.55 and physical
Mark McCarthy Fremont (California/USA)	203mm (333x)	AB: Bright pair showed best masked down to 8-inches. Near equal, white stars, perfect!
Frederik Wanink Itterbeck (Germany)	254mm (640x)	AB: getrennt

★

STT368

7^m.5

8^m.5

1.1"

219°

2017

Aql

19^h16^m01.84^s / +16°09'39.50"

Mark McCarthy Fremont (California/USA)	178mm (205x)	Very nice, very close split, 1 delta mag, excellent pair. WDS uncertain, but very probably gravitational: 4% parallax range overlap with 2% error, 221 AU weighted separation, 2.43/1.91 solar mass, pretty high given the low AU separation
Mark McCarthy Fremont (California/USA)	203mm (333x)	Very fine 1 delta mag, ~1" split, white.
Mark McCarthy Fremont (California/USA)	317mm (553x)	Definite split, 1/2 an airy disk width, near equal brightness.

STF2491

8^m.6

9^m.7

1.4"

230°

2016

Lyr

19^h16^m11.63^s / +28°16'50.20"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

A is white, B is slightly bluish, ~1.5 delta mag, ~1"

KU57

9^m.7

10^m.4

10.2"

230°

2018

Aql

19^h16^m14.48^s / +15°33'31.40"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

1 delta mag, wide, light orange. WDS says physical, and it is so: 22% parallax overlap, 783 AU weighted separation, 0.99/0.76 solar mass, and the radial velocity delta is less than the escape velocity

STF2489

5^m.7

9^m.3

8.3"

347°

2013

Aql

19^h16^m26.78^s / +14°32'40.60"

René Merting Drachhausen (Germany)	100mm (64x)	bei 64x ist Komponente B gut getrennt nördlich von A zu erkennen - der Helligkeitsunterschied zu ist A enorm, bestimmt mehr als 3 Größenklassen, deshalb wirkt B nicht wie ein Lichtpunkt, sondern eher wie ein bräunlicher kleiner Fleck
Mark McCarthy Fremont (California/USA)	152mm (175x)	Light yellow A and 2 delta mag yellow-orange B, wide. WDS says physical, but there is no parallax overlap -60%, it is not
Mark McCarthy Fremont (California/USA)	178mm (205x)	White A and 3 delta B, fairly wide. WDS says physical, but there is no overlap in their parallax ranges (-60%), so they are not
Mark McCarthy Fremont (California/USA)	317mm (553x)	Bright white and considerably fainter B. B rose up to view with averted vision, but was able to hold direct. ~5"

BU140

6^m.9

11^m.7

49.0"

307°

2015

Aql

19^h16^m52.12^s / -10°58'18.50"

10^m.4

10^m.6

7.9"

213°

2018

Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: Two faint stars in about the same PA. 3 delta mag. to the A star, AB is the closer pair
Mark McCarthy Fremont (California/USA)	317mm (553x)	BC: Two faint stars in about the same PA. 3 delta mag. to the A star, BC is the two fainter stars as a binary

CSN12

4^m.7

5^m.8

9.1"

285°

2000

Aql

19^h16^m55.23^s / +05°10'07.10"

Robert Zebahl

Leipzig (Germany)

70mm (22x)

2019-07-03: Absolutely no star with the given magnitude visible at this position. An error in the WDS or is this a variable one?

STT370, V342 Aql

8^m.3

8^m.7

19.5"

14°

2015

Aql

19^h17^m03.16^s / +09°20'19.60"

René Merting Drachhausen (Germany)	76mm (29x)	bei 29x ein schön isoliert stehendes Sternpaar - Komponente B im Norden ist eine viertel Größenklasse schwächer - ein schwacher Farbkontrast ist erkennbar, ich kann die Farben aber nicht festmachen
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x ist Komponente B nordöstlich nur unwesentlich schwächer - schönes Farbenspiel, Komponente A mit einem Stich ins kupferfarbene, Komponente B dagegen blass-orange

A267

10^m.0

10^m.4

0.4"

181°

2007

Lyr

19^h17^m31.08^s / +26°37'33.70"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

White stars hairline split, ~1 delta mag. Notched elongation at 533x.

S715

7^m.1

7^m.9

8.4"

17°

2018

Sgr

19^h17^m39.96^s / -15°58'01.70"

René Merting

Drachhausen (Germany)

76mm (29x)

bei 29x auffällig, ein schönes enges, knapp getrenntes Paar - B im NW ist eine halbe Größenklasse schwächer -ein schönes Doppel-Doppel zusammen mit dem nur 6' östlich stehenden S 716

A1176

9^m.9

10^m.8

1.3"

105°

2017

Aql

19^h17^m40.90^s / +10°14'58.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Nearly 1 delta mag very closely separated, about 1", white stars. WDS is uncertain, but there is no parallax range overlap, -69%, so the are not physical

★

BU248, 2 Vul

5^m.4

8^m.8

1.8"

128°

2015

Vul

19^h17^m43.64^s / +23°01'32.00"

Mark McCarthy Fremont (California/USA)	152mm (245x)	2 Vul. Nice! B seen just outside bright A's diffraction as a very small fine point, 3 delta mag. WDS is uncertain, but there's a good chance they are gravitationally bound: 24% parallax range overlap, 985 AU separation, 6.47/2.98 mass
Mark McCarthy Fremont (California/USA)	203mm (205x)	2 Vul. White A and light blue B, split outside first diffraction ~1.5" really pretty. Burnham discovered in 1876 with his 6-inch at 1.86", "a fine pair with a moderate aperture"

S716

8^m.4

8^m.6

5.0"

196°

2018

Sgr

19^h18^m05.55^s / -15°57'13.40"

René Merting

Drachhausen (Germany)

76mm (57x)

bei 29x sind beide Komponenten zu erkennen, können aber noch nicht getrennt werden - bei 57x dann gelingt die Trennung - ein deutlich schwächeres Par als das unmittelbar westlich stehende Sternpaar S 715, beide zusammen bilden aber ein schönes Doppel-Doppel - sie tanzen sogar synchron, wenn auch der Positionswinkel um 180° gedreht ist

HJ881

7^m.8

9^m.8

32.0"

340°

2015

Aql

19^h18^m07.10^s / -05°25'24.50"

9^m.8

10^m.5

7.4"

307°

2015

René Merting Drachhausen (Germany)	18x70	AB: Komponente B wird mit etwas Geduld ganz schwach nordwestlich von A sichtbar - Helligkeitsunterschied 2 Größenklassen - Trennung ordentlich
René Merting Drachhausen (Germany)	100mm (32x)	AB: bei 32x ist die Komponente B gut abgesetzt im Norden von A erkennbar - sehr unauffällig - auf Komponente C gut 7" weiter nordwestlich von B habe ich leider nicht geachtet

COU322

10^m.4

10^m.5

0.5"

25°

2008

Vul

19^h18^m11.69^s / +22°31'06.40"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Near equal white stars, nice, split more than hairline, slight delta mag.

BU1256

9^m.4

10^m.0

1.7"

44°

2017

Aql

19^h18^m28.52^s / +06°20'04.30"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Unequal yellow-white stars, about 2". Discovered with the Lick 36-inch. NGC 6781 is 12' north. WDS is uncertain, but there is no parallax range overlap, -10%

STF2492, 23 Aql

5^m.3

8^m.3

3.3"

2°

2016

Aql

19^h18^m32.49^s / +01°05'06.30"

5^m.3

13^m.5

10.1"

70°

1999

René Merting Drachhausen (Germany)	100mm (142x)	AB: bei 107x klebt B noch an A und schimmert im Beugungsscheibchen von A - bei 142x ist B in guten Momenten ganz knapp getrennt erkennbar und kämpft gegen das erste Beugungsscheibchen von A an - Helligkeitsunterschied geschätzt 3 Größenklassen
Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: 23 Aql. well split, a large difference in magnitudes. A bright orange, B bluish.
Mark McCarthy Fremont (California/USA)	317mm (553x)	AC: Faint star much further out was the AC, 13th mag ~10".
Mark McCarthy Fremont (California/USA)	508mm (205x)	AB: Bright yellow A and blue-green B, around 3" separation and 4 delta mag. AC seen too about 3 times the distance and almost a right angle difference. WDS says physical, and it's probably true: 54% parallax range overlap, 417 AU weighted separation, high 3.62/1.49 solar mass

STF2499

8^m.8

9^m.1

2.7"

325°

2020

Vul

19^h18^m33.52^s / +21°56'51.60"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

White stars, near equal, wide

HO575

8^m.0

11^m.7

5.8"

10°

2015

Aql

19^h18^m47.20^s / -05°46'20.90"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Best star images using 20" and 333x of 6" separated pair with 4 detla mag. I also tried a variety of combinations for this one: 8" 205x, Light orange star, no double seen. 8" 410x: no double seen. 8" 667x: Still none -- A is steady & round. 20" 667x: Light orange A messy by airy disk is there, the B star reveals itself, 6" and a hazy blue color. 20" 410x: Disks are smaller, B more clearly resolved. 20" 333x: Best star images. Observation made during poor transparency

AG432, U Sge

6^m.5

9^m.7

92.8"

318°

2015

Sge

19^h18^m48.41^s / +19°36'37.70"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White and super wide B. WDS uncertain

STFA40, 24 Aql

6^m.5

6^m.8

423.5"

316°

2015

Aql

19^h18^m50.94^s / +00°20'20.40"

6^m.5

13^m.2

49.5"

163°

2015

6^m.8

11^m.6

60.4"

298°

2015

René Merting Drachhausen (Germany)	18x70	AB: 24 Aql ist eigentlich eine FG-Empfehlung … nein, nicht wirklich schön - der Abstand zwischen den beiden Sternen ist soooo groß, die machen keinen Eindruck auf mich als Sternpaar - B im Nordwesten ist knapp schwächer - einen Farbunterschied kann ich nicht erkennen
René Merting Drachhausen (Germany)	100mm (20x)	AB: eine Empfehlung aus dem Buch von Sissi Haas - ich kann diesem Paar nicht wirklich etwas abgewinnen, der Abstand ist einfach zu groß - es gibt noch einige ähnlich helle Sterne im Umfeld - B im NW ist unmerklich schwächer - A samtgelb, B weiß, dadurch leichter Farbkontrast

A1646

9^m.8

10^m.6

4.5"

205°

2018

Aql

19^h19^m11.80^s / +15°39'45.30"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Rich field. Slightly unequal stars, fairly wide, yellow-white. WDS is uncertain, but they are likely gravitational: 28% parallax overlap, 2,090 AU weighted separation, substantial 2.25/1.90 solar mass

ES1562

9^m.4

9^m.8

6.3"

325°

2020

Lyr

19^h19^m16.98^s / +42°17'02.30"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Easy wide ~6", ~1 delta

STF2500

A-BC

8^m.2

10^m.7

20.0"

23°

2015

Sge

19^h19^m26.19^s / +19°43'06.10"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White A and very faint wide B, not physical. Not seen, BC is COU 421, 0.4" 11.50/11.50

S717, 28 Aql

5^m.5

9^m.0

60.7"

175°

2015

Aql

19^h19^m39.34^s / +12°22'28.80"

5^m.5

13^m.3

73.6"

107°

2015

9^m.0

13^m.3

75.9"

59°

2015

René Merting Drachhausen (Germany)	12x50	AB: die B-Komponente ist schwach schimmernd weit abgesetzt im Süden von A erkennbar - mindestens 3 Größenklassen Helligkeitsunterschied - Komponente A ist reinweiß, bei B bin ich froh, den Stern erkennen zu können
René Merting Drachhausen (Germany)	76mm (29x)	AB: bei 29x ein komfortabelst getrenntes Pärchen - Komponente B im Süden ist mindestens 2 Magnituden schwächer - B wirkt grau, A strahlt weiß - zurück auf 18x weiterhin komfortable Trennung, wobei B nur noch knapp erkennbar ist

★

STF2505

8^m.3

9^m.5

10.9"

315°

2015

Lyr

19^h19^m52.83^s / +35°32'16.60"

8^m.3

13^m.3

20.8"

224°

2015

René Merting Drachhausen (Germany)	100mm (32x)	AB: bei 32x gut getrenntes Pärchen - Komponente B ist nur leicht schwächer als A - Komponente A ist nicht ganz weiß, mehr wie ein zarter Stich ins gelbliche
Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: Orange and blue, looks like Alberio, but fainter. Wide separation.

STF2497

7^m.7

8^m.5

29.3"

356°

2019

Aql

19^h20^m01.09^s / +05°35'15.70"

René Merting Drachhausen (Germany)	10x50	ein wenig Geduld war notwendig, aber dann zeigte sich Komponente B leicht abgesetzt nördlich von A - geringer Helligkeitsunterschied
René Merting Drachhausen (Germany)	18x70	bei 18x ein ausgesprochen schickes Sternpaar - B zeigt sich nördlich von A gut getrennt, aber trotzdem noch eng seinem Partner stehend - Helligkeitsunterschied eine Dreiviertel Größenklasse - sonst gibt es kaum vergleichbare Sterne im Umfeld, so dass sich das Sternpaar schön prominent präsentieren kann
René Merting Drachhausen (Germany)	100mm (20x)	bei 32x einfach trennbar, auffällig - das Sternpaar steht schön isoliert - B im Norden ist eine dreiviertel Größenklasse schwächer und grau, A dagegen ist strahlend weiß - zurück auf 20x ist der Doppelstern auch noch gut getrennt mit eingängigerem Farbkontrast
Sarah Gebauer Germany	100mm (45x)	auf der Suche nach dem PN NGC 6781 zufällig entdeckt, steht recht isoliert im 1,8° großen Gf. und ist bei 45x sehr deutlich getrennt, zwei feine Pünktchen beieinander

STF2494

7^m.0

10^m.4

25.7"

89°

2006

Aql

19^h20^m02.80^s / -06°37'40.80"

René Merting

Drachhausen (Germany)

100mm (32x)

bei 32x steht B gut abgesetzt östlich von der Hauptkomponente - B ist sehr schwach, bestimmt 3 Magnituden Helligkeitsunterschied

STTA181

7^m.4

7^m.5

62.7"

0°

2018

Lyr

19^h20^m07.47^s / +26°38'41.60"

7^m.4

12^m.8

31.6"

170°

2018

7^m.5

12^m.1

94.0"

43°

2018

Robert Zebahl

Leipzig (Germany)

152mm (22x)

AB: 2020-06-24: Widely separated, small difference in brightness and beautiful color contrast: subtle orange and white-bluish.

