Double Stars - R.A. 12h-18h

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:
Double/Multiple Stars 469
Visual Observations 752
Sketches 54
Photographs 29
Observers 11
Berthold Fuchs, Christopher Hay, Jens Leich, Stefan Loibl, Mark McCarthy, Rene Merting, Uwe Pilz, John Raymond, Joerg S. Schlimmer, Frederik Wanink, Robert Zebahl
m1 m2 ρ θ Year Coordinates (J2000)
STF1583 8.1 9.3 11.3'' 284° 2015 UMi 12h00m10.43s +86°59'40.00"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x ein kleines feines schön eng stehendes Sternpaar - Komponente A ist weiß und die Komponente B schmiegt sich grau-weiß an - Helligkeitsunterschied gut 1,5 Magnituden
STF1596, 2 Com 6.2 7.5 3.7'' 236° 2017 Com 12h04m16.60s +21°27'33.00"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Yellow-white A, 2 delta mag B. Pretty wide.
STF1600 7.6 8.3 7.8'' 94° 2015 UMa 12h05m34.42s +51°55'52.20"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Pretty orange and blue pair, 8-9 mag, 1.5 delta mag, wide separation ~10"
HU1136 6.3 10.2 1.9'' 217° 1992 UMa 12h05m39.70s +62°55'59.30"
Mark McCarthy
Fremont (California/USA)
317mm (885x) Tried real hard, up to 885x, but can't say I have it. Thought I had a condensation in the diffraction when seeing settled but not consistent and not a point.
S634 7.2 8.8 4.7'' 302° 2017 Crv 12h11m22.93s -16°47'27.10"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Pair of orange stars of equal magnitude widely separated at either end of the FOV. There are two faint blue pairs closer in to one of these. (The orange and the blue are the pair, though it's a surprise since the two orange stars look identical, may have formed together?)
STF1607 AB 8.9 9.8 26.7'' 28° 2017 CVn 12h11m33.63s +36°05'21.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide split, 0.5 delta mag.
STF1609 AB 8.0 9.6 11.1'' 205° 2015 UMa 12h11m41.76s +50°50'15.80"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Orange and blue, 2 delta mag, pretty.
STF1613 9.3 9.4 1.2'' 2017 CVn 12h12m34.01s +35°45'45.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very tight equal white, splits clean with the seeing
STF1618 9.5 9.5 26.0'' 245° 2015 Vir 12h15m03.46s +09°59'27.10"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1618.png
A1781 10.2 11.0 2.9'' 303° 2017 CVn 12h16m19.33s +44°43'25.90"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Very fine faint pair, 1 delta mag, ~3"
STF1626 9.4 9.6 2.1'' 2017 Dra 12h16m47.11s +70°08'45.70"
Robert Zebahl
Leipzig (Germany)
120mm (150x) Components similar in brightness, pretty faint, close together, but clearly split.
STT245 5.7 11.2 8.4'' 282° 2016 Com 12h17m30.60s +28°56'13.60"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Yellow-white A with very faint B due west, wide separation.
STF1628 AB 9.5 10.1 9.6'' 240° 2015 Vir 12h18m42.90s +11°47'46.30"
AC 9.5 11.8 45.1'' 345° 2015
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1628.png
STF1630 9.5 10.3 2.5'' 171° 2017 UMa 12h18m53.81s +56°22'06.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) ~2", half a delta mag, faint pair, nice.
BU27 7.1 10.5 3.6'' 104° 2015 Com 12h20m04.86s +13°51'18.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Light orange A and very faint bluish B, seen with averted vision at first then can hold direct. ~4" to west. Nice!
STF1633 7.0 7.1 8.9'' 245° 2017 Com 12h20m41.37s +27°03'16.40"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Yellow-white, equal brightness, wide separation to NE.
SHJ143, 12 Com AC 4.9 8.9 59.0'' 168° 2012 Com 12h22m30.32s +25°50'46.30"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Wide separation white and bluish, 3 delta mag. I feel like there is a fainter star closer in and 90 degrees PA from the B star. [AB is the fainter pair, 4.86/11.8 36.7", AC is the main pair described.]
Mark McCarthy
Fremont (California/USA)
203mm (205x) Wide separation white and bluish, 3 delta mag. Feel like there is a fainter star closer in and 90 degrees PA from the companion star (this is AB).
STF1636, 17 Vir 6.5 9.3 21.0'' 338° 2017 Vir 12h22m32.14s +05°18'20.10"
Mark McCarthy
Fremont (California/USA)
317mm (340x) 17 Virginis, widely separated, large magnitude difference, with a yellow-white A and a ruddy / brownish B
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1636.png
STT249 AB 8.2 9.2 0.4'' 263° 2011 UMa 12h23m50.80s +54°09'30.50"
Mark McCarthy
Fremont (California/USA)
317mm (738x) very slightly notched elongation / overlapped disks.
STF1639 AB 6.7 7.8 1.9'' 324° 2017 Com 12h24m26.81s +25°34'56.70"
Mark McCarthy
Fremont (California/USA)
203mm (205x) White and slightly blue pair, close, around 3"
Mark McCarthy
Fremont (California/USA)
203mm (205x) White and slightly blue pair, close, around 3"?
Mark McCarthy
Fremont (California/USA)
317mm (443x) Close but well split, 1.5 delta mag, ~2.5"
STF1642 8.8 9.4 2.5'' 180° 2017 CVn 12h25m45.00s +44°44'04.40"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Very nice light orange and blue, 1 delta mag, ~3"
STF1643 AB 9.0 9.4 2.7'' 2017 Com 12h27m13.72s +27°01'29.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Equal orange pair, ~3", PA to north.
STF1645 7.5 8.1 9.8'' 156° 2017 CVn 12h28m04.45s +44°47'39.50"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Wide, bright yellowish-white pair, ~1 delta mag
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1645.png
STF1646 10.3 12.9 5.6'' 260° 2017 CVn 12h28m09.12s +36°41'02.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow and blue. Need averted vision for B to reveal itself. Pretty!
STT251 8.3 9.3 0.8'' 61° 2017 CVn 12h29m07.72s +31°23'25.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Decidedly not round disk -- there's also a brightening in the diffraction. Marginal.
SHJ145, delta Crv, 7 Crv, Algorab AB 3.0 8.5 24.0'' 215° 2015 Crv 12h29m51.86s -16°30'55.60"
Robert Zebahl
Leipzig (Germany)
70mm (47x) Large difference in brightness and pretty wide apart. Primary component appeared white-bluish. The B component was too faint for seeing colors.