ES2489, U Lyr

10^m.2

13^m.0

10.4"

190°

2015

Lyr

19^h20^m09.15^s / +37°52'36.90"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Faint A and very faint B, wide pair. Needed averted to detect, then could hold direct vision.

STF2498

8^m.3

8^m.9

12.1"

65°

2015

Aql

19^h20^m10.32^s / +04°02'47.30"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Slightly unequal yellow stars, wide. WDS says physical, but there is no overlap in their parallax range, -24%, so they are not

★

COU1023

9^m.5

0.3"

146°

2007

Lyr

19^h20^m23.74^s / +26°30'58.80"

Mark McCarthy

Fremont (California/USA)

508mm (1067x)

Hairline split, very definite and consistent, near equal

STF2511

7^m.5

11^m.1

7.2"

53°

2015

Cyg

19^h20^m31.45^s / +50°20'24.50"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Orange and very much fainter star could be B, wide separation, 3 delta mag, ~10"

STF2504 & WAL111

STF2504

7^m.0

9^m.0

8.7"

282°

2016

Sge

19^h20^m59.85^s / +19°08'43.40"

WAL111

7^m.0

12^m.2

91.8"

101°

2015

Mark McCarthy Fremont (California/USA)	152mm (175x)	STF2504 (AB): Light yellow A and light blue B, wide 2 delta mag. WDS uncertain, but there is a good chance they are gravitationally bound: 13% parallax range overlap, 542 AU separation, and stellar mass of 1.57/0.97
Mark McCarthy Fremont (California/USA)	203mm (205x)	STF2504 (AB): Yellow and slight orange, 1.5 delta mag, well separated.
Mark McCarthy Fremont (California/USA)	317mm (277x)	STF2504 (AB): Yellow and slightly red, 2 delta mag, 10". Third star opposite PA, 2x the separation. (AB the first, second is AC, WAL 111)
Mark McCarthy Fremont (California/USA)	317mm (277x)	WAL111 (AC): Yellow and slightly red, 2 delta mag, 10". Third star opposite PA, 2x the separation. (AB the first, second is AC, WAL 111)

Berthold Fuchs

Wiesbaden (Germany)

130mm

STF2504 (AB): easy DS

../projects/double-stars/berthold-fuchs/photographs/STF%202504.png

BU1129

7^m.7

7^m.8

0.3"

344°

2016

Cyg

19^h21^m36.09^s / +52°22'34.90"

Mark McCarthy

Fremont (California/USA)

508mm (889x)

Light orange stars, obviously not single at 445x, and the disks separated as I powered up. Less than 1 delta mag, the best view with 889x, which showed a constant hairline split even with wavering seeing, PA NNW. A really nice pair. Spectral class A8III (white). 121.7-year period, currently 0.328" separated, it is approaching apastron now and will hang there until the 2050s. Burnham discovered in 1889 on the Lick 36-inch at 0.3" and noted "If [the proper motion in Ast. Gess. Catalogue]...is substantially correct, this is a physical system."

ES483, Z Vul

7^m.3

12^m.0

13.8"

3°

2015

Vul

19^h21^m39.11^s / +25°34'29.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Z Vul. Pale yellow A with slightly red color wide faint companion. Not physical

BU141

7^m.6

9^m.2

0.9"

84°

2015

Vul

19^h21^m57.26^s / +22°30'23.20"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Very finely split, ~2 delta mag, pale white A and light blue B. Burnham discovered in 1875 with his 6-inch

STF2501

7^m.8

9^m.7

20.0"

21°

2015

Aql

19^h22^m03.68^s / -04°44'20.00"

René Merting Drachhausen (Germany)	18x70	puh, da habe ich lange gebraucht, bis ich B entdeckt habe - ich habe immer gedacht, das ist eine Unschärfe von A - B steht extrem knapp getrennt nördlich von A und ist deutlich schwächer
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x gut getrenntes Pärchen, Komponente A nördlich strahlt weiß, B nördlich strahlt … schwächer

HO105

8^m.9

9^m.9

2.8"

189°

2020

Sge

19^h22^m12.87^s / +16°39'45.00"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Excellent pair at this aperture, close split and 3 delta mag, just steady and bright enough to see despite haze and full moon

STF2510

A-BC

8^m.6

8^m.7

9.0"

181°

2018

Aql

19^h23^m17.81^s / +09°30'41.70"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Wide near equal white stars. BC is A 1179, 9.11/10.02, 0.3", and I didn't know it was there to look for, will need to go back. WDS says physical, but there is no parallax data for the B star

★

TDT1416

10^m.5

11^m.1

0.7"

298°

1991

Vul

19^h23^m28.49^s / +22°34'19.70"

Mark McCarthy

Fremont (California/USA)

508mm (533x)

Exceptionally fine, split with seeing, very faint ~1 delta mag. B resolves at first diffraction, light orange stars

J2964

10^m.2

10^m.5

1.2"

293°

2016

Aql

19^h23^m56.47^s / +15°06'44.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very fine near equal white stars, nicely split about 1". WDS uncertain, but they are likely gravitational: 76% parallax range overlap, only 280 AU weighted separation, and hefty 1.44/1.35 solar mass

2 Sge

HDS2753

Aa-Ab

6^m.3

10^m.3

0.4"

139°

2011

Sge

19^h24^m22.08^s / +16°56'15.90"

STFA41

6^m.3

6^m.9

342.3"

78°

2016

René Merting Drachhausen (Germany)	12x50	AB: ein extrem weites Pärchen - B im Osten wirkt leicht gelblich, A ist reinweiß - Größenklassenunterschied maximal eine halbe Größenklasse - beide Sterne sind die hellsten im Sternumfeld, aber der weite Abstand vermindert den Doppelsterneindruck
Mark McCarthy Fremont (California/USA)	508mm (1067x)	Aa-Ab: Component of STFA 41. Snowman at all powers through 1067x, but it should really separate if 0.4" as WDS says. Seeing is not up to the task, or the delta mag is too large

STF2515

8^m.4

10^m.3

6.2"

141°

2015

Vul

19^h24^m33.33^s / +21°30'57.30"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Blue-white A and ~2 delta light orange B, wide. Not physical

HO448

8^m.5

10^m.7

7.7"

0°

2015

Vul

19^h24^m44.82^s / +23°36'56.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Light yellow stars, ~3 delta mag, wide

WSI22

10^m.3

10^m.5

15.1"

272°

2020

Vul

19^h24^m53.90^s / +21°26'29.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Near equal, wide. Not physical

HU339

9^m.4

9^m.5

0.9"

246°

2016

Sge

19^h25^m03.35^s / +18°38'59.50"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Detected elongation 8" 333x, but needed 667x to get better a sighting, and 20" to get a wide open split even with indifferent seeing. White stars, about half delta mag. Aperture is king.

STF3111

9^m.9

10^m.2

2.5"

116°

2020

Vul

19^h25^m06.44^s / +21°50'03.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

White stars, very slight magnitude difference, wide >2". Not physical

COU513

9^m.2

9^m.9

0.3"

6°

2016

Vul

19^h25^m08.84^s / +22°12'56.90"

Mark McCarthy

Fremont (California/USA)

508mm (1067x)

Deeply notched overlapping disks -- I think it's hairline split at best moments -- slight mag difference

HJ2871, 4 Vul

5^m.2

10^m.0

13.5"

87°

2016

Vul

19^h25^m28.54^s / +19°47'54.70"

5^m.2

11^m.7

50.9"

212°

2016

Mark McCarthy Fremont (California/USA)	317mm (277x)	AB: 4 Vul. Light orange and very faint star near, with another 2x fainter and farther away, noticed with AV only. (AB is first & AC second)
Mark McCarthy Fremont (California/USA)	317mm (277x)	AC: 4 Vul. Light orange and very faint star near, with another 2x fainter and farther away, noticed with AV only. (AB is first & AC second)

STF2518

8^m.2

10^m.5

5.5"

352°

2015

Aql

19^h25^m48.30^s / +14°36'31.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Yellow-white A and slightly red B, wide, 2 delta mag. WDS says physical, but there is no parallax range overlap

BOW7

10^m.4

11^m.0

9.6"

251°

2018

Sge

19^h26^m25.50^s / +18°38'38.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Unremarkable wide pair, half delta mag.

BOW6

10^m.8

12^m.5

7.2"

309°

2015

Sge

19^h26^m32.98^s / +18°37'14.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Nothing special, ~1 delta mag wide. Not physical. W.M. Bowyer

STF2525

8^m.2

8^m.4

2.3"

290°

2020

Vul

19^h26^m33.71^s / +27°19'21.90"

Robert Zebahl Leipzig (Germany)	152mm (100x)	2020-06-24: At 49x slightly elongated, at 69x just separated with visible difference in brightness. At 100x nice view with clear separation and slight difference in brightness, but no visible colors.
Mark McCarthy Fremont (California/USA)	152mm (175x)	Close near equal white stars. Physical with 289-year period
Mark McCarthy Fremont (California/USA)	508mm (205x)	Near equal yellow-white stars, wide. An amazingly precise 882.894 year period. I will not notice the change

STF2524

9^m.2

9^m.5

5.5"

81°

2020

Vul

19^h26^m35.78^s / +25°29'48.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Near equal white stars, wide. Not physical

STF2523

8^m.0

8^m.1

6.4"

148°

2020

Vul

19^h26^m48.38^s / +21°09'46.20"

Mark McCarthy Fremont (California/USA)	152mm (175x)	Equal white stars, well separated. WDS says physical, however they do not share the same parallax ranges, so they are not
Mark McCarthy Fremont (California/USA)	203mm (205x)	Near equal white, well separated. Near the Coat Hanger, which I viewed through the finder.

STF2520

9^m.7

10^m.3

1.9"

234°

2018

Aql

19^h26^m48.65^s / +12°52'04.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Nice slightly unequal white stars, about 2" separation

★★

A2786

10^m.1

0.4"

108°

2008

Vul

19^h26^m57.67^s / +21°09'02.70"

Mark McCarthy

Fremont (California/USA)

508mm (1067x)

Wow! Exceptionally fine but clean split, ~1 delta split, best without apodising mask, nearly perfect seeing. In the same FOV as STF 2523.

A1648

9^m.7

9^m.9

0.9"

182°

2016

Aql

19^h27^m01.49^s / +16°05'56.90"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Nice close split, unequal, half delta mag, white. WDS uncertain, and there is just -1% parallax range overlap with 2% error, 314 AU weighted separation, 2.05/1.89 solar mass. Even with the slight out of bounds parallax, these might be gravitational

A159

8^m.5

10^m.4

0.8"

336°

2017

Vul

19^h27^m20.85^s / +20°40'08.00"

Mark McCarthy

Fremont (California/USA)

508mm (1067x)

Super difficult. B appears just within A's diffraction ring, extremely faint, with seeing which is 7/10. Coalesces to a point at the correct PA, which I looked up during the observation to make sure I was looking at the correct quadrant of the star. Part of STF 2527 AC.

AG379

9^m.6

10^m.5

13.2"

83°

2020

Aql

19^h27^m22.68^s / +13°59'18.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

1 delta mag, wide. WDS says physical, but there is no parallax range overlap (-98%), so they are not

COU514

9^m.8

9^m.3

0.5"

88°

2007

Vul

19^h27^m33.15^s / +20°09'17.30"

Mark McCarthy

Fremont (California/USA)

508mm (1067x)

Subtle notched elongation, white stars, noticeable magnitude difference.

STF2534

8^m.2

8^m.4

7.0"

63°

2020

Cyg

19^h27^m40.63^s / +36°31'44.40"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x zwei annähernd gleichhelle Sterne, ganz knapp getrennt - bei 64x passen 2-3 Blatt Papier mehr zwischen die beiden Sterne - Komponente A mit einem etwas kühleren weiß als B
Mark McCarthy Fremont (California/USA)	152mm (175x)	Very slight magnitude difference, blue-white, wide. WDS is uncertain, but there is -38% parallax overlap, so it is not
Mark McCarthy Fremont (California/USA)	317mm (277x)	Near equal white, 7-8"

STF2529

8^m.6

10^m.2

6.7"

298°

2018

Sge

19^h28^m04.99^s / +17°38'54.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Dull yellow-white A and deeper orange yellow b, two delta, wide. Not physical

★★

STF3132

10^m.1

11^m.8

7.8"

39°

2020

Vul

19^h28^m12.76^s / +20°12'59.60"

Mark McCarthy Fremont (California/USA)	178mm (205x)	2 delta B seen with averted vision only. There are two other faint stars, WAL 113 AC and AD. Forms a double-double with STF2530 in the same field. WDS says physical, and there is 21% parallax overlap, 1,441 AU weighted separation, and 1.40/1.06 solar mass. However the radial velocity delta (2.07) exceeds the escape velocity (1.74), so likely will not remain gravitationally bound
Mark McCarthy Fremont (California/USA)	317mm (553x)	Near equal orange stars with hairline split April 2019

STF2519

8^m.3

8^m.5

12.0"

124°

2018

Aql

19^h28^m12.93^s / -09°32'15.90"

René Merting Drachhausen (Germany)	18x70	ein genauer Blick ist nötig, aber dann sind beide Komponenten schön voneinander getrennt zu erkennen - beide sind recht schwach und ohne Helligkeitsunterschied
René Merting Drachhausen (Germany)	76mm (18x)	bei 29x ein schön anzusehendes, ordentlich getrenntes Pärchen zweier gleich heller Sterne - 18x reichen ebenfalls noch für eine knappe Trennung

HU340

9^m.8

10^m.3

0.9"

120°

2016

Sge

19^h28^m21.65^s / +18°29'04.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very finely split even at 205x, noticeable magnitude difference, slightly orange stars

STF2530

9^m.4

10^m.7

5.6"

155°

2018

Vul

19^h28^m22.08^s / +20°19'08.20"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

1.5 delta mag, about 4" separation, white stars. In same field with STF2132. WDS uncertain, but there is 77% parallax range overlap, 577 AU weighted separation, solar mass 1.17/0.92, and the radial velocity delta is less than the escape velocity, so they are very likely gravitationally bound

STF2571

7^m.7

8^m.3

11.2"

19°

2016

Dra

19^h29^m30.03^s / +78°15'55.80"

Mark McCarthy

Fremont (California/USA)

152mm (175x)

Wide, 1 delta mag white. WDS says physical, but they don't share parallax range overlap -6%

STF2531

8^m.1

10^m.2

31.4"

28°

2015

Aql

19^h29^m30.07^s / +03°05'23.60"

René Merting

Drachhausen (Germany)

100mm (32x)

bei 32x ein auffälligeres Pärchen als der unmittelbar südöstlich stehende DS STF2532 - Komponente B ist auch schwach, aber A ist nur 1.5 Größenklassen heller - B steht gut abgesetzt nördlich von A

AG231

9^m.9

10^m.1

4.5"

239°

2018

Sge

19^h29^m34.45^s / +17°59'46.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Near equal pair, white, wide. Physical

J137

9^m.7

12^m.0

4.5"

18°

2015

Sge

19^h30^m01.65^s / +18°25'55.80"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Faint B ~5", ~2 delta. Not physical

STF2533

7^m.4

10^m.0

22.1"

212°

2015

Aql

19^h30^m04.70^s / -00°26'41.80"

René Merting

Drachhausen (Germany)

18x70

Komponente B ist ganz schwach knapp abgesetzt südwestlich von A zu erkennen - die Sichtung gelingt nur mit viel Konzentration

STF2532

6^m.3

10^m.5

33.0"

2°

2011

Aql

19^h30^m10.53^s / +02°54'14.70"

6^m.3

10^m.9

119.4"

197°

2016

10^m.5

10^m.9

151.3"

194°

2014

10^m.5

13^m.1

33.6"

133°

2015

René Merting

Drachhausen (Germany)

100mm (32x)

AB: bei 32x zeigt sich B gut abgesetzt nördlich von der schönen samtgelben A-Komponente - das Paar fällt nicht als Doppelstern auf, weil B zu schwach ist

★★★

beta Cyg, 6 Cyg, Albireo, STFA43

3^m.2

4^m.7

34.7"

54°

2021

Cyg

19^h30^m43.29^s / +27°57'34.90"

Christopher Hay Seeheim (Germany)	7x42	Handheld binoculars in reclining chair. Following a surprisingly easy split of Zeta Lyr, I try out whether Albireo may also be splittable. Indeed, the pair is split, difficult but definite. Staring at Altair (Alpha Aql) for a few seconds with the binoculars prior to observing Albireo heigtens my acuity and makes the split more definite. Component A exhibits a mild orange-yellow hue.
Robert Zebahl Leipzig (Germany)	8x40	Well split, but I didn't recognised any color.
René Merting Drachhausen (Germany)	10x50	Komponente A ist gleißend hell und stroh-gelb, Komponente B ist deutlich schwächer leicht abgesetzt von A erkennbar und strahlt eigenartig mint-grün
Christopher Hay Seeheim (Germany)	12x36	Well split. A golden-red, B cold blue. Gorgeous!
Robert Zebahl Leipzig (Germany)	16x70	2020-07-06: Bright orange & white-bluish.
Robert Zebahl Leipzig (Germany)	80mm (25x)	One of the most beautiful double stars in the northern hemisphere. Differences in brightness and color (orange-blue) are brilliant! Even under urban conditions with small aperture an enjoyment!
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x stehen beide Sterne weit getrennt - Komponente A mit einem satten zitronen-gelb, Komponente B mit einem leichten Stich ins Blaue
Jörg S. Schlimmer Germany	127mm (203x)	easy to split
Sarah Gebauer Germany	150mm (116x)	Erstbeobachtung August 2019: deutlicher Farbunterschied zwischen blau und sattem Gelb zu sehen
Jörg S. Schlimmer Germany	305mm (170x)	alle Komponenten einfach zu trennen

Werner E. Celnik Rheinberg (Germany)	150mm
Werner E. Celnik Rheinberg (Germany)	150mm

MCA55, bet 1 Cyg

Aa-Ac

3^m.4

5^m.2

0.3"

46°

2021

Cyg

19^h30^m43.29^s / +27°57'34.90"

Mark McCarthy

Fremont (California/USA)

508mm (445x)

Alberio A. Using all powers at both 20-inch and 7-inch, A is consistently out of round with the weaker end in the southern direction. Alberio B remains relatively round in the diffraction dance. Currently 0.365", it is widening to apastron by 2035 and might even be splitable by then

★

D20, V822 Aql

7^m.2

9^m.6

1.3"

65°

1991

Aql

19^h31^m15.78^s / -02°06'36.70"

Mark McCarthy Fremont (California/USA)	317mm (553x)	A has a notched / trailing star in east PA, very close in and very much fainter. With seeing. Tough!
Mark McCarthy Fremont (California/USA)	317mm (553x)	tight airy disk of A, and a faint star widely separated, 3 delta mag ~25" Very near to a pretty orange carbon star.

STF2536

8^m.4

11^m.4

1.8"

120°

2018

Sge

19^h31^m37.80^s / +17°46'58.60"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Blue-white A and much fainter ~3 delta B, split close, dull orange color. Very fine. Physical with 672.5 year period

HU945

9^m.8

10^m.4

1.2"

24°

2015

Cyg

19^h32^m08.62^s / +32°21'06.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Fine split, around half a mag delta, about 1" separation. WDS uncertain, but they do not share the same parallax range, not gravitationally bound.

BU650

8^m.2

11^m.7

6.5"

146°

2015

Aql

19^h32^m13.13^s / +06°30'11.30"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Very faint B, wide separation.

HU946

8^m.2

9^m.9

8.7"

214°

2015

Cyg

19^h32^m22.44^s / +34°17'02.60"

René Merting Drachhausen (Germany)	100mm (32x)	bei 64x begonnen, Komponente B ist knapp getrennt südwestlich von A sichtbar und deutlich schwächer als A - zurück auf 32x kann man in guten Momenten beide Sterne auch schon getrennt voneinander sehen, wenn man B zu sehen bekommt (B blitzt hin und wieder hervor)
Mark McCarthy Fremont (California/USA)	508mm (205x)	Easy light yellow A and bluish B, wide, 2 delta. Not physical

STF2540

7^m.5

9^m.2

5.4"

147°

2020

Vul

19^h33^m17.05^s / +20°24'50.50"

Mark McCarthy Fremont (California/USA)	152mm (175x)	White A and very light orange, 2 delta mag B, off of the Coat hanger asterism. WDS uncertain, however they do not share the same parallax range
Mark McCarthy Fremont (California/USA)	178mm (205x)	Pretty light yellow A and 2 delta reddish B, very nice. WDS uncertain, but they do not share parallax ranges
Mark McCarthy Fremont (California/USA)	317mm (553x)	Yellow and blue, pretty wide 1.5 delta mag.

ARY19

8^m.9

9^m.4

48.5"

13°

2015

Vul

19^h33^m18.55^s / +26°28'41.10"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Super-wide near equal. Why thought of as double? COU1028Aa-Ab is 0.3" 9.30/10.0, a good target for the 20-inch, and BD is COU1029, 7.4" 9.38/13.00. AB not physical per WDS

HU949

9^m.8

9^m.6

0.5"

87°

2016

Cyg

19^h33^m28.96^s / +33°05'23.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Hairline split at 533x, nice clean split at 667x, 1 delta mag. WDS uncertain, I don not find data for the B star in Gaia

HJ1414

9^m.4

10^m.8

14.3"

33°

2015

Cyg

19^h33^m32.75^s / +36°10'14.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very pretty yellow and blue stars, wide, 1 delta. Almost didn't look since it's a wide Herschel. Unfortunately it is not physical

BU653, 38 Aql

4^m.6

13^m.1

56.2"

289°

2008

Aql

19^h34^m05.35^s / +07°22'44.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Orange star and very wide separated B. Other fainter stars nearby, likely part of the 5 other stars in the system

GCB43

9^m.9

11^m.9

7.5"

264°

2015

Sge

19^h34^m18.03^s / +18°40'19.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very faint pair, ~2 delta B is on the edge of direct vision, wide ~5", probably not physical. M. Giacobini

STT375

7^m.7

8^m.9

0.7"

183°

2018

Sge

19^h34^m37.45^s / +18°07'41.20"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Sense an elongation or rod, marginal.
Mark McCarthy Fremont (California/USA)	508mm (533x)	Snowman at 205x, 333x, split with 533x, >1 delta mag, ~0.5". A is orange-yellow and B is blue-white. Physical with 682 year period, just coming apastron now.

HO274

8^m.3

11^m.1

3.9"

71°

2001

Sge

19^h34^m55.37^s / +16°27'04.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

White A, B is quite faint but resolved, ~4", delicate looking. Not physical

STT376

7^m.6

10^m.4

2.9"

237°

2017

Cyg

19^h35^m07.46^s / +34°11'59.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

White A and 2 delta ruddy B, well separated. WDS uncertain; they do not share the same parallax range, so not gravitational

AG234

10^m.0

10^m.2

2.7"

320°

2018

Cyg

19^h35^m39.62^s / +36°17'20.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

White near equal, nice split. Not physical

A2787

9^m.9

11^m.4

3.9"

111°

2018

Vul

19^h35^m47.31^s / +23°33'50.10"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Seen right away, 1 delta mag and about 4". Nice stars. [not physical]

STF2543

6^m.8

10^m.4

11.5"

151°

2015

Aql

19^h36^m12.61^s / +06°00'26.70"

Mark McCarthy

Fremont (California/USA)

152mm (175x)

Light orange A and much fainter, wide B, just seen with direct vision. WDS uncertain but these do not share any parallax, so they are not

STT377

9^m.4

0.9"

34°

2016

Cyg

19^h36^m17.16^s / +35°39'34.40"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

White equal stars, elongated at 205x, cleanly split with 333x. WDS uncertain; unfortunately they do not share parallax ranges, so not gravitational

STF2548

8^m.5

9^m.8

9.3"

100°

2020

Vul

19^h36^m28.51^s / +25°00'04.40"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Obvious pair, 1.5 delta mag ~10"

★★

A598

9^m.9

10^m.2

1.0"

191°

2016

Cyg

19^h36^m29.82^s / +41°24'08.60"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

UV Cyg. Orange-red with very much fainter blue ~1", 1 delta mag. Seeing must still. A a perfect round disk the color of the setting sun. Very special.

STT378

7^m.7

8^m.9

1.4"

285°

2016

Cyg

19^h36^m32.28^s / +41°00'35.10"

Robert Zebahl

Leipzig (Germany)

152mm (133x)

2022-08-07: The double star is part of a prominent chain of three stars. At 133x well separated but close pair with clear difference in brightness. Very nice view at 200x.

STF2541

8^m.7

10^m.1

5.4"

327°

2018

Aql

19^h36^m45.65^s / -10°26'36.60"

René Merting

Drachhausen (Germany)

76mm (95x)

A ist schon recht schwach, B ist noch schwächer und offenbart sich mir erst bei 95x, B steht nordwestlich von A und zeigt sich gut getrennt - schön ist trotzdem anders

HU342

9^m.8

10^m.4

4.6"

256°

2018

Sge

19^h37^m07.56^s / +17°23'11.00"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

1 delta mag, well separated white stars fairly faint. WDS says physical

epsilon Sge, 4 Sge, H6 26

5^m.8

8^m.3

87.4"

82°

2017

Sge

19^h37^m17.38^s / +16°27'46.00"

5^m.8

13^m.2

100.7"

278°

2013

René Merting Drachhausen (Germany)	12x50	AB: ein komfortabel getrenntes, gut sichtbares Pärchen - A im Westen ist weiß, B ist zwei Größenklassen schwächer und grauweiß
René Merting Drachhausen (Germany)	100mm (20x)	AB: bei 32x weit getrennt - Komponente A mit einem satten zitronengelb, B im Osten graubläulich - bei 20x ähnlicher Eindruck, bei B verliert sich der Farbeindruck

STF2551

9^m.7

10^m.5

6.8"

42°

2020

Vul

19^h37^m23.23^s / +22°48'51.00"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Half delta mag, about 7", may be part of triple with very wide 1 more magnitude fainter C about 60 degrees away from B.

BU144

9^m.5

9^m.6

6.1"

356°

2020

Cyg

19^h37^m47.09^s / +30°21'18.60"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Clean star images, equal pair, wide, very pretty, in a dense field. Great view

STF2552

8^m.5

9^m.1

5.3"

195°

2020

Sge

19^h37^m55.00^s / +19°21'32.20"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

1 delta mag, well separated white stars. WDS says physical

HJ1428

6^m.6

10^m.2

35.5"

232°

2015

Cyg

19^h37^m56.71^s / +49°17'03.90"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Interesting string of 6 stars, with 7th at right angle from the central bright star in the string, which is orange.