HJL1069 7.8 10.1 115.4'' 312° 2015 Com 12h30m19.91s +21°56'53.60"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Lovely wide pair, 2.5 delta mag. Clean image
Mark McCarthy
Fremont (California/USA)
203mm (205x) Lovely wide pair, 2.5 delta mag.
J1023 11.1 11.3 5.2'' 173° 2015 CVn 12h30m46.44s +36°39'34.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Excessively faint, averted vision required to pick out, well separated.
★★★ SHJ146 AB 7.7 8.7 49.5'' 290° 2017 Vir 12h31m14.61s +01°19'37.00"
Robert Zebahl
Leipzig (Germany)
70mm (33x) Visible difference in brightness and color. I couldn't precisely define the colors itself, but A appeared rather orange, B rather bluish.
Robert Zebahl
Leipzig (Germany)
102mm (28x) Pretty wide pair with visible difference in brightness and lovely color contrast. A: pale orange, B: light blue.
STF1652 10.1 10.4 6.1'' 178° 2017 Com 12h32m31.07s +21°06'03.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint near equal, pretty wide 5-6".
STF1653 9.7 9.7 8.0'' 343° 2017 CVn 12h33m22.34s +32°02'23.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Easy, near equal pair, yellowish A and bluish B. ~10"
STF1657, 24 Com 5.1 6.3 20.2'' 271° 2018 Com 12h35m07.76s +18°22'37.40"
Robert Zebahl
Leipzig (Germany)
102mm (28x) Very beautiful view with moderate distance and difference in brightness. A: glossy, light orange, B: white- bluish.
Robert Zebahl
Leipzig (Germany)
200mm (60x) Well split with obvious difference in brightness. Fainter component appeared bluish, the brighter one slightly orange.
Mark McCarthy
Fremont (California/USA)
203mm (205x) Very pretty bright light orange and fainter blue, wide separation. Such a sight!
Mark McCarthy
Fremont (California/USA)
203mm (205x) COM 24. Very pretty bright light orange and fainter blue, wide separation.
Mark McCarthy
Fremont (California/USA)
317mm (443x) 24 Com. Pretty orange and blue pair, 2 delta mag, very wide
★★★ STF1670, gamma Vir, 29 Vir, Porrima AB 3.5 3.5 2.7'' 2018 Vir 12h41m39.60s -01°26'57.90"
Robert Zebahl
Leipzig (Germany)
55mm (56x) 2019-05-18: At 38x slightly elongated. At 56x touching diffraction disks. At 71x clearly separated with very small gap.
Robert Zebahl
Leipzig (Germany)
70mm (104x) 2019-05-04: At 47x clearly visible as '8', at 73x split with almost touching diffraction disks. At 104x clearly separated, equally bright and pretty close together. The gap was smaller than the diameter of the diffraction disk.
Robert Zebahl
Leipzig (Germany)
102mm (125x) 2019-05-01: Extremely nice double star! Equally bright and relatively close together. Both components appeared yellowish-white.
Uwe Pilz
Leipzig (Germany)
105mm (200x) weiß-weiß, die nördliche Komponente ist eine Winzigkeit heller
Mark McCarthy
Fremont (California/USA)
317mm (170x) Porrima. Very pretty yellow-white, near equal, close split at 170x. Star disks improved with apodizing mask.
HO256 7.3 9.6 0.7'' 116° 2001 CVn 12h44m08.82s +35°46'07.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) The airy disk is not clean indicating it's not single, but can't split for the seeing. Marginal
STF1678 7.2 7.7 37.7'' 170° 2018 Com 12h45m26.17s +14°22'24.90"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Wide separation near equal white pair
STF1679 AB 9.6 10.0 5.9'' 208° 2017 CVn 12h46m00.83s +49°49'23.00"
AC 9.6 13.7 69.1'' 37° 2015
Mark McCarthy
Fremont (California/USA)
317mm (277x) AB: Fairly faint equal magnitude, 3"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1679.png
STF1694 AB 5.3 5.7 21.8'' 324° 2017 Cam 12h49m13.80s +83°24'46.30"
Robert Zebahl
Leipzig (Germany)
70mm (15x) Easy to split with noticeable angular distance and slight difference in brightness. The faint component tends to be more bluish, the brighter one appeared more light yellowish.
Rene Merting
Drachhausen (Germany)
100mm (32x) beide Komponenten strahlen richtig hell und gut getrennt - leichter Farbkontrast, Komponente A ist leicht gelblich, B wirkt eher unterkühlt
STF1681 8.9 8.9 9.2'' 17° 2016 Vir 12h49m34.82s +03°49'05.60"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1681.png
STF1685 AB 7.3 7.8 15.8'' 200° 2015 Com 12h51m54.80s +19°10'19.90"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Wide white pair, 1 delta mag
Mark McCarthy
Fremont (California/USA)
317mm (553x) Brighter white A, 0.5 delta mag B, pretty wide separation.
STF1686 AB 8.6 8.7 5.7'' 187° 2015 Com 12h52m58.16s +15°01'53.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Fine near equal pair of yellow-white stars, wide separation, PA to south.
STF1687, 35 Com AC 5.2 9.8 28.5'' 127° 2016 Com 12h53m17.77s +21°14'42.10"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Rich light yellow and much fainter wide blue B. Near M64. [Need to re-observe. I saw the wide AC, but not the AB which is 5.15/7.08 1.2"
Mark McCarthy
Fremont (California/USA)
317mm (205x) Rich light yellow and much fainter wide blue B. Near M64. (Need to re-observe. I saw the wide AC, but not the AB which is 5.15/7.08 1.2")
Mark McCarthy
Fremont (California/USA)
317mm (443x) Orange and blue, 3 delta mag, very wide separation to the east. Did not notice AB
STF1687, 35 Com AB 5.2 7.1 1.2'' 200° 2018 Com 12h53m17.77s +21°14'42.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 35 Com: Bright orange & fainter B, showpiece, ~1.5"
STF1688 AB 9.2 11.1 14.4'' 344° 2015 CVn 12h53m35.26s +37°58'20.90"
Mark McCarthy
Fremont (California/USA)
317mm (71x) a faint pair, yellow A and orangish B, which I identified using 340x, but can still split at 71x with STF 1692 & STF 1702 in the same low power field
MET9 5.7 7.8 1.7'' 51° 2013 Com 12h54m39.98s +22°06'28.80"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Using 8" 205x I see nothing. 8" 410x suspect elongation. 8" 667x I see a fleeting, bluish point just outside of first diffraction ring. A is light yellow orange and bright, 2 delta mag. to B. A star feels elongated / egg shaped. With 20" and 667x the seeing is too messy though there is a knot in the diffraction where I had noticed the point with 8". Strong feeling A is elongated.