MLB765

10^m.0

11^m.5

6.5"

237°

2015

Cyg

19^h38^m08.56^s / +29°12'40.50"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Nice one delta mag pair, wide, very pretty

BU249

7^m.4

9^m.4

0.8"

109°

2008

Aql

19^h38^m21.68^s / +00°20'43.60"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Some brightening in diffraction, but cannot claim success

BU1471

7^m.5

11^m.9

12.5"

333°

2017

Sge

19^h38^m27.48^s / +17°15'26.00"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Very faint B, needed averted vision to notice it, can just hold it direct. Wide 10-12", 3 delta mag, orange A.

COU1162

Aa-Ab

9^m.8

9^m.9

0.8"

128°

2007

Cyg

19^h38^m37.18^s / +29°52'53.40"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Fine snowman at 333x but needed 667x to split, very close pair. SLE 654 AB noticed as a very faint star about 15" out and a few degrees difference in PA

STF2545

6^m.8

8^m.5

3.7"

326°

2020

Aql

19^h38^m43.36^s / -10°09'23.70"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Easy, wide separation yellow and orange.

STF2547

8^m.1

9^m.5

20.8"

330°

2016

Aql

19^h38^m56.50^s / -10°20'20.60"

8^m.1

11^m.1

49.6"

141°

2015

René Merting Drachhausen (Germany)	18x70	AB: Komponente A ist schon schwach, B noch schwächer und steht relativ knapp abgesetzt nordwestlich von A - Helligkeitsunterschied schwer abschätzbar, vielleicht eine halbe Magnitude
René Merting Drachhausen (Germany)	76mm (57x)	AB: bei 29x ist B im NW von A leicht abgesetzt erkennbar, B ist auch bei 18x getrennt von A erkennbar und etwas mehr als eine Größenklasse schwächer AC: erst bei 57x ist C ganz schwach südöstlich von A erkennbar - C ist nochmal deutlich schwächer als B und der Abstand AC dürfte etwas mehr als das Doppelte von AB sein

S722

7^m.2

7^m.5

10.3"

236°

2016

Sgr

19^h39^m12.97^s / -16°54'28.30"

René Merting

Drachhausen (Germany)

76mm (29x)

bei 29x wunderschön, zwei gleich helle Sterne ganz dicht aneinander geschmiegt bzw. knapp getrennt - wenn ich mich entscheiden müsste, welcher Stern schwächer ist, dann vermutlich die südwestliche Komponente - zurück auf 18x erscheinen beide Komponenten wie eine 8 kurz vor der Trennung

SEI654

9^m.3

10^m.7

14.8"

115°

2015

Cyg

19^h39^m20.06^s / +31°52'19.50"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Wide one delta mag. pair

SLE659

11^m.0

12^m.5

8.4"

107°

2015

Cyg

19^h39^m23.17^s / +30°29'09.40"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Faint and wide pair, B star quite faint at edge of direct vision

★★★

HN 84, V340 Sge

6^m.4

9^m.5

28.4"

301°

2013

Sge

19^h39^m25.33^s / +16°34'16.00"

René Merting Drachhausen (Germany)	12x50	verdammt schwer - Komponente B ist ganz schwach nordwestlich von A auszumachen - beide Sterne berühren sich noch
René Merting Drachhausen (Germany)	16x70	beide Sterne präsentieren sich gut getrennt, nicht zu weit aber auch nicht zu nah - Komponente A meint es gut mit der Farbe gelb, bei Komponente B kann ich keine Farbe erkennen
Christopher Hay Seeheim (Germany)	80mm (30x)	Primary ruddy red, secondary wide apart but too faint for any colour impression. Straw-yellow Epsilon Saggitae half a degree to the west with its ice-blue eastern companion enhances the experience of colour contrast in the FOV and is actually more attractive than HN 84 with this aperture and power.
René Merting Drachhausen (Germany)	100mm (20x)	bei 20x sind beide Komponenten weit getrennt - Komponente A auffällig gelb-orange, B dagegen grau-blau, ein schöner Farbkontrast, der sich bei 32x verstärkt
Sarah Gebauer Germany	150mm (85x)	Holden 84, eine sehr goldgelbe Komponente und in 28'' Abstand die zweite, sehr schwache und weiße Komponente mit einem Hauch von Blau, sehr, sehr schön!
Christopher Hay Seeheim (Germany)	150mm (96x)	Main component ruddy tangerine orange, companion wide apart and ice blue. The longer I look the stronger the colour contrast becomes, which is by no means normal in many doubles. Epsilon Saggitae in same 0.8-degree field of view is straw-yellow with a cold blue companion (a field star?) pointing away from Epsilon in the direction of HN 84. I can’t think offhand of a better colour-contrast pair that can be framed in this manner in the same FOV.
Sarah Gebauer Germany	150mm (160x)	die hellere Hauptkomponente ist deutlich und stark goldfarben, die zweite dagegen sehr schwach, silbrig und dumpf
Mark McCarthy Fremont (California/USA)	178mm (205x)	Very pretty orange A and neon blue B, 1 delta mag, very wide

STF2557

7^m.5

10^m.2

11.0"

103°

2015

Cyg

19^h39^m35.20^s / +29°44'55.50"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

The closest to the 7th mag star, among a constellation of possible pairings visible in the field

BRT198

10^m.2

11^m.6

5.1"

154°

2016

Vul

19^h40^m06.65^s / +25°15'33.70"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Nice picked out if field between two other stars, middle of a string. B can be seen direct but best with some indirect vision. 1.5 delta mag, wide sept about 3"

J776

11^m.1

11^m.6

3.5"

47°

2016

Cyg

19^h40^m08.45^s / +30°35'50.20"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Faint pair, one is about half a delta mag, the other flashes with averted vision and can hold direct once found. [not physical]

★

A272

9^m.8

10^m.4

1.3"

193°

2009

Vul

19^h40^m09.48^s / +26°11'23.40"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Wow, I get the split, very close but split, obvious difference in magnitude, about 1 delta mag. Less than 1" sep. Impressed i could get it [CD is 15th mag and 1"!]

A166

9^m.2

9^m.5

0.9"

241°

2016

Vul

19^h40^m10.51^s / +23°30'43.10"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Close pair, 1/2 delta mag, elongates and splits with seeing. nice at this magnification.

A2788

9^m.8

10^m.9

1.3"

328°

2015

Vul

19^h40^m19.26^s / +22°50'11.00"

Mark McCarthy

Fremont (California/USA)

203mm (533x)

Elongated is the best I can get

STF2560

6^m.6

10^m.5

14.2"

299°

2015

Vul

19^h40^m39.58^s / +23°43'04.70"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White A, B just barely seen with direct vision as a very small point, >3 delta mag, wide. WDS says not physical, and they do not share parallax ranges

54 Sgr, HJ599

5^m.4

7^m.7

45.5"

41°

2019

Sgr

19^h40^m43.34^s / -16°17'35.30"

René Merting Drachhausen (Germany)	10x50	Komponente C sitzt nordöstlich von A, beide sind einfach zu trennen - großer Helligkeitsunterschied, schwer abschätzbar
René Merting Drachhausen (Germany)	76mm (18x)	bei 29x zeigen sich beide Komponenten in komfortablem Abstand zueinander - C ist gut 2 Größenklassen schwächer - bei 18x sind beide auch gut zu trennen, C hat immernoch ordentlich Abstand zu A - bei 57x habe ich mal nach den Farben geschaut, A stahlt warmweiß bzw. licht gelblich, C ist grau

BLL41, TT Cyg

7^m.9

12^m.3

70.3"

211°

2015

Cyg

19^h40^m57.00^s / +32°37'05.70"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

B very wide, very faint from A. A is orange, B also a little orangish.

HO112

10^m.2

2.8"

259°

2018

Sge

19^h41^m29.50^s / +18°38'03.20"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Very faint, almost ghostly, near equal, split, really nice. Not physical

★★

STFA46, 16 Cyg

6^m.0

6^m.2

39.7"

133°

2020

Cyg

19^h41^m49.09^s / +50°31'31.60"

Christopher Hay Seeheim (Germany)	3x63	Self-built binoculars, hence the unusual specification. Made of top-quality teleconverters, apochromatic and sharp to the edge. With naked eye under good suburban sky 16 Cyg is just seen. In the 3x binoculars the double is split into two finest points of light in good moments despite the low magnification. A physical pair according to Stelledoppie. Two-star rating awarded because this is a true physical pair that can be split with the smallest binoculars and reveals increasingly more with growing binocular size (brightness disctinction between A and B in 7x50, colour distinction in 15x45).
Christopher Hay Seeheim (Germany)	7x50	Finely split, A-component appears very slightly brighter than B-component. A very pleasing binocular pair.
Christopher Hay Seeheim (Germany)	15x45	Wide split, very strong visual presence dominating 4.5° FOV. A-component very pale orange, B-component equally pale blue.
Robert Zebahl Leipzig (Germany)	16x70	2021-06-01: Very striking, bright at moderate separation and small difference in brightness. White-yellowish & white.
René Merting Drachhausen (Germany)	18x70	zwei ordentlich getrennte fast gleich helle Sterne - beide Komponenten sind reinweiß und die hellsten Sterne im unmittelbaren Umfeld - auffällig
Christopher Hay Seeheim (Germany)	44x100	Extremely strong pair in 1.9° FOV. Northern component marginally brighter and with slightest touch of yellow.
Sarah Gebauer Germany	100mm (80x)	der Doppelstern springt mich regelrecht an bei der Suche nach dem Blinking PN, es sind zwei ganz durchdringende, gleich helle Sternpunkte, die zwar schon einem sternreichen Umfeld stehen, aber dennoch deutlich heller hervortreten; südlich davon befindet sich rein optisch betrachtet eine abgeschwächte Kopie davon
Mark McCarthy Fremont (California/USA)	317mm (553x)	16 Cyg: Wide equal orange-yellow, also split in 80mm finder

KUI94

6^m.5

7^m.8

0.5"

158°

2014

Cyg

19^h41^m57.63^s / +40°15'14.60"

Frederik Wanink

Itterbeck (Germany)

254mm (640x)

unsicher, 8förmig

Frederik Wanink

Itterbeck (Germany)

254mm

../projects/double-stars/frederik-wanink/photographs/KUI%2094.jpg

STF2563

8^m.7

9^m.5

6.0"

286°

2020

Sge

19^h42^m28.87^s / +17°25'38.90"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

White, 1 delta mag, well separated. WDS says physical

STT380, chi Aql

5^m.4

6^m.6

0.4"

77°

2020

Aql

19^h42^m34.01^s / +11°49'35.80"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Diffraction a bit messy but I so see olive shaped "disk"

STF2562

7^m.0

8^m.7

27.2"

251°

2019

Aql

19^h42^m45.86^s / +08°22'57.50"

7^m.0

12^m.1

82.0"

289°

2015

7^m.0

9^m.9

117.2"

222°

2015

8^m.7

12^m.1

62.7"

305°

2015

8^m.7

9^m.9

94.6"

214°

2015

René Merting Drachhausen (Germany)	100mm (20x)	AB: bei 32x fällt das Paar sofort auf - Komponente A im Osten ist gut 2 Größenklassen heller als B - schöner Farbkontrast aufgrund des Helligkeitsunterschiedes, Komponente A strahlt weiß mit einem Stich ins orange, B ist grau - bei 20x ist die Trennung auch einfach AD: bei 32x von A und B ausgehend ist das der nächste erkennbare Stern im Umfeld, er steht etwas weiter südwestlich und ist gut viermal soweit von A entfernt wie B - Komponente D wirkt noch gräulicher und transparenter als B - Komponente B dagegen wirkt schon wieder weiß im Vergleich zu D - bei 20x sind auch alle drei Sterne sichtbar
Mark McCarthy Fremont (California/USA)	152mm (175x)	AB: Easy wide light yellow A and 1 delta mag blue B. WDS says physical but no orbit yet. These are likely gravitationally bound: 48% parallax range overlap, 1,660 AU separation, and the radial velocity is less than the escape velocity
René Merting Drachhausen (Germany)	320mm (45x)	AB: bei 45x weit getrenntes Pärchen - Farbkontrast weiß-gelb/ orange

STTA188 & STU11

STTA188

7^m.7

8^m.0

61.1"

121°

2017

Cyg

19^h42^m48.56^s / +37°41'12.50"

STU11

7^m.7

8^m.1

146.0"

228°

2013

STU11

7^m.7

11^m.4

101.4"

196°

2015

STU11

7^m.7

12^m.3

46.2"

191°

2015

STTA188

7^m.7

13^m.5

29.8"

120°

2015

STU11

8^m.0

9^m.6

60.4"

173°

2015

STTA188

8^m.0

13^m.5

30.8"

302°

2015

René Merting

Drachhausen (Germany)

100mm (20x)

STU11 (BD): bei 20x weit getrennt - Komponente D im Süden deutlich schwächer - viele weitere Sterne im unmittelbaren Umfeld

STT383

7^m.0

8^m.3

0.8"

15°

2014

Cyg

19^h42^m56.26^s / +40°43'18.30"

7^m.0

11^m.6

45.2"

99°

2002

7^m.0

12^m.4

68.1"

43°

2002

Robert Zebahl Leipzig (Germany)	152mm (240x)	AB: 2022-08-07: Under these average conditions the double star is well visible as such. The fainter companion appears as a washed out star close to the primary component. In quiet moments the overlapping diffraction disks are well visible.
Frederik Wanink Itterbeck (Germany)	254mm (640x)	AB: getrennt

Frederik Wanink

Itterbeck (Germany)

254mm

../projects/double-stars/frederik-wanink/photographs/STT%20383%20AB.jpg

STT384

7^m.6

8^m.2

1.0"

196°

2018

Cyg

19^h43^m47.09^s / +38°19'20.50"

7^m.6

9^m.8

59.4"

297°

2015

7^m.6

10^m.8

116.0"

294°

2015

René Merting Drachhausen (Germany)	100mm (20x)	AC: bei 20x weit getrenntes Pärchen - Komponente C ist deutlich schwächer als A
Frederik Wanink Itterbeck (Germany)	254mm (640x)	AB: deutliches Paar
Mark McCarthy Fremont (California/USA)	317mm (553x)	AB: Nice near equal ~1", rest of field angular with stars (AB seen, AC and AD in the field.)