Mark McCarthy
Fremont (California/USA)
203mm (667x) At 205x see nothing. 410x suspect elongation. 667x see a fleeting, bluish point just outside of first diffraction ring. A is light yellow orange and bright, 2 delta mag. to B. A feels elongated / egg shaped. At 20" and 667x the seeing is too messy though there is a knot in the diffraction where I had noticed the point with 8". Strong feeling A is elongated.
STF1689 7.1 9.1 30.2'' 223° 2015 Vir 12h55m30.32s +11°29'46.40"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Orange and blue, very wide separation
★★ STF1692, 12 CVn, alpha CVn, Cor Caroli AB 2.9 5.5 19.3'' 229° 2017 CVn 12h56m01.67s +38°19'06.20"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Beautiful view. Clearly unequal with nice angular distance. Primary component appeared in pale yellow, secondary component silvery-white.
Uwe Pilz
Leipzig (Germany)
105mm (66x) blauweiß-orange, trennbar bei 16x
Uwe Pilz
Leipzig (Germany)
105mm (200x) schon bei 26x getrennt ../projects/doublestars/uwe_pilz/sketches/CorCaroli.jpg
Robert Zebahl
Leipzig (Germany)
114mm (28x) Well split with big difference in brightness.
Mark McCarthy
Fremont (California/USA)
203mm (205x) Cream white and light canary yellow. Well separated, 2 delta mag.
Mark McCarthy
Fremont (California/USA)
203mm (205x) Cor Caroli: Cream white and light canary yellow. Well separated, 2 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (71x) Cor Caroli. Cream and bluish, use low power to fit STF 1688 & STF 1702 in the same field.
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1692.png
STT256 7.3 7.6 1.1'' 101° 2017 Vir 12h56m26.59s -00°57'16.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide separation equal brightness white stars
BU925 7.0 11.1 6.5'' 209° 2016 CVn 12h56m38.81s +43°33'07.20"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Bright white and extremely faint B, wide separation. B flashes with averted vision to see, can hold with direct vision with seeing
STT257 8.5 9.6 13.0'' 353° 2017 CVn 12h56m44.77s +45°36'45.10"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Wide white and dull blue-white pair.
STF1696 9.4 9.5 3.7'' 204° 2017 Com 12h57m24.25s +30°22'15.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Fairly faint near equal white pair.
STF1702 8.7 9.4 35.9'' 83° 2017 CVn 12h58m31.97s +38°16'43.60"
Mark McCarthy
Fremont (California/USA)
317mm (71x) wide orange-yellow pair, in same low power field as STF 1692 & STF 1688
STF1699 8.7 8.8 1.7'' 12° 2017 Com 12h58m40.88s +27°28'27.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Close 1.5" equal white.
STF1701 7.6 9.9 21.5'' 306° 2015 Vir 12h59m20.16s +06°30'21.10"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1701.png
78 UMa, BU1082 5.0 7.9 0.8'' 127° 2017 UMa 13h00m43.59s +56°21'58.80"
Uwe Pilz
Leipzig (Germany)
105mm (260x) nicht getrennt
STF1709 7.9 10.0 2.7'' 252° 2016 Com 13h02m30.62s +23°29'57.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice! Brighter yellowish white A and 4 delta magnitude B, wide separation ~3" to west.
STF1712 10.2 10.6 9.1'' 332° 2016 Vir 13h03m32.39s +09°28'08.00"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1712.png
STF1718 AB-C 9.8 10.1 12.7'' 272° 2014 CVn 13h05m30.27s +50°59'11.00"
Mark McCarthy
Fremont (California/USA)
317mm (277x) faint equal pair with wide separation. AB is 0.2" not seen--BU 643
HJ2638 A-BC 7.5 11.1 6.2'' 223° 2015 Com 13h06m10.29s +29°01'45.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very faint blue preceding a bright white. Did not notice BC, BU 1083, 0.4"
HJ2639 AB 7.5 11.2 36.0'' 158° 2015 CVn 13h06m13.50s +40°55'21.00"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Nice triple. Orange-yellow A and bluish 2 delta mag B and C, wide sep.
HJ2639 AC 7.5 10.8 52.3'' 137° 2015 CVn 13h06m13.50s +40°55'21.00"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Nice triple. Orange-yellow A and bluish 2 delta mag B and C, wide sep.
COU11, 39 Com AB 6.1 8.8 1.8'' 314° 2015 Com 13h06m21.28s +21°09'12.60"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Probably 2" separation, 2 delta mag. Tough observation
Mark McCarthy
Fremont (California/USA)
203mm (667x) 39 Com. Probably 3" separation, 2 delta mag.
STF1719 AB 7.6 8.2 7.1'' 358° 2016 Vir 13h07m19.75s +00°35'06.70"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1719.png
STF1723 8.7 10.1 6.3'' 12° 2015 CVn 13h08m13.49s +38°44'20.20"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Yellow and blue, around 5", 2 delta mag
Mark McCarthy
Fremont (California/USA)
508mm (205x) Light yellow and light orange, 1.5 delta mag, well split
Mark McCarthy
Fremont (California/USA)
508mm (205x) Light yellow and light orange, 1.5 delta mag, well split.
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1723.png
STF1722 8.4 9.3 2.5'' 337° 2017 Com 13h08m26.46s +15°29'29.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange A, 1 delta mag B, ~3". Faint pair.
STF1724, theta Vir, 51 Vir AB 4.4 9.4 6.8'' 342° 2014 Vir 13h09m57.01s -05°32'20.10"
Robert Zebahl
Leipzig (Germany)
70mm (47x) Easy to split with large difference in brightness. Very faint B component clearly apart from the primary component.
STF1728, 42 Com AB-C 4.4 11.4 84.8'' 349° 2014 Com 13h09m59.28s +17°31'46.00"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Alpha Com: Bright yellow, very faint blue B
STFA24 AB 6.0 6.3 275.6'' 296° 2012 CVn 13h10m03.27s +38°29'55.90"
This double star contains of the components 15 and 17 CVn.