Frederik Wanink

Itterbeck (Germany)

254mm

../projects/double-stars/frederik-wanink/photographs/STT%20384%20AB.jpg

★★

BU658, PS Vul

6^m.7

7^m.9

0.4"

282°

2009

Vul

19^h43^m55.97^s / +27°08'07.50"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Pretty orange star, subtly out of round / pear shaped. In a large cluster-like group of stars, around 3 degrees angular size, V-shaped, pretty in the finder. If the stars were brighter it would be as famous as the M45.

STF2567

7^m.9

10^m.0

17.7"

310°

2015

Aql

19^h44^m06.10^s / +12°22'21.10"

René Merting

Drachhausen (Germany)

100mm (32x)

bei 32x braucht es für den schwachen Begleiter etwas Geduld, er ist dann aber gut abgesetzt erkennbar

BEW3

11^m.8

12^m.5

11.5"

302°

2015

Cyg

19^h44^m19.61^s / +30°20'45.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

B is just on edge of detectability, very busy filed. Not physical. Bastian, U., Eisloeffel, J., & Wiese, K., a German amateur group. Not physical

DA13

7^m.4

11^m.6

2.0"

274°

2018

Cyg

19^h44^m44.02^s / +44°55'44.00"

Mark McCarthy

Fremont (California/USA)

508mm (445x)

Very delicate light yellow-orange A and bluish B, very much fainter, <2", a nice fine point. Unfortunately they do not share parallax ranges, so not gravitational

STF2569

8^m.4

9^m.1

2.2"

357°

2020

Sge

19^h44^m47.81^s / +16°48'55.10"

René Merting Drachhausen (Germany)	100mm (142x)	bei 107x ist mit etwas Geduld blickweise eine 8 erkennbar - bei 142x dann sehe ich in guten Momenten beide Komponenten ganz knapp getrennt - beide Sterne mit fast identischer Helligkeit, Komponente A im Süden ist nur ganz knapp heller - Grenzbeobachtung
Mark McCarthy Fremont (California/USA)	203mm (333x)	One delta mag, 2", blue-white stars

Winnecke 7, WNC7

10^m.6

11^m.2

95.1"

193°

2015

Cyg

19^h44^m48.15^s / +50°31'30.30"

René Merting

Drachhausen (Germany)

18x70

der Zentralstern von NGC 6826 und zugleich Komponente A von WNC 7 ist relativ einfach sichtbar - Komponente B zeigt sich ganz schwach südwestlich von A mit deutlichem Abstand

WRH23, SU Cyg

7^m.0

10^m.5

24.8"

289°

2015

Cyg

19^h44^m48.74^s / +29°15'52.90"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

SU Cyg: Orange in the finder, lighter in the scope. Wide separation, 3 delta mag.

★

AGC10 & STF2570

AGC10

8^m.4

0.2"

141°

2009

Aql

19^h44^m56.78^s / +10°46'30.60"

STF2570

AB-C

7^m.6

9^m.8

4.3"

277°

2016

René Merting Drachhausen (Germany)	100mm (107x)	STF2570 (AB-C): beide Komponenten erscheinen bei 107x knapp getrennt - der Begleiter ist nur ganz schwach sichtbar, wie ein Geist
Stefan Loibl Rosenheim (Germany)	102mm (102x)	STF2570 (AB-C): (AB) orange, C red-orange, faint pair, close to gamma Aql
Mark McCarthy Fremont (California/USA)	152mm (175x)	STF2570 (AB-C): Light orange A and blue B, nice separation, 2 delta mag. AB is AGC 10, 0.2" 8.43/8.42
Mark McCarthy Fremont (California/USA)	152mm (175x)	STF2570 (AB-C): 2 delta mag, light orange AB and blue B. AB is AGC 10, 0.2" 8.43/8.42 and would be a good target for the 20-inch
Mark McCarthy Fremont (California/USA)	152mm (285x)	STF2570 (AB-C): Easily split, white A and much fainter ruddy B. Did not see AB, which is near equal mag. 0.2", which I could get with the 20-inch on a good night.
René Merting Drachhausen (Germany)	320mm (72x)	STF2570 (AB-C): bei 72x knapp getrenntes Pärchen, Komponente AB im Osten weiß-gelblich, C deutlich schwächer
Mark McCarthy Fremont (California/USA)	508mm (333x)	AGC10 (AB): Wide split pair. I was trying for AB 0.2" which only suggested elongation, too marginal to claim success
Mark McCarthy Fremont (California/USA)	508mm (410x)	AGC10 (AB): I can sense olive shape, very tough.
Mark McCarthy Fremont (California/USA)	508mm (410x)	STF2570 (AB-C): White and off white wide separated pair, ~1 delta mag.

★

STF2579, delta Cyg, 18 Cyg

2^m.9

6^m.3

2.7"

213°

2020

Cyg

19^h44^m58.44^s / +45°07'50.50"

Robert Zebahl Leipzig (Germany)	70mm (200x)	2019-07-28: At 100x only indicated. At 200x the much fainter companion is visible as a slightly elongated brightening on the first diffraction ring.
Uwe Pilz Leipzig (Germany)	105mm (288x)	blauweiß
Robert Zebahl Leipzig (Germany)	152mm (133x)	2022-09-21: At 92x clearly separated, but still pretty tight. Primary component slightly yellowish with much fainter companion. At 133x easy to separate. The faint companion appears orange-brownish.
Mark McCarthy Fremont (California/USA)	317mm (553x)	Very bright white with ruddy B, ~4", 4 delta mag. Nice!

STF2577

8^m.4

9^m.6

6.1"

262°

2020

Vul

19^h45^m12.27^s / +20°54'50.30"

René Merting Drachhausen (Germany)	100mm (64x)	bei 32x sehe ich nur einen kupferfarbener Stern - bei 64x taucht westlich von ihm ein schwacher Begleiter auf, beide sind gut getrennt - Komponente B passt farblich gut zu Komponente A, auch wenn ich nicht wirklich beschreiben kann, welchen Farbstich ich da sehe
Mark McCarthy Fremont (California/USA)	203mm (333x)	Wide, one and half delta mag, light orange and blue stars

STF2578

6^m.4

7^m.0

14.9"

125°

2019

Cyg

19^h45^m39.65^s / +36°05'27.60"

Robert Zebahl Leipzig (Germany)	70mm (22x)	At 22x easy with visible brightness and color difference. The slight color difference is even better visible at 44x: A appears white-yellowish, B slightly bluish.
René Merting Drachhausen (Germany)	100mm (32x)	bei 20x knapp getrennt, bei 32x ein ordentlich getrenntes Pärchen - Komponente B im SO ist nur leicht schwächer und mit leichtem Farbkontrast, aber dieser ist nicht greifbar

STT385

7^m.8

9^m.6

1.2"

51°

2016

Cyg

19^h45^m48.77^s / +40°33'18.90"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Yellow disk with fine blue point, with seeing, 1-1.5"
Mark McCarthy Fremont (California/USA)	508mm (205x)	Bright white A and 2 delta mag B just separated at low power. This one is likely gravitational, 94% parallax overlap, 757 AU weighted separation, high stellar mass 4.01/2.67

H5 137

6^m.2

8^m.2

38.8"

25°

2019

Cyg

19^h45^m51.35^s / +35°00'45.90"

René Merting

Drachhausen (Germany)

100mm (20x)

bei 20x weit getrenntes Pärchen - bei 32x Komponente A gelblich, B ohne Färbung

A601

10^m.4

11^m.4

1.2"

156°

2010

Cyg

19^h45^m57.37^s / +41°44'56.70"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

1 delta mag well split white stars. Not physical, no parallax overlap

17 Cyg

STF2580

5^m.1

9^m.2

25.9"

68°

2020

Cyg

19^h46^m25.60^s / +33°43'39.30"

STF2580

5^m.1

9^m.4

106.3"

122°

2020

WNO56

5^m.1

8^m.5

792.0"

235°

2002

STF2580

9^m.2

8^m.6

817.6"

236°

2010

STF2576

8^m.5

8^m.6

3.2"

155°

2020

René Merting Drachhausen (Germany)	100mm (20x)	AB: bei 20x locker getrennt - Komponente A satt gelb, B wegen des großen Helligkeitsunterschiedes gräulich-bräunlich
Uwe Pilz Leipzig (Germany)	120mm (140x)
Robert Zebahl Leipzig (Germany)	152mm (92x)	2021-07-24: At 30x the components A, B & C are easily visible, whereby A & B are still quite close together. The bright component A appears in a pale yellow. At 92x also the pair FG is separated easily and looks less belonging to the system because of the wide separation to the other components. All in all it is worth observing.
Winfried Kräling Marburg (Germany)	152mm (175x)	A, B & C
Mark McCarthy Fremont (California/USA)	317mm (277x)	AB: 17 Cyg: Yellow and slightly red, well separated, 1 delta mag. (This is an amazingly complex system with 11 stars in all sorts of combinations. Why not just call it an open cluster?)

OL72

10^m.5

10^m.6

7.1"

9°

2016

Sge

19^h46^m42.32^s / +18°38'49.70"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Faint, well split, slight magnitude difference. Not physical

HU345

9^m.0

10^m.0

3.8"

104°

2018

Sge

19^h46^m45.89^s / +17°33'09.00"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Light yellow-orange stars, 1 delta mag, well split, nice! WDS says physical

AG391

7^m.7

9^m.2

52.3"

297°

2015

Aql

19^h47^m56.98^s / +10°02'23.40"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x easy, ein weit auseinander stehendes Paar - Komponente A im Südosten ist zartgelb, B im Nordwesten wirkt kupfergrau - auffallend im Umfeld
René Merting Drachhausen (Germany)	320mm (45x)	bei 45x ein weit getrenntes Sternpaar - B ist gut 1.5 Magnituden schwächer und kommt wie so oft mausgrau daher - Komponente A strahlt in einem eigentümlichen Kupfer-Orange, dadurch schön anzusehender Farbkontrast

HDS2814

8^m.5

10^m.6

18.3"

139°

2016

Sgr

19^h48^m01.78^s / -14°34'02.70"

René Merting

Drachhausen (Germany)

320mm (45x)

bei 45x ein schickes Sternpaar - gut getrennt und doch eng zusammen stehend - B im Süden ist sehr schwach, bestimmt 2-2.5 Größenklassen schwächer - A strahlt reinweiß, B wirkt grau

STT386

8^m.5

8^m.6

1.0"

71°

2018

Cyg

19^h48^m16.51^s / +37°09'37.50"

Robert Zebahl Leipzig (Germany)	152mm (270x)	Clearly visible as a double star with touching diffraction disks. Not difficult.
Frederik Wanink Itterbeck (Germany)	254mm (640x)	trotz schwacher Komp. gut zu sehen
Mark McCarthy Fremont (California/USA)	317mm (553x)	Tight near equal, nice, split with seeing, ~1"

DOO11

10^m.0

10^m.9

2.8"

281°

2015

Vul

19^h48^m21.40^s / +24°52'56.80"

Mark McCarthy

Fremont (California/USA)

203mm (533x)

Pretty pair of blue stars, one delta mag, 3" sep. Very nice! [not physical]

STF2584

9^m.1

9^m.2

1.9"

293°

2020

Vul

19^h48^m22.40^s / +22°11'56.50"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Near equal, well split 2"

STF2586

7^m.6

9^m.3

3.8"

226°

2020

Vul

19^h48^m34.30^s / +24°57'43.90"

Mark McCarthy

Fremont (California/USA)

203mm (533x)

White and light blue, wide ~5", 1.5 delta mag

★★

STF2583, 52 Aql, pi Aql

6^m.3

6^m.8

1.4"

105°

2019

Aql

19^h48^m42.05^s / +11°48'57.30"

Robert Zebahl Leipzig (Germany)	102mm (160x)	2022-09-23: Small difference in brightness visible. From time to time the double star appeared just separated with a fine gap, but at least visible as a distinct '8'.
Stefan Loibl Rosenheim (Germany)	102mm (205x)	not fully split, seen as constricted '8'
Robert Zebahl Leipzig (Germany)	120mm (337x)	At 100x elongated, at 200x seen as '8'. At 337x split in moments of good seeing, but still very tight. Overall the seeing was not so good.
Sarah Gebauer Germany	150mm (160x)	wieder ganz haarscharf getrennt, bildet ein großes, nettes Dreieck mit Feldsternen, gefällt mir wieder sehr gut!
Sarah Gebauer Germany	150mm (170x)	bei 170x ganz, ganz knapp getrennt, ein haarfeiner, schwarzer Trennstrich ist zu sehen, eine geniale Grenzbeobachtung!
Robert Zebahl Leipzig (Germany)	152mm (133x)	2022-09-22: Very finely separated pair of nearly equally bright components.
Mark McCarthy Fremont (California/USA)	152mm (285x)	Pi Aql. Very pretty near equal light blue stars, cleanly separated
Mark McCarthy Fremont (California/USA)	203mm (205x)	Pi Aql. Pretty yellow-orange A and a little more than 1 delta mag pale blue B, ~1", yet neatly separated
Frederik Wanink Itterbeck (Germany)	254mm (640x)	Helligkeitsunterschied erkennbar

KU123

9^m.4

11^m.0

21.6"

298°

2015

Vul

19^h48^m42.71^s / +25°48'28.40"

Mark McCarthy

Fremont (California/USA)

203mm (533x)

Wide pair, one delta mag, bluish color [not physical]

★

STT387

7^m.1

7^m.9

0.5"

94°

2020

Cyg

19^h48^m43.81^s / +35°18'41.30"

Frederik Wanink Itterbeck (Germany)	254mm (640x)	zeitweise als 8 zu sehen
Mark McCarthy Fremont (California/USA)	317mm (277x)	Red, very close pair? Seeing not supporting higher magnification. Marginal.
Mark McCarthy Fremont (California/USA)	317mm (553x)	Overlapping disks, to a nearly hairline split with seeing. Half delta mag.