Robert Zebahl
Leipzig (Germany)
8x40 Both components similar in brightness with large distance.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Wide bright pair
STT261 7.4 7.6 2.6'' 339° 2017 CVn 13h12m02.02s +32°05'07.90"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Light yellow-white equal pair, ~1.5"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Light yellow-white equal pair, ~1.5".
SHJ162 AB 7.1 8.2 113.2'' 45° 2017 Vir 13h14m55.72s -11°22'09.90"
Mark McCarthy
Fremont (California/USA)
317mm (340x) a widely separated yellow A and orange B, 1 magnitude difference.
BGH46 AB 6.5 7.6 203.1'' 58° 2015 Com 13h16m32.26s +19°47'07.00"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Wide finder split, 1 delta mag, not much to recommend. Triangle of stars to the south, pointing to Bgh 46. [I did look at this at 667x to see if one of the wide pair had a pair of its own, but did not scrutinize well enough. This one should try on a really good night with 20": HDS1862 = Aa,Ab 6.56/9.69 0.4".]
BU800 AB 6.7 9.5 7.6'' 104° 2018 Com 13h16m51.05s +17°01'01.90"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Lovely yellow and orange, very pretty. Wide separation, 2.5 delta mag.
Mark McCarthy
Fremont (California/USA)
203mm (333x) Lovely yellow and orange, very pretty, wide separation, 2.5 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Not difficult, orange-yellow A with bluish B, 3 delta mag. pretty wide to east.
★★ HU644 AB 9.1 9.9 0.4'' 79° 2017 CVn 13h19m45.58s +47°46'41.10"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Orange-red pair, near equal mag, split with seeing at 443x
STF1734 6.8 7.3 1.1'' 173° 2017 Vir 13h20m41.57s +02°56'31.90"
Robert Zebahl
Leipzig (Germany)
70mm (104x) Double star appeared slightly elongated without noticeable constriction.
Mark McCarthy
Fremont (California/USA)
203mm (333x) Blue-white A, light orange B, half delta mag, close ~1.5". Nice!
HO259 AB 7.7 12.7 10.0'' 245° 2015 Com 13h22m34.15s +26°06'56.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) B is very faint, averted vision only, fairly wide sep. ~10-12" to west.
STF1740 7.1 7.4 26.1'' 75° 2016 Vir 13h23m39.16s +02°43'24.00"
Stefan Loibl
Rosenheim (Germany)
10x50 close double star for binoculars, clearly split, component A slightly reddish
Robert Zebahl
Leipzig (Germany)
70mm (33x) Easy to separate, slightly unequal with moderate angular distance. A: pale orange, B: color not clearly perceptible.
Mark McCarthy
Fremont (California/USA)
203mm (333x) hair split equal white pair. Suspected elongation at 205x but needed 333x to split. 667x too much power given the conditions.
Mark McCarthy
Fremont (California/USA)
203mm (333x) Easy wide white A and hint or orange B.
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1740.png
★★ STF1744, zeta UMa 79 UMa, zeta UMa, Mizar AB 2.2 3.9 14.4'' 153° 2017 UMa 13h23m55.42s +54°55'31.50"
Mizar + Alcor AC 2.2 4.0 707.7'' 72° 2017
Robert Zebahl
Leipzig (Germany)
102mm (28x) First pastel sketch (Pitt pastel by Faber-Castell) of a double star on black paper, where also the halos were sketched around the stars. The stars themselves were redrawn with an Edding (Edding 1500, Soft Pastel white). ../projects/doublestars/robert_zebahl/sketches/2019-08-14_mizar_alcor.jpg
Uwe Pilz
Leipzig (Germany)
105mm (288x) AB: mit viel Schwarz zwischen den Beugungsscheiben (1“9) ../projects/doublestars/uwe_pilz/sketches/zetaUMa.jpg
Joerg S. Schlimmer
Germany
127mm (87x) easy to split ../projects/doublestars/joerg_schlimmer/sketches/Zeichnung_Alkor-Mizar_ausschnitt_filtered.jpg
STF1746 7.7 10.7 22.8'' 246° 2015 Vir 13h28m09.72s +09°27'40.10"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1746.png
STT266 8.0 8.4 2.0'' 358° 2018 Com 13h28m26.68s +15°42'30.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Close 2" near equal white. Period of 1954.11 years. Near its closest separation now (May 2017), will be ~4" by the year 2822.
STF1752 AB 8.2 9.9 1.0'' 107° 2017 UMa 13h28m49.82s +59°55'41.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange star perhaps a little elongated, tough.
STF1750, 72 Vir 6.1 10.7 30.0'' 17° 2015 Vir 13h30m25.72s -06°28'13.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 72 Vir: Wide split, yellow-white A and ~10th mag B, 3 delta mag.
STT268, FK Com AB 7.7 13.0 19.1'' 78° 2015 Com 13h30m52.21s +24°14'15.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very faint wide B, bluish. Averted vision best, and with seeing.
STF1755 7.3 8.1 4.2'' 130° 2017 CVn 13h32m21.99s +36°49'05.60"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Pretty orange and blue, 5-6", 2 delta mag. Nice.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and blue, wide, 2 delta mag.
VYS6, VW Com 11.4 11.3 2.6'' 54° 2016 Com 13h32m44.59s +16°48'39.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) VW Com. Seen best with averted vision and when seeing stills. Close but pretty well split, ~2-3". Extremely faint reddish pair, PA NE.
A567 6.2 9.7 1.4'' 256° 2015 Com 13h32m48.21s +24°20'48.30"
Christopher Hay
Seeheim (Germany)
150mm (96x) At a position angle of roughly 265° I had the feeling something was going on; a kind of protusion of the primary, coming and going. 200x: yes, now a stellar condensation kept popping in and out of sight at the same position, just on the outside of the first ring, which itself was coming and going in not-so-perfect seeing. Upping the magnification to 240x and 300x didn't improve the view.
Mark McCarthy
Fremont (California/USA)
317mm (553x) very faint B, very close, ~1" when seeing stills, 3-4 delta magnitude. Surprised it is not so difficult. B looks like it doesn't have any light of its own and is illuminated by A.
STT269 AB-C 6.8 9.2 123.4'' 332° 2012 CVn 13h32m51.02s +34°54'25.80"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Wide but pretty faint pair, 2 delta mag. Did not detect 0.3" AB
STF1758 8.7 8.9 3.3'' 290° 2015 CVn 13h32m51.51s +49°08'24.30"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Nice near equal pair, slightly yellow, ~5"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Nice near equal pair, slightly yellow, ~5"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Evenly matched yellow-orange pair ~4". Nice
STF1756 AB 9.9 10.4 14.7'' 177° 2016 Com 13h33m19.04s +23°00'51.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide white pair, 0.5 delta mag.
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1756.png
STF1757 AB 7.8 8.8 1.7'' 141° 2017 Vir 13h34m16.38s -00°18'49.80"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Close, ~2", a dull orange, ~1.5 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange-yellow, half a delta mag, pretty, ~1.5"
BU114 8.1 8.2 1.3'' 173° 2018 Vir 13h34m17.72s -08°37'07.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice near equal, slightly yellow white stars, ~10th mag. In 80mm finder it is shown with another widely separated equal pair.
HJ1234 AB 6.4 10.5 28.6'' 2008 CVn 13h34m21.87s +38°47'21.30"
Mark McCarthy
Fremont (California/USA)
317mm (277x) B a faint blue orb, looks like a planet reflecting A's light. Yellow A. Nice!
STF1760 8.8 9.1 8.8'' 64° 2018 Com 13h34m23.81s +26°16'34.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright white, pretty wide separation, equal magnitude.
BU932 AB 6.3 7.3 0.4'' 66° 2016 Vir 13h34m40.48s -13°12'51.50"
Mark McCarthy
Fremont (California/USA)
317mm (170x) Out of round with apodizing mask
STF1768, 25 CVn AB 5.0 7.0 1.7'' 95° 2017 CVn 13h37m27.70s +36°17'41.40"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Very tight pair, a little more than hairline split, ~2 delta mag.
Mark McCarthy
Fremont (California/USA)
203mm (205x) Very tight pair, a little more than hairline split, ~2 delta mag. 8" 333x: white and dull blue, ~1", Nice!
Mark McCarthy
Fremont (California/USA)
203mm (333x) White and dull blue, ~1" Nice!
Frederik Wanink
Itterbeck (Germany)
254mm (640x) schwierig wegen Helligkeitsunterschied ../projects/doublestars/frederik_wanink/sketches/25CVn.jpg
Mark McCarthy
Fremont (California/USA)
317mm (277x) Very pretty pale yellow and orange, 2-3 delta mag, ~2"
STF1763 AB 7.8 8.1 2.7'' 39° 2017 Vir 13h37m35.30s -07°52'16.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 81 Vir: near equal orange stars, ~3", 9th mag. Nice!
STF1770 6.9 8.2 1.8'' 128° 2017 UMa 13h37m42.92s +50°42'53.50"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Tight light orange pair, 2 delta mag, ~1".
STF1764 AB 6.8 8.6 15.9'' 32° 2017 Vir 13h37m44.01s +02°22'56.50"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Orange and 2x fainter blue, wide. Another equal wide pair to the south.
STF1769 AC 7.9 9.3 56.2'' 259° 2015 CVn 13h38m01.95s +39°10'41.00"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Wide separated blue stars, half delta mag.
Mark McCarthy
Fremont (California/USA)
203mm (333x) Wide separated blue stars, half delta mag. 2+1 system? 1 delta mag fainter star quite more widely separated. (Sextuple system. I missed the 1.6" AB, need to re-observe; saw the AC pair only -- the fainter star noticed may be part of the system.)
STF1774 6.3 10.5 18.1'' 135° 2015 UMa 13h40m23.35s +50°31'09.40"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Wide white and blue 3 delta mag.
STF1772, 1 Boo AB 5.8 9.6 4.4'' 134° 2017 Boo 13h40m40.50s +19°57'20.40"
Christopher Hay
Seeheim (Germany)
80mm (63x) B pops in and out of view as a very fine pinprick of light reasonably well set off from A. No success at 50x.
Christopher Hay
Seeheim (Germany)
150mm (96x) Well split. Remarkably easy considering the 4-mag difference in brightness. A seems dusky yellow. B perhaps bluish, but hard to determine. 9-mag star a few arcminutes to the north makes the view even more pleasing. According to Stelledoppie AB is a physical double.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright white and 3-4 delta magnitude reddish B, 4-5" to SW.
Berthold Fuchs
Wiesbaden (Germany)
130mm difficult DS ../projects/doublestars/berthold_fuchs/photographs/STF 1772.jpg
STF1776 9.4 9.4 7.3'' 18° 2015 CVn 13h41m47.70s +46°13'11.20"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Near equal white, well split
STF1777, 84 Vir 5.5 8.3 2.7'' 227° 2015 Vir 13h43m03.71s +03°32'16.40"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Light orange and blue-green B, large magnitude difference, ~3". Pretty.
STF1775 AB 7.2 10.1 27.7'' 336° 2012 Vir 13h43m30.35s -04°16'28.10"
Mark McCarthy
Fremont (California/USA)
317mm (340x) a pretty pairing of a bright orange A and a faint bluish B widely separated.
BU115 AC 7.5 13.2 107.3'' 169° 2015 Boo 13h45m20.87s +09°03'28.60"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Slightly orange and very wide separated, much fainter bluish star just visible. Did not notice AB 1.6" 10.4 mag.
BU935, 86 Vir AB 5.7 8.5 1.0'' 304° 2001 Vir 13h45m56.33s -12°25'35.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 86 Vir: Pretty orange star but @ 553x seeing wont allow split of 3 delta mag, 1.2" B. 27" away is equal 11th mag CD pair which I see as a grey smudge
STF1780, 86 Vir AC 5.7 11.9 27.3'' 163° 2000 Vir 13h45m56.33s -12°25'35.60"
Mark McCarthy
Fremont (California/USA)
317mm (340x) 86 Virginis.brighter A and very faint, almost averted vision B widely separated.
STF1781, HT Vir AB 7.9 8.1 1.0'' 195° 2017 Vir 13h46m06.75s +05°06'56.10"
Mark McCarthy
Fremont (California/USA)
203mm (333x) White A and slightly yellow B, ~2", half delta mag
LDS3101 6.4 10.2 488.5'' 105° 2010 Vir 13h46m57.12s +06°21'01.40"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Light yellow A and very much fainter B, 4-5 delta mag., B is just detectable at this aperture Well separated.
S654 AB 5.6 8.9 71.5'' 237° 2015 CVn 13h46m59.77s +38°32'33.70"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Striking yellow-orange and blue-green fainter B.
HJ1244 AB 6.9 10.8 6.9'' 130° 2015 CVn 13h53m20.79s +42°11'05.30"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Wow! Very faint B but can hold it direct vision with the seeing. Well separated from and orange-yellow A.