Frederik Wanink

Itterbeck (Germany)

254mm

../projects/double-stars/frederik-wanink/photographs/STT%20387.jpg

zeta Sge, 8 Sge

AGC11

5^m.6

6^m.0

0.2"

174°

2010

Sge

19^h48^m58.65^s / +19°08'31.10"

STF2585

AB-C

5^m.0

9^m.0

8.3"

311°

2016

STF2585

AB-D

5^m.0

11^m.0

76.0"

246°

2005

René Merting Drachhausen (Germany)	100mm (64x)	AB-C: bei 32x noch nichts erkennbar, bei 64x ploppt nordwestlich von Komponente AB ein ganz schwacher Begleiter (Komponente C) auf - gut getrennt die beiden
Christopher Hay Seeheim (Germany)	150mm (96x)	AB-C: Secondary nicely set off as a fine pinprick beside the much brighter primary. Secondary seems ice blue at first sight, but that impression fades the longer I look. Primary essentially colourless. Secondary not seen in 3-inch at 30x. Physical double according to Stelledoppie.
Christopher Hay Seeheim (Germany)	150mm (300x)	AB: Used a moment of unusually good seeing in July 2019 to find out whether anything can be done with the 6-inch on this super-tight pair. No prior PA knowledge. At 200x nothing happening. At 240x a northwest-southeast elongation. At 300x distinctly stretched. According to Stelledoppie a physical pair with a very short period of 23 years. Distance a little over 0.2“ from 2010 to 2020, shrinking to 0.03“ in 2026, reaching 0.2“ again around 2040. This is one of very few double stars whose complete orbit can be observed several times over in a human lifetime, be it only as a periodical elongation/contraction. The observability of the elongation in just 6 inches of aperture is aided greatly by the almost equal brightnesses of the components.
Mark McCarthy Fremont (California/USA)	203mm (667x)	AB-C: White and blue stars, wide three to four delta mag, clean image with 8" [Did not notice elongation is AB, 6.04 and 0.2"]
Mark McCarthy Fremont (California/USA)	317mm (553x)	AB-C: Bright A and 3x fainter wide B. Did not see AB 0.2"

STF2588

A-BC

7^m.7

8^m.1

9.6"

159°

2019

Cyg

19^h49^m00.90^s / +44°22'45.10"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x ein schönes enges Paar nicht mehr ganz knapp getrennt - Komponente B ist nur gering schwächer - beide Sterne strahlen weiß um die Wette - zurück auf 20x ist eine 8 zu sehen
Robert Zebahl Leipzig (Germany)	152mm (30x)	2022-08-07: The double star stands out immediately and is in a nice field of medium bright stars. At 30x very nicely separated with slight difference in brightness. Color difference noticeable: light orange & light blue. At 92x the color impression is similar but with less intense colors.
Mark McCarthy Fremont (California/USA)	317mm (553x)	Near equal white, pretty wide separation.

HJ603, 19 Cyg

5^m.4

10^m.5

56.8"

115°

2015

Cyg

19^h50^m33.99^s / +38°43'20.70"

5^m.4

12^m.6

96.6"

318°

2015

5^m.4

11^m.9

163.8"

309°

2014

10^m.5

13^m.5

20.8"

10°

2015

René Merting

Drachhausen (Germany)

100mm (32x)

bei 32x fällt A sofort als zartgelber Stern auf, B steht gut abgesetzt im SO, sehr schwach sichtbar - bei 64x wird A sattgelb, B ist grau und farblos

HO275, 51 Aql

5^m.4

13^m.6

26.4"

121°

2015

Aql

19^h50^m46.80^s / -10°45'48.90"

Mark McCarthy

Fremont (California/USA)

508mm (410x)

Seeing poor, A appeared as a fuzz ball, but could see a much fainter fuzz ball B start in A's haze ~20" separated to east.

alpha Aql, 53 Aql, Atair, Altair

STFB10

0^m.9

9^m.8

195.8"

286°

2015

Aql

19^h50^m46.99^s / +08°52'05.90"

STFB10

0^m.9

10^m.3

186.4"

110°

2015

DAL27

0^m.9

11^m.9

26.8"

105°

2015

SMR5

0^m.9

11^m.0

151.7"

351°

2019

SMR5

0^m.9

10^m.3

292.4"

48°

2015

GMC5

0^m.9

13^m.0

185.1"

121°

2012

René Merting Drachhausen (Germany)	100mm (32x)	AB: bei 32x ist Komponente B sehr schwach westlich vom buttergelbem Stern Altair erkennbar, weit abgesetzt AC: bei 32x ist C im Osten ebenfalls schwach sichtbar, gleicher Abstand wie AB - alle drei Sterne stehen schön auf einer Linie, aber DS-Feeling eher Fehlanzeige
René Merting Drachhausen (Germany)	320mm (45x)	AB: bei 45x ist Komponente B in großem Abstand westlich vom Stern Altair zu erkennen AC: bei 45x ist auf der gegenüberliegenden Ostseite ein weiterer schwacher Stern sichtbar, der etwas näher zu A steht als B\AF: bei 45x ist in Richtung Nordosten noch ein Stückchen weiter abgesetzt noch ein schwacher Stern zu erkennen, Komponente F - Star des Ensembles ist aber ohne Frage Altair, der herrlich mit vielen Spikes strahlt

STF2587

6^m.7

9^m.4

4.3"

101°

2016

Aql

19^h51^m26.83^s / +04°05'19.10"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Bright orange A star and faint bluish grey B which appears when seeing stills a fine point, ~4.5" [not physical]

ES357

7^m.1

12^m.4

10.1"

309°

2011

Cyg

19^h51^m41.33^s / +31°08'16.10"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Moderately bright, 8th mag, with 3 delta mag B well separated.

STF2590

6^m.5

10^m.3

13.6"

308°

2017

Aql

19^h52^m15.58^s / +10°21'05.80"

6^m.5

12^m.5

115.0"

310°

2015

11^m.6

12^m.2

8.4"

273°

2015

Mark McCarthy Fremont (California/USA)	152mm (175x)	AB: Fairly bright ice-blue A and very faint reddish B, just seen direct, wide. WDS uncertain, there is 19% parallax overlap, 6,246 AU weighted separation, and pretty high stellar mass 4.67/1.80, so might be gravitationally bound
René Merting Drachhausen (Germany)	320mm (45x)	AB: bei 45x ist B gut getrennt nordwestlich von A erkennbar - B ist mindestens 3 Größenklassen schwächer bzw. so schwach, dass der Stern eher wie ein Schatten von A wirkt

A1660

AB-C

10^m.2

10^m.3

0.7"

203°

2018

Aql

19^h52^m53.17^s / +14°25'07.70"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Too tough for this night. Suspect with 205x, @ 333x I have strong sense of elongation but its all a haze, seeing not allow higher magnification. [AB is 0.2"! Very much worth trying with the 20" HD 354044

STF2593

8^m.8

10^m.3

12.1"

244°

2019

Aql

19^h53^m16.93^s / +11°50'04.30"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Almost a delicate pair, >1 delta mag, wide, both light orange. I missed BC, 10.1/11.4 3.7" -- transparency not good enough for fainter stars

AG241

10^m.4

10^m.6

8.6"

217°

2017

Aql

19^h53^m19.36^s / +08°20'24.70"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

Faint pair, one delta, wide. Not physical

STFA48

7^m.1

7^m.3

41.7"

147°

2019

Vul

19^h53^m22.65^s / +20°20'14.10"

René Merting Drachhausen (Germany)	16x70	beide etwa gleich helle Sterne sind gut getrennt, kein Farbunterschied, unspektakulär
René Merting Drachhausen (Germany)	100mm (32x)	bei 32x zwei Sterne mit ordentlich Luft dazwischen - Komponente B südlich knapp schwächer - leichter Farbunterschied, aber nicht wirklich definierbar

★

DJU4, 13 Vul

4^m.6

7^m.4

1.5"

248°

2020

Vul

19^h53^m27.69^s / +24°04'46.60"

Mark McCarthy Fremont (California/USA)	152mm (285x)	Gorgeous! Bright A and 3 delta mag B appears as a fine point just beyond A's diffraction. Seen at 175x, best at 285x. Physical with a 615-year period, at apastron
Frederik Wanink Itterbeck (Germany)	254mm (640x)	schwierig wegen Helligkeitsunterschied

STF2599

7^m.5

9^m.9

3.8"

52°

2016

Vul

19^h53^m38.65^s / +22°59'20.30"

René Merting

Drachhausen (Germany)

100mm (107x)

bei 64x ist nordöstlich vom Hauptstern eine kleine Andeutung erkennbar, ganz schwach und noch nicht getrennt - bei 107x sehe ich den schwachen Begleiter besser, aber zwischen beide Sterne scheint kein Blatt zu passen - nur in guten Momenten sind beide Sterne knapp getrennt zu bewundern

STF2596

7^m.3

8^m.7

2.1"

297°

2016

Aql

19^h54^m01.95^s / +15°17'31.70"

René Merting Drachhausen (Germany)	100mm (107x)	bei 107x ist Komponente B knapp abgesetzt nordwestlich von der A-Komponente sichtbar, knappe Trennung - Helligkeitsunterschied gut 1.5 Größenklassen
Mark McCarthy Fremont (California/USA)	152mm (175x)	Light yellow A and light blue B, nicely separated, very pretty. Physical with a 2971-year period
Mark McCarthy Fremont (California/USA)	203mm (533x)	Orange pair with 2 delta mag companion, about 2", well split.

STF2594, 57 Aql

5^m.7

6^m.3

36.3"

171°

2019

Aql

19^h54^m37.65^s / -08°13'38.30"

René Merting Drachhausen (Germany)	10x50	ein einfacher Doppelstern - schön getrennt - Komponente A strahlt etwas weißer (ich weiß, es gibt keine Steigerungsformen von Farben)
René Merting Drachhausen (Germany)	16x70	ein ansehnliches gut getrenntes Sternpaar - Komponente B im Süden ist gut eine halbe Größenklasse schwächer - das Weiß von Komponente A wirkt etwas kühler, während B eher in einem wärmeren zarten creme-gelb strahlt
René Merting Drachhausen (Germany)	100mm (20x)	bei 32x ein sehr auffälliges, komfortabel getrenntes Sternpaar - Komponente B im Süden ist eine halbe Magnitude schwächer - zurück auf 20x immernoch eine ordentliche Trennung, B wirkt jetzt etwas schmutziger weiß
Uwe Pilz Leipzig (Germany)	105mm (22x)	orange-blau
Uwe Pilz Leipzig (Germany)	320mm (36x)

Berthold Fuchs

Wiesbaden (Germany)

130mm

easy DS

../projects/double-stars/berthold-fuchs/photographs/57%20Aquliae.png

HO581

8^m.0

8^m.7

0.1"

230°

2012

Cyg

19^h54^m58.40^s / +41°52'17.60"

Mark McCarthy

Fremont (California/USA)

508mm (667x)

Very subtly notched elongation at best, light orange stars. 25.63 year period, near apastron in a nearly circular orbit, it will widen slightly in the next 5 years and still be a detectable 0.2" in 2035.

STT390

6^m.6

9^m.5

9.6"

22°

2015

Cyg

19^h55^m06.50^s / +30°11'41.60"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Very wide, 2-3 delta mag.

STT532, bet Aql

3^m.8

11^m.4

13.3"

1°

2016

Aql

19^h55^m18.79^s / +06°24'24.30"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Alshain, the Falcon. Light yellow-orange bright B, B easily seen, wide separation. WDS uncertain, however there is no overlap in parallax range, so not physical

★

STF2605, psi Cyg, 24 Cyg

5^m.0

7^m.5

2.9"

175°

2017

Cyg

19^h55^m37.82^s / +52°26'20.50"

Robert Zebahl Leipzig (Germany)	70mm (100x)	At 80x difficult. At 100x and 133x the fainter component was clearly visible as small, roundish, partly slightly oval brightening.
René Merting Drachhausen (Germany)	100mm (107x)	bei 107x knapp getrennt, A strahlt weiß mit einer schwachen Andeutung von gelb, B im Süden ist deutlich schwächer
Uwe Pilz Leipzig (Germany)	105mm (96x)	nicht schwierig
Uwe Pilz Leipzig (Germany)	105mm (144x)
Mark McCarthy Fremont (California/USA)	317mm (553x)	Yellow and ruddy, fairly wide, ~4" 2 delta mag.

DRS19, 61 Aql, phi Aql

5^m.3

10^m.0

2.9"

185°

2016

Aql

19^h56^m14.23^s / +11°25'25.40"

Robert Zebahl

Leipzig (Germany)

152mm (200x)

2022-09-22: Despite fairly good seeing, the faint companion was not visible. I tried at 200x and 240x.