STF1789 8.6 9.0 6.5'' 327° 2015 CVn 13h54m05.19s +32°49'35.20"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Pretty equal magnitude white, well separated.
Berthold Fuchs
Wiesbaden (Germany)
130mm difficult DS ../projects/doublestars/berthold_fuchs/photographs/STF 1789.png
STF1887 9.2 11.2 3.3'' 226° 2013 UMi 13h54m57.46s +87°23'44.10"
Mark McCarthy
Fremont (California/USA)
203mm (333x) A star yellow, messy with seeing, B nice light blue and clean.
Mark McCarthy
Fremont (California/USA)
203mm (333x) Izar. A yellow, messy with seeing. B nice light blue and clean.
STF1788 AB 6.7 7.3 3.7'' 101° 2018 Vir 13h54m58.20s -08°03'31.90"
Robert Zebahl
Leipzig (Germany)
70mm (47x) Very nice view! Pretty tight together with a moderate difference in brightness.
Mark McCarthy
Fremont (California/USA)
317mm (340x) bright pair of near equal magnitude, both yellow-while color.
STF1793 7.5 8.4 4.9'' 242° 2017 Boo 13h59m05.25s +25°48'57.60"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 32x kleben beide Komponenten noch aneinander - bei 64x knapp und bei 107x dann gut getrennt - die B-Komponente westlich ist gut eine Größenklasse schwächer
Berthold Fuchs
Wiesbaden (Germany)
130mm close DS ../projects/doublestars/berthold_fuchs/photographs/STF 1793.png
A1097 AB 9.1 8.2 0.4'' 254° 2010 UMa 14h02m00.60s +57°13'28.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Hair-split at best moments, half delta mag, <0.8". A fainter star likely in the system about 30" distant -- this is STF 1800 AB-C.
STF1800 AB-C 7.8 10.4 28.4'' 20° 2015 UMa 14h02m00.60s +57°13'28.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint star ~30" from A1097
BGH50 7.0 8.9 96.9'' 32° 2015 Boo 14h04m45.95s +25°49'03.90"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Finder split. Wide pair, 2 delta mag, dull white. Viewed 8" 205x, no apparent other doubling.
Mark McCarthy
Fremont (California/USA)
203mm (205x) 13x80mm finder split. Wide pair, 2 delta mag, dull white. Viewed 8" 205x, no apparent other doubling
STT276 AB 8.9 9.4 0.4'' 207° 2016 Boo 14h08m11.84s +36°44'56.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Marginal elongation to rod
STT276 AB-C 8.5 10.6 9.5'' 72° 2015 Boo 14h08m11.84s +36°44'56.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 1 delta mag, ~5"
STT275 7.3 10.1 5.0'' 354° 2015 Vir 14h09m11.21s +07°23'05.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange star with very faint B, 3-4 delta mag, wide ~10". Nice!
STF1805 9.0 9.2 4.9'' 34° 2018 Vir 14h09m57.24s +04°00'56.40"
Berthold Fuchs
Wiesbaden (Germany)
130mm close DS ../projects/doublestars/berthold_fuchs/photographs/STF 1805.png
STF1812 AB-C 7.9 9.4 14.0'' 108° 2015 Boo 14h12m26.68s +28°43'02.30"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x ist die C-Komponente östlich knapp getrennt von AB gerade so erkennbar - bei 32x dann schön getrenntes Pärchen, C-Komponente deutlich schwächer, vielleicht 2 mag weniger
Mark McCarthy
Fremont (California/USA)
203mm (205x) 2.5 delta mag, pretty wide. There's a third, fainter pair about 4x out from the other separation
Mark McCarthy
Fremont (California/USA)
203mm (205x) A 2+1 system with AB-D. Main pair 2.5 delta mag, pretty wide. The third, fainter pair about 4x the other separation.
STF1813 8.4 8.6 4.8'' 193° 2018 Vir 14h13m24.23s +05°24'03.20"
Berthold Fuchs
Wiesbaden (Germany)
130mm close DS ../projects/doublestars/berthold_fuchs/photographs/STF 1813.png
STF1821, kap Boo AB 4.5 6.6 13.7'' 236° 2017 Boo 14h13m29.00s +51°47'23.80"
Uwe Pilz
Leipzig (Germany)
105mm (144x) weiß-grau, trennbar bei 22x
STT279 6.8 9.1 2.2'' 257° 2018 Boo 14h13m49.46s +11°59'51.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very pretty orange and blue, 2-3", PA SW 2 delta mag
STF1816 7.4 7.8 0.4'' 96° 2011 Boo 14h13m54.63s +29°06'19.50"
Uwe Pilz
Leipzig (Germany)
105mm (88x) gelb ../projects/doublestars/uwe_pilz/sketches/stf1816.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Rod-shaped equal white. July 2017
KUI66, 15 Boo 5.4 8.4 0.8'' 111° 2015 Boo 14h14m50.85s +10°06'02.20"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Light orange and two possible pairs, both very faint on the edge of detection. One closer but still visible, very wide.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Using apodizing mask I had a glimpse of the B star 15% of the time, very small and faint, ~3" and 4-5 delta mag. Both orange.
STF1829 8.1 8.6 5.6'' 151° 2015 Boo 14h15m27.95s +50°26'24.60"
Uwe Pilz
Leipzig (Germany)
105mm (144x) einfach
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal white wide.
STF1831 AB 7.2 9.6 5.8'' 138° 2017 UMa 14h16m08.47s +56°42'45.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) One pair close to another, 5" and 2 delta mag. Part of a widely separated equal pair, and a gang of three stars further away -- five additional pairings in the system.
iota Boo, 21 Boo, STFA26 AB 4.8 7.4 38.9'' 33° 2017 Boo 14h16m10.07s +51°22'01.30"
Uwe Pilz
Leipzig (Germany)
105mm (144x) sehr weit, auffallend bei 22x
STF1825 6.5 8.4 4.4'' 153° 2018 Boo 14h16m32.84s +20°07'18.70"
Mark McCarthy
Fremont (California/USA)
317mm (277x) White and orange, 3 delta mag, well split.
ENG51, 18 Boo 5.4 10.8 164.0'' 219° 2015 Boo 14h19m16.28s +13°00'15.50"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Very wide faint blue star to the south, 5 delta mag.
STF1834 8.1 8.3 1.6'' 104° 2018 Boo 14h20m17.60s +48°30'25.10"
Robert Zebahl
Leipzig (Germany)
120mm (150x) At 108x elongated, at 150x barely split with similarly bright components.