BU980, eta Cyg

3^m.9

12^m.0

7.2"

206°

2017

Cyg

19^h56^m18.40^s / +35°05'00.60"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Somewhat in glare of A but saw B momentarily with averted vision. Two more faint stars on either side, B closer in. Complicated system, AB AE CE CF. What happened to D?

BLL43

8^m.6

12^m.1

58.4"

16°

2015

Cyg

19^h57^m12.51^s / +44°15'40.20"

Mark McCarthy

Fremont (California/USA)

317mm (553x)

Intense orange color star, very pretty to look at. Orange in the finder. But no pair noticed -- too faint for urban location

BU425

9^m.2

1.4"

240°

2016

Sge

19^h57^m32.28^s / +20°17'40.10"

Mark McCarthy

Fremont (California/USA)

203mm (667x)

Very fine pair, half delta mag, well split a little over 1". [AC & AD wider and fainter, not seen.]

A1663

8^m.9

9^m.2

1.3"

237°

2016

Aql

19^h57^m34.28^s / +15°24'21.50"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Clean split, equal, can see disks with seeing.

STT393

8^m.3

9^m.0

16.5"

232°

2015

Cyg

19^h57^m52.55^s / +44°23'03.10"

René Merting Drachhausen (Germany)	18x70	B steht sehr knapp getrennt südwestlich von A, man muss schon sehr genau hinschauen - Helligkeitsunterschied eine Größenklasse
René Merting Drachhausen (Germany)	100mm (20x)	bei 32x gut getrennt - Komponente A ist weiß-gelb und doppelt so hell wie Komponente B, die weiß-blau dagegen hält - runter auf 20x können beide Sterne auch getrennt werden, sie stehen dann schön eng

BU1475 & HDO155

BU1475

7^m.8

9^m.5

10.4"

113°

2015

Aql

19^h57^m53.70^s / -09°03'30.30"

HDO155

7^m.8

8^m.7

115.1"

119°

2015

BU1475

8^m.7

11^m.1

4.9"

163°

2015

René Merting Drachhausen (Germany)	15x56	HDO155 (AC): ein weit auseinander stehendes Pärchen - Komponente B im Südosten ist halb so hell wie A
René Merting Drachhausen (Germany)	76mm (29x)	BU1475 (AB): bereits bei 29x ist B knapp abgesetzt südöstlich von A erkennbar - A ist schön weiß und B ist im Grunde so schwach (gut 1.5 mag schwächer), dass der Stern kupferbraun strahlt
Uwe Pilz Leipzig (Germany)	320mm (121x)

STT392 & STF2607

STT392

6^m.6

8^m.4

0.1"

184°

1996

Cyg

19^h57^m56.12^s / +42°15'38.90"

STF2607

AB-C

6^m.6

9^m.1

3.0"

289°

2012

René Merting Drachhausen (Germany)	100mm (107x)	STF2607 (AB-C): bei 107x ist C knapp westlich von AB zu erkennen, in guten Momenten sind die Komponenten getrennt sichtbar - trotz des großen Helligkeitsunterschiedes von schätzungsweise 1,5 bis 2 Größenklassen wirkt C ggü. AB auch erstaunlich weißlich
Robert Zebahl Leipzig (Germany)	152mm (92x)	STF2607 (AB-C): 2022-08-07: Clearly separated at 92x, but relatively close pair with noticeable difference in brightness. AB appears yellowish, C brownish. At 171x easy to separate with slightly different color impression: AB appears yellowish, partly light orange, C rather gray-bluish.
Mark McCarthy Fremont (California/USA)	152mm (175x)	STF2607 (AB-C): Pretty light yellow-white A and reddish B, 2 delta mag, around 4". Nice. AB is STT 392 6.60/8.40 0.1", not seen (and only 0.2" at discovery in 1843; physical with a 270-year period). AB-C is uncertain in WDS, but I find the stars do not share parallax ranges, -10%
Mark McCarthy Fremont (California/USA)	317mm (553x)	STF2607 (AB-C): Very close clean split though B is in A's diffraction, somewhat bluish.

BU266

7^m.6

11^m.5

15.8"

166°

2016

Aql

19^h57^m56.15^s / +11°24'53.00"

Mark McCarthy

Fremont (California/USA)

152mm (175x)

B seen with averted vision only, wide. What's cool is that not jus the B star is revealed with averted vision, but the whole field sparkles with more stars with AV! WDS says physical and there is 17% parallax overlap, 2,874 AU weighted separation, and stellar mass 2.29/0.96, so may be gravitationally bound

BU149

10^m.3

12^m.9

8.1"

202°

2015

Sge

19^h58^m05.54^s / +16°29'55.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

B seen easily, C is noticed with averted vision and then can direct. Not physical

AC12

7^m.5

8^m.3

1.6"

298°

2016

Aql

19^h58^m22.77^s / -02°13'54.40"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Very nice light yellow-orange and blue-white stars, 1", 1 delta mag.
Mark McCarthy Fremont (California/USA)	317mm (553x)	Well split, about 1 magnitude difference.

★★

STF2606

7^m.7

8^m.4

0.7"

147°

2018

Cyg

19^h58^m32.66^s / +33°16'38.80"

Frederik Wanink Itterbeck (Germany)	254mm (640x)	sehr schwierig, Luftunruhe
Mark McCarthy Fremont (California/USA)	317mm (553x)	Hair split to clean split when seeing stills and there is only an airy disk. Near equal, half a delta mag. ~0.8"
Mark McCarthy Fremont (California/USA)	508mm (333x)	Close pair 2 delta mag.

STF2609

6^m.7

7^m.6

1.9"

22°

2019

Cyg

19^h58^m34.37^s / +38°06'20.80"

Mark McCarthy Fremont (California/USA)	152mm (175x)	Wide 1 delta mag. WDS is uncertain, 3% parallax range overlap, 660 AU weighted separation, 3.81/3.01 stellar mass -- maybe
Mark McCarthy Fremont (California/USA)	152mm (175x)	Beautiful ice-blue A and yellow B, 1 delta mag, about 3" separation. Spectral class B5IV (blue-white). 3% parallax range overlap, 660 AU weighted separation, 3.81/3.01 solar mass, so maybe gravitational
Mark McCarthy Fremont (California/USA)	508mm (333x)	Cleanly split

STF2611

8^m.5

5.2"

208°

2020

Cyg

19^h58^m51.90^s / +47°21'48.20"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x sind beide Sterne dicht zusammen stehend erkennbar, nur in ruhigen Momenten gelingt die Trennung - bei 64x ist die Trennung dann eindeutig, beide Sterne sind gleich hell und weiß
Mark McCarthy Fremont (California/USA)	317mm (553x)	Equal yellow, wide.

STF2610

8^m.8

9^m.2

4.3"

296°

2019

Cyg

19^h59^m07.47^s / +35°32'10.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Wide, white, near equal. Not physical

A378

8^m.5

9^m.0

1.0"

294°

2016

Cyg

19^h59^m22.02^s / +32°06'28.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Excellent near equal split, light orange stars. Spectral class G5 (yellow). WDS 591-year period, and it appears to be starting to make a rapid closure to periastron by 2060. There is 37% parallax range overlap, 139 AU weighted separation, and 1.84/1.56 solar mass

★

BU1133

6^m.7

9^m.9

1.1"

342°

1991

Cyg

19^h59^m39.13^s / +31°49'35.40"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Tough find, dense field. Very temporary brightening in diffraction, 20% held. This is a tough one, <1" and large delta mag.
Mark McCarthy Fremont (California/USA)	508mm (445x)	B glimpsed with seeing at 445x, a solid point in some flaring from A. Suspected at 333x. WDS says physical, and unfortunately there is no parallax data on the companion. Burnham discovered on the Lick 36-inch at 0.9"

A379

7^m.6

11^m.1

2.6"

227°

1991

Cyg

19^h59^m41.80^s / +30°54'50.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very nice, White A holding a steady disk, and faint B is nicely separated, <3", around 4 delta mag. WDS says not physical, and there is no parallax data on the companion

HJ1462

7^m.5

9^m.9

37.2"

24°

2015

Vul

20^h00^m06.57^s / +25°57'00.00"

René Merting

Drachhausen (Germany)

76mm (29x)

bei 29x zeigt sich die A-Komponente auffällig warmweißgelblich strahlend, B präsentiert sich in gutem Abstand und deutlich schwächer (mind. 2 Größenklassen) - ein schöner Farbkontrast zwischen beiden Sternen

13 Sge

H4 100

10^m.0

10^m.1

23.9"

265°

2013

Sge

20^h00^m10.43^s / +17°30'09.10"

H4 100

10^m.0

5^m.6

112.6"

297°

2013

BU1477

5^m.6

13^m.4

27.0"

208°

2013

BU1477

5^m.6

13^m.0

45.9"

114°

2020

John Raymond

Richmond (Virginia/USA)

★

STT394

7^m.1

10^m.3

11.0"

294°

2016

Cyg

20^h00^m11.43^s / +36°24'50.80"

Mark McCarthy Fremont (California/USA)	152mm (175x)	Light orange A and a faint wide companion. WDS calls it physical, no data for B in Gaia
Mark McCarthy Fremont (California/USA)	152mm (245x)	White star among several fainter stars, none which strike one as being the pair. WDS is calling it physical, and they might be right: 28% parallax range overlap, 2,011 AU weighted separation, 2.77/1.22 solar mass
Mark McCarthy Fremont (California/USA)	317mm (553x)	Pretty orange and blue, well separated, 2 delta mag.
Mark McCarthy Fremont (California/USA)	508mm (205x)	Wide, 3 delta mag light yellow A and blue B, pretty. WDS says physical, and there is 28% overlap in their parallax ranges, 2,011 AU weighted separation, 2.77/1.22 Msun, so possible it is gravitational

BU1258

7^m.5

10^m.9

1.4"

143°

2015

Cyg

20^h00^m15.54^s / +29°55'14.30"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Very fine, 3 delta mag, 2" separation, white A and dull yellow B. WDS uncertain, and there is no parallax data for the companion. Burnham discovered on the Lick 36-inch at 1.5" while attempting to measure BU 439

A719

9^m.9

10^m.4

3.0"

109°

2018

Cyg

20^h00^m16.61^s / +46°20'19.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Well split, noticeably unequal stars, A is light orange. WDS uncertain, however there is no overlap in their parallax ranges, -34%

BU439

7^m.9

12^m.7

3.3"

222°

2016

Cyg

20^h00^m46.25^s / +29°49'19.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Not easy, I can just see B with direct vision, very faint and rather closely split to light yellow A. WDS uncertain, and unfortunately there is no parallax range overlap, -52%. Burnham discovered with the Dearborn 18.5-inch

L32

10^m.8

11^m.0

3.3"

129°

2018

Cyg

20^h00^m59.11^s / +29°55'30.90"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Near equal, well split, seems double... rich field with many other wide type pairs. WDS says not physical, and there is no overlap (-64%) of the parallax ranges

BU1289

8^m.2

9^m.2

0.7"

55°

2016

Cyg

20^h00^m59.61^s / +37°41'56.10"

8^m.2

9^m.7

21.5"

90°

2018

René Merting

Drachhausen (Germany)

100mm (32x)

AC: bei 32x sind zwei Sterne weit getrennt voneinander erkennbar - Komponente C im Osten ist relativ schwach bzw. gut 1.5 Größenklassen schwächer als A

STF2619

8^m.9

4.0"

239°

2020

Cyg

20^h01^m01.69^s / +48°15'28.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Pale yellow-white stars, well split, near equal. Several other wider pairs. WDS says physical. My calculator says there is a -1% parallax range overlap, but all the upper and lower limits are 54 parsecs, and there is only 226 AU weighted separation with 0.99/0.98 Msun, so this very possibly is gravitational

H5 47, 26 Cyg

5^m.2

8^m.9

41.8"

150°

2018

Cyg

20^h01^m21.55^s / +50°06'16.80"

5^m.2

11^m.1

168.3"

343°

2012

8^m.9

12^m.9

8.8"

76°

2015

8^m.9

15^m.8

9.4"

258°

2015

René Merting

Drachhausen (Germany)

100mm (20x)

AB: bei 20x ein weit getrenntes Pärchen mit schönem Farbkontrast - Komponente A im NW ist cremegelb, Komponente B ist mindestens 3 Größenklassen schwächer und zeigt sich weißgrau

STF2612

8^m.3

9^m.9

42.5"

54°

2016

Aql

20^h01^m23.22^s / +06°56'49.70"

9^m.9

12^m.3

26.9"

41°

2016

René Merting

Drachhausen (Germany)

100mm (20x)

AB: bei 32x weit getrenntes Pärchen - Komponente A im Westen ist schwach und weiß, B ist kupfer-braun bis kupfer-rot und eine halbe Größenklasse schwächer (im Nachgang habe ich festgestellt, dass ich mit meiner Helligkeitseinschätzung deutlich abgewichen bin, der Helligkeitsunterschied beträgt 1.6 mag) - 20x reicht auch völlig für die Trennung, B ist dann nur schwächer und der Farbeindruck schwächer

STF2613

7^m.5

8^m.0

3.5"

354°

2020

Aql

20^h01^m26.66^s / +10°44'54.80"

René Merting Drachhausen (Germany)	100mm (64x)	64x reicht für die Trennung, dann stehen die beiden Sterne aber noch sehr dicht - beide mit gleicher Helligkeit und strahlend weiß - schick
Mark McCarthy Fremont (California/USA)	152mm (175x)	Lovely near equal white stars, good split. Physical with 2106-year period
Mark McCarthy Fremont (California/USA)	152mm (285x)	White, ~1 delta mag, nice wide split

STTA196

7^m.3

9^m.3

53.7"

169°

2015

Cyg

20^h01^m51.46^s / +40°51'31.70"

7^m.3

12^m.3

137.0"

132°

2015

René Merting

Drachhausen (Germany)