STT281 7.7 9.7 1.5'' 166° 2017 Boo 14h20m20.85s +08°34'56.30"
Uwe Pilz
Leipzig (Germany)
105mm (200x) der Begleiter ist schwach und schwierig ../projects/doublestars/uwe_pilz/sketches/191129stf281.jpg
Mark McCarthy
Fremont (California/USA)
203mm (333x) Very fine, but well split, huge delta mag, surprise!
STF1835 A-BC 5.0 6.8 6.2'' 196° 2018 Boo 14h23m22.74s +08°26'47.90"
Robert Zebahl
Leipzig (Germany)
102mm (62x) At 28x barely split with visible difference in brightness. At 62x easy to separate. The colors seemed similar.
Mark McCarthy
Fremont (California/USA)
203mm (333x) Yellow A and slightly yellow B, wide. Did not notice BU1111 BC, 0.3" 7.4/7.7
Mark McCarthy
Fremont (California/USA)
317mm (277x) In a line of three stars, white and slightly red B. Wide, ~6", 2 delta mag. Did not detect BC 0.3"
Berthold Fuchs
Wiesbaden (Germany)
130mm close DS ../projects/doublestars/berthold_fuchs/photographs/STF 1835.jpg
STF1838 7.5 7.7 9.7'' 335° 2017 Boo 14h24m05.76s +11°14'49.10"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1838.jpg
STF1843 AB 7.7 9.2 19.6'' 187° 2015 Boo 14h24m38.91s +47°49'50.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty wide, 3 delta mag.
STT580, the Boo 4.1 11.5 69.6'' 182° 2003 Boo 14h25m11.79s +51°51'02.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 23 Boo, Theta Boo. Very bright A with very faint B, wide.
STF1850 7.1 7.6 25.1'' 262° 2017 Boo 14h28m33.29s +28°17'25.90"
Rene Merting
Drachhausen (Germany)
16x70 ein gut getrenntes Paar zweier gleich heller Sterne - beide weiß
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x locker getrennt - Komponente B ist vielleicht eine halbe Magnitude schwächer als A und strahlt ein wenig dumpfer bzw. weniger weiß
Mark McCarthy
Fremont (California/USA)
203mm (205x) Very wide, 1/2 delta mag.
Mark McCarthy
Fremont (California/USA)
203mm (205x) Very wide, half delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide yellow-white, 1 delta mag.
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1850.jpg
STF1854 AB 6.0 10.6 26.1'' 256° 2015 Boo 14h29m49.66s +31°47'28.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright blue-white A, faint pair to the west, wide
BU1443 6.2 10.6 55.7'' 195° 2017 Vir 14h30m45.39s +04°46'20.20"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Light yellow-orange A and much fainter blue B, wide separation.
BU117 AB 8.4 9.4 1.4'' 74° 2017 Lib 14h31m19.74s -15°38'19.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Well split, 0.5 delta mag, ~1.5”.
HJ2728, rho Boo 3.6 11.5 33.8'' 343° 2017 Boo 14h31m49.86s +30°22'16.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide blue faint B to bright orange A. PA to west, 4-5 delta mag.
HU140 9.5 10.1 1.4'' 196° 2016 Lib 14h32m32.68s -13°00'14.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Seeing not quite good enough, need more darkness, and it’s near Jupiter. I can see an elongated smear, averted vision brightens but does not split.
STF1858 AB 8.1 9.0 3.0'' 37° 2018 Boo 14h33m36.45s +35°35'08.00"
Rene Merting
Drachhausen (Germany)
100mm (142x) bei 64x ein extrem dicht stehendes Pärchen, Trennung fast greifbar - bei 142x stehen die Sterne noch immer sehr eng, die Trennung ist nun aber eindeutig - Komponente B im Nordosten ist etwas schwächer - beide Sterne leicht gelblich, hin und wieder mit Farbkontrast in Richtung orange
Uwe Pilz
Leipzig (Germany)
105mm (288x) nicht getrennt
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal orange 3-4"
STF1858 AC 8.1 14.3 16.2'' 274° 2015 Boo 14h33m36.45s +35°35'08.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 13th magnitude, a wide pair? Seen with averted vision, comes and goes with seeing
STT582, sig Boo AB 4.5 10.7 215.3'' 85° 2012 Boo 14h34m40.81s +29°44'42.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very wide blue to east?
STF1863 7.7 7.8 0.6'' 59° 2018 Boo 14h38m00.71s +51°34'42.10"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) gerade trennbar ../projects/doublestars/frederik_wanink/sketches/STF1863.jpg
STF1864, pi 1 Boo AB 4.9 5.8 5.5'' 113° 2018 Boo 14h40m43.56s +16°25'05.90"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 32x eine 8, bei 64x dann knappe Trennung des Doppelsterns - Komponente B östlich ist nur leicht schwächer und erscheint mit einem zarten Stich ins Gelbe
Berthold Fuchs
Wiesbaden (Germany)
130mm close DS ../projects/doublestars/berthold_fuchs/photographs/pi Bootis.png
STF1867 8.4 8.8 0.7'' 355° 2017 Boo 14h40m44.21s +31°17'23.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 0.5 delta mag, hair to figure 8 split, white.
★★★ zeta Boo STF1865 AB 4.5 4.5 0.3'' 283° 2018 Boo 14h41m08.92s +13°43'42.00"
H6 104 AB-C 4.5 11.0 103.8'' 259° 2001
Uwe Pilz
Leipzig (Germany)
105mm (88x) AB-C ../projects/doublestars/uwe_pilz/sketches/zetaBoo.jpg
STF1878, DL Dra 6.3 9.2 4.1'' 315° 2015 Dra 14h42m03.25s +61°15'42.90"
Uwe Pilz
Leipzig (Germany)
105mm (198x) starke Aufhellung im ersten Ring ../projects/doublestars/uwe_pilz/sketches/stf1878.jpg
A1109 AB 7.4 9.4 1.9'' 88° 2017 Vir 14h42m47.60s +06°35'26.40"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Both stars light yellow, big magnitude difference, ~3-4 delta mag, about 2". Not difficult
STF1870 7.5 10.0 4.8'' 229° 2015 Boo 14h42m55.10s +08°04'34.30"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Yellow A and very much fainter B, wide ~5"? 4 delta mag. B flashes to view with seeing
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow and fairly faint blue B, ~5-6", 3 delta mag.
STF1873 8.0 8.3 6.9'' 94° 2017 Boo 14h44m48.13s +07°42'04.00"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Light orange and light blue, wide.
STF1877, epsilon Boo, Izar AB 2.6 4.8 2.9'' 344° 2018 Boo 14h44m59.14s +27°04'29.90"
Robert Zebahl
Leipzig (Germany)
55mm (125x) The fainter component was seen as permanent brightening on the first diffraction ring of the primary component.
Robert Zebahl
Leipzig (Germany)
60mm (192x) Easy to split, whereby the much fainter component lies on the first diffraction ring of the primary component. The primary component itself appeared slightly yellowish. ../projects/doublestars/robert_zebahl/sketches/2018-04-10_eps_boo.jpg
Robert Zebahl
Leipzig (Germany)
70mm (133x) Easy to split, very unequal. A appeared in pale orange, B was visible as a very tiny, gray star on the first diffraction ring of component A.
Rene Merting
Drachhausen (Germany)
100mm (142x) bei 107x erscheint die B-Komponente nordwestlich leicht angesetzt an der gelblich strahlenden Komponente A - bei 142x dann ist die Trennung komplett, B liegt schön auf einem abgesetzten Beugungskranz von Komponente A
Stefan Loibl
Rosenheim (Germany)
102mm (205x) nice contrast yellow-orange/blue
Robert Zebahl
Leipzig (Germany)
120mm (192x) At 85x the fainter component was easily visible but not separated. At 192x well split. The fainter component was almost on the first diffraction ring of the primary component. Quite big difference in brightness. I did not looked at the color of the components.
Frederik Wanink
Itterbeck (Germany)
254mm (640x) deutl. Farbkontrast blau gelb ../projects/doublestars/frederik_wanink/sketches/Izar.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Izar: Yellow-orange and blue, very pretty, as always
Berthold Fuchs
Wiesbaden (Germany)
130mm magnificent DS ../projects/doublestars/berthold_fuchs/photographs/eps Bootis.png
★★ HLD20, 5 Lib 6.5 10.1 4.7'' 249° 2001 Lib 14h45m57.78s -15°27'34.40"
Mark McCarthy
Fremont (California/USA)
508mm (333x) Seeing distorts the A star into messy diffraction, but can see a much fainter orange star, seen as a point, outside the diffraction, 5-6", very fine!
Mark McCarthy
Fremont (California/USA)
508mm (333x) 8" 205x Orange star but no companion. 20" 333x Seeing distorted but a much fainter orange star seen as a point outside the diffraction, 5-6", Very fine! Put 8" mask back on @ 333x and can't see the B star!
STF1879 AB 7.8 8.4 1.7'' 82° 2018 Boo 14h46m15.58s +09°38'48.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Fairly close yellow and orange-yellow, ~1 delta mag, ~3"
STF1881 6.7 8.8 3.5'' 2017 Vir 14h47m05.35s +00°58'15.20"
Uwe Pilz
Leipzig (Germany)
70mm (198x) sehr schwierig, einfach mit 105mm ../projects/doublestars/uwe_pilz/sketches/stf1881.jpg
Mark McCarthy
Fremont (California/USA)
203mm (205x) Blue-white and 3-4 delta mag fainter B star, dull blue color. Well separated.
STF1884 6.6 7.5 2.2'' 56° 2018 Boo 14h48m23.37s +24°22'01.00"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x ist der Doppelstern als 8 erkennbar, 107x reicht dann für die knappe Trennung - die B-Komponente im Nordosten ist nur unwesentlich schwächer - ein sehenswertes Pärchen
Robert Zebahl
Leipzig (Germany)
102mm (86x) At 86x pretty tight and unequal. At 160x clearly split. A: white, B: slightly orange.
Mark McCarthy
Fremont (California/USA)
203mm (333x) White, fairly close ~3", half delta mag.
Mark McCarthy
Fremont (California/USA)
203mm (333x) White, fairly close ~3", half delta mag.
Frederik Wanink
Itterbeck (Germany)
254mm (640x) einfach ../projects/doublestars/frederik_wanink/sketches/STF1884.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange-white, 3 delta mag, ~5"
BU346 7.5 7.9 2.7'' 277° 2017 Lib 14h48m31.71s -17°20'24.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Easy, well split, yellow-orange stars, half delta mag.
STF1883 7.0 8.9 1.0'' 278° 2015 Vir 14h48m53.22s +05°57'15.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Strongly suspect a split / elongation in 80mm finder. In the scope it is a tight 2 delta mag orangish-white pair, ~1"
BU106, mu Lib AB 5.6 6.6 2.0'' 2016 Lib 14h49m19.09s -14°08'56.30"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Close, 1.5-2", half to one delta mag, off-white stars
Mark McCarthy
Fremont (California/USA)
203mm (333x) Close, 1.5-2", half to one delta mag, off-white stars.
Frederik Wanink
Itterbeck (Germany)
254mm (640x) getrennt, schwierig wegen Südlage ../projects/doublestars/frederik_wanink/sketches/MuLib.jpg
Mark McCarthy
Fremont (California/USA)
317mm (277x) Mu Lib: Easy, white & off white, 1 delta mag, ~3"
STF1890, 39 Boo 6.3 6.7 2.6'' 46° 2018 Boo 14h49m41.37s +48°43'15.60"
Robert Zebahl
Leipzig (Germany)
70mm (67x) At 44x elongated, partly with constriction. At 67x split, but very tight. A difference in brightness was not seen. At 133x clearly separated with little difference in brightness. A appeared pale yellow, B rather warm-white.
Frederik Wanink
Itterbeck (Germany)
254mm (640x) gleich hell ../projects/doublestars/frederik_wanink/sketches/39Boo.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright white pair, well split
STF1886 AB 7.6 9.7 7.8'' 226° 2017 Boo 14h51m02.31s +09°43'25.20"
Robert Zebahl
Leipzig (Germany)
102mm (28x) At 28x, the B component appeared rather faint and pretty close to the primary component. At 62x both components were clearly visible and unequal. A: slightly orange, B: grayish.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow-orange and orange, pretty wide ~10" 2 delta mag
Berthold Fuchs
Wiesbaden (Germany)
130mm close DS ../projects/doublestars/berthold_fuchs/photographs/STF 1886.jpg
STF1888, xi Boo AB 4.8 7.0 5.4'' 301° 2017 Boo 14h51m23.38s +19°06'01.70"
Mark McCarthy
Fremont (California/USA)
203mm (205x) A star a very pretty light yellow with 2 delta