100mm (20x)

AB: bei 20x stehen beide Sterne weit auseinander - Komponente B im SO ist mindestens 2 Größenklassen schwächer - Farbkontrast durch Helligkeitsunterschied

AG245

8^m.7

10^m.2

16.7"

21°

2015

Cyg

20^h01^m52.19^s / +31°39'12.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Easy, very wide, two delta. WDS uncertain, but there is no parallax range overlap (-78%)

STT395, 16 Vul

5^m.8

6^m.2

0.7"

129°

2020

Vul

20^h02^m01.45^s / +24°56'16.80"

Mark McCarthy Fremont (California/USA)	152mm (456x)	Slightly unequal snowman at all powers. Notching increases in strength with increasing power. Physical with 1201-year period
Mark McCarthy Fremont (California/USA)	203mm (667x)	16 Vul. Hairline split at 8" 333x. At 667x I see a more definite split. It appears only half delta mag, rather than the 1 delta mag in Sky Tools. Nice star.
Frederik Wanink Itterbeck (Germany)	254mm (640x)	fast getrennt, eher 8, ähnlich hell

Frederik Wanink

Itterbeck (Germany)

254mm

../projects/double-stars/frederik-wanink/photographs/16%20Vul.jpg

BU426

8^m.5

10^m.5

5.9"

307°

2016

Cyg

20^h02^m07.92^s / +54°38'28.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Part of a neat double-double with BU 427 CD, all of which Burnham discovered with the 6-inch. Equilateral triangle of equal magnitude stars, two of which are doubles which look very similar, both with 2 delta mag companions but one with twice (BU 426) the still close separation as the other (BU 427). Their PAs are about 45-degrees different, each pointed away from the third star in the triangle which unfortunately is not double. WDS says this one is not physical, but they're wrong: 44% parallax range overlap, 995 AU weighted separation, 1.94/1.20 Msun -- points to gravitational. If they rejected based on proper motion they may not have considered the direction of the orbit

BU427

8^m.4

10^m.2

3.1"

336°

2011

Cyg

20^h02^m22.85^s / +54°40'07.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Double-double with BU 426. WDS says not physical, and there is -16% parallax range overlap, so it is not (and the radial velocity delta exceeds the escape velocity anyway)

HO117

10^m.4

11^m.7

5.2"

314°

2016

Cyg

20^h02^m29.65^s / +33°40'56.50"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Unequal, wide, 1 delta. WDS uncertain, but it may well be gravitational: 27% parallax range overlap, 1,284 AU weighted separation, 1.46/1.06 solar mass

STF2616

6^m.8

9^m.6

3.4"

268°

2016

Aql

20^h02^m46.04^s / +14°34'57.70"

René Merting Drachhausen (Germany)	100mm (107x)	bei 107x blitzt B immer westlich von A in dessen Glanz auf, B wirkt mehr wie ein schwacher grauer kompakter Schatten - bei 142x ist mit etwas Geduld B leicht abgesetzt von der gut 3 Magnituden heller geschätzten Komponente A erkennbar
Mark McCarthy Fremont (California/USA)	203mm (533x)	Pretty orange and blue pair, well separated about 2 delta mag. B very faint in 8", but know is there. With 20" easily seen as a brighter star. Nice pair

STF2615

7^m.6

10^m.3

8.9"

301°

2015

Aql

20^h02^m54.05^s / +08°23'50.70"

Mark McCarthy

Fremont (California/USA)

203mm (205x)

White A and much fainter reddish B, wide. Not physical

HO454

7^m.5

11^m.4

5.9"

53°

2015

Cyg

20^h03^m13.50^s / +50°27'53.70"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

B visible with averted vision, wide, 4 delta mag. WDS says physical, and there is 0% overlap in their parallax ranges, 1,295 AU weighted separation, and 2.51/1.05 Msun, so could be gravitational

STT396

6^m.1

10^m.4

46.6"

208°

2015

Sge

20^h03^m16.40^s / +18°30'03.60"

Mark McCarthy

Fremont (California/USA)

178mm (205x)

Light orange and super-wide B. Not physical

STF2618

9^m.4

9^m.8

5.6"

115°

2018

Aql

20^h03^m26.98^s / +15°28'14.40"

Mark McCarthy

Fremont (California/USA)

203mm (533x)

Near equal, whiteish blue stars, wide. Nice

STF2624

7^m.1

7^m.7

1.9"

174°

2018

Cyg

20^h03^m29.42^s / +36°01'28.60"

7^m.1

9^m.3

42.3"

327°

2018

7^m.1

12^m.9

29.0"

171°

2018

7^m.7

9^m.3

44.7"

328°

2018

Robert Zebahl Leipzig (Germany)	63mm (120x)	AB: 2021-08-15: At magnifications from 120x to 168x the double star appears clearly as an '8'. The diffraction disks still overlap slightly. The moderate brightness difference is visible.
Robert Zebahl Leipzig (Germany)	70mm (133x)	2021-08-15: The pair AB appears separated but very tight with almost touching diffraction disks. A moderate difference in brightness is visible. The fainter component C is clearly more separated. A, B & C form an obtuse triangle.
René Merting Drachhausen (Germany)	100mm (32x)	AC: bei 32x ist Komponente C in weitem Abstand von A erkennbar und bestimmt 2.5 bis 3 Größenklassen schwächer - Komponente B (7.73 mag / Sep. 2"/ P.A. 328°) habe ich wohl übersehen, weil nicht höher vergrößert, schade
Mark McCarthy Fremont (California/USA)	152mm (175x)	AB: Very slightly unequal magnitude, close white stars. WDS uncertain, but there is 22% overlap and a rather wide 4,020 AU weighted separation, and very high stellar mass 8.58/7.70 -- so maybe
Mark McCarthy Fremont (California/USA)	317mm (277x)	AB: A with 2x fainter B well separated, plus an arc of 3 stars. (4 stars in system, AB AC AD BC)

HJ1470

7^m.4

9^m.2

29.3"

341°

2016

Cyg

20^h03^m39.50^s / +38°19'38.30"

René Merting Drachhausen (Germany)	100mm (20x)	bei 20x weit getrenntes Pärchen - Komponente B im NW ist nur schwach erkennbar - bei 32x Farbkontrast weiß/grau
Mark McCarthy Fremont (California/USA)	508mm (333x)	Pretty yellow & blue pair, wide separation. Alberio-like

A1194

9^m.5

9^m.7

1.1"

317°

2016

Aql

20^h03^m59.56^s / +12°21'23.80"

Mark McCarthy

Fremont (California/USA)

203mm (533x)

Near equal bluish-white (seems nearly all 9th magnitude stars appear bluish white in my 8"). Cleanly split with seeing, 1".

15 Sge

STT592

5^m.9

9^m.5

163.2"

291°

2015

Sge

20^h04^m06.22^s / +17°04'12.60"

STT592

5^m.9

6^m.9

217.0"

335°

2015

BUP202

5^m.9

11^m.3

89.1"

3°

2015

BUP202

5^m.9

11^m.8

175.0"

51°

2013

BUP202

5^m.9

12^m.3

142.4"

315°

2015

SMR20

5^m.9

11^m.1

132.1"

129°

2015

TNN14

4^m.4

13^m.5

3.3"

283°

2004

TNN14

4^m.4

12^m.4

6.2"

162°

2004

TNN14

4^m.4

13^m.0

9.3"

140°

2004

STTA202

9^m.5

9^m.0

181.4"

230°

2015

BUP202

6^m.9

12^m.3

95.6"

185°

2015

John Raymond

Richmond (Virginia/USA)

STF2622

8^m.7

9^m.5

6.0"

193°

2018

Sge

20^h04^m08.99^s / +17°00'02.90"

Mark McCarthy

Fremont (California/USA)

203mm (333x)

Well separated half delta mag. Part of 2 plus one system [AC 11.7 & 17.1". Ba,Bb is 10th mag & 0.2"]

STF2620, V1470 Aql

8^m.2

9^m.2

1.9"

287°

2016

Aql

20^h04^m09.25^s / +11°47'40.30"

Mark McCarthy

Fremont (California/USA)

203mm (533x)

Almost 2 delta mag, ~1.5" easily split pair, nice. [Eclipsing binary]

COU325

9^m.4

10^m.9

0.8"

226°

2010

Sge

20^h04^m22.33^s / +17°14'33.00"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Very finely split with 333x, large delta mag, delicate pair

A1413

10^m.0

10^m.6

2.4"

139°

2017

Cyg

20^h04^m34.48^s / +36°40'49.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Pretty tough in a dense field of faint stars, closely separated and 1 delta mag. WDS uncertain, but it is likely gravitational: 78% parallax range overlap, 1,376 AU weighted separation, 2.46/1.99 Msun

STF2621

8^m.4

8^m.6

5.7"

224°

2017

Aql

20^h04^m34.52^s / +09°14'24.20"

René Merting Drachhausen (Germany)	100mm (32x)	bei 32x knapp getrennt, da passt maximal eine Lage 80g-Papier dazwischen - bei 64x ein schönes enges Pärchen, etwas besser getrennt - beide Sterne annähernd gleichhell, Komponente B müsste der Stern im NW sein - A reinweiß, B auch mit einem Stich ins grau
Mark McCarthy Fremont (California/USA)	203mm (533x)	More equal than SkyTools data shows, one is orange and the other blue. Maybe the orange star is variable. Wide separation, another nice pair

STT397

7^m.4

9^m.6

46.1"

179°

2016

Aql

20^h04^m46.86^s / +15°54'11.30"

René Merting

Drachhausen (Germany)

100mm (20x)

bei 32x ein weit getrenntes Pärchen - Komponente B im Süden ist deutlich schwächer und hat kaum Farbe - zurück auf 20x sind beide Sterne noch immer gut getrennt sichtbar, Komponente B ist mit etwas Konzentration knapp sichtbar

BU56

8^m.0

9^m.1

1.3"

189°

2016

Aql

20^h05^m07.26^s / -04°18'29.30"

Mark McCarthy Fremont (California/USA)	317mm (553x)	Orange and blue. <1", 1 delta mag.
René Merting Drachhausen (Germany)	320mm (320x)	bei 320x ist in ruhigen Momenten eine 8 erkennbar - Komponente b ist deutlich schwächer als A - noch höher Vergrößern brachte keinen Gewinn bei diesem Seeing (>2")

BU1481

6^m.2

13^m.2

42.7"

240°

2015

Cyg

20^h05^m09.78^s / +38°28'42.40"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Faint and very wide i wonder at the interest, proper motions? WDS says not physical

BU1480

9^m.2

11^m.4

8.2"

328°

2015

Cyg

20^h05^m09.84^s / +38°57'06.10"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

White A and 2 delta B, well separated. WDS says not physical, and I can't find the companion in Gaia

COU1806

10^m.6

1.2"

287°

2016

Cyg

20^h05^m18.16^s / +33°07'00.90"

Mark McCarthy

Fremont (California/USA)

508mm (333x)

Excellent near equal pair, faint and very close, split with 205x, wider with 333x. WDS uncertain, and there is no parallax range overlap (-25%)

BU57

6^m.6

11^m.0

2.6"

118°

2016

Aql

20^h05^m26.53^s / +15°30'01.30"

Mark McCarthy

Fremont (California/USA)

203mm (533x)

V1472 Aql. At 8" the B appears as a suspected brightening in the diffraction, whitish to the A star's orange. At 20" the B star is obvious and blue a nice sharp point ~2.5"

SHJ316

7^m.8

8^m.8

69.4"

323°

2018

Cyg

20^h05^m39.80^s / +35°36'28.10"

René Merting

Drachhausen (Germany)

100mm (64x)

bei 64x ist der kleine Begleiter indirekt zu erkennen, beide sind getrennt sichtbar - schön in Kombination mit dem Mini-W (Asterismus Alessi J0022.7+5417)

ES498

8^m.9

12^m.5

8.3"

309°

2015

Cyg

20^h05^m42.33^s / +30°19'39.30"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

Like many Espins, this B star needed averted vision to show itself. Very faint, wide. WDS uncertain, but there is no parallax range overlap (-97%)

A1197

9^m.9

10^m.1

0.8"

331°

2017

Cyg

20^h05^m50.59^s / +29°46'04.90"

Mark McCarthy

Fremont (California/USA)

508mm (445x)

Nice light orange stars at the tip of a triangle of similar mag stars, split with 333x with seeing, wider with 445x, noticeably unequal. WDS uncertain, and surprisingly no parallax range overlap, -59%

★★

SHJ314, V1676 Cyg

6^m.8

9^m.5

11.3"

300°

2019

Cyg

20^h05^m57.32^s / +35°47'18.20"

6^m.8

7^m.3

36.3"

28°

2019

René Merting Drachhausen (Germany)	100mm (32x)	AD: bei 32x ist westlich von A knapp getrennt ein sehr schwacher Lichtpunkt erkennbar - mindestens 3 Größenklassen Helligkeitsunterschied zwischen A und D - zurück auf 20x sind beide Sterne auch noch ganz knapp getrennt erkennbar AF: bei 32x sind zwei weit auseinander stehende Sterne erkennbar, Komponente F im NO ist nur unwesentlich schwächer und strahlt nicht ganz so klar wie A
Uwe Pilz Leipzig (Germany)	105mm (144x)	liegt gemeinsam mit SHJ 315 im OC NGC 6871. Die Zeichnung des gesamten Haufens enthält nur die hellsten Sterne.

BU440, V1676 Cyg

6^m.8

12^m.0

6.9"

63°

2015

Cyg

20^h05^m57.32^s / +35°47'18.20"

Mark McCarthy

Fremont (California/USA)

508mm (205x)

In a busy open cluster

ES25 & SHJ315 & WAL127 & SEI865

ES25

7^m.9

12^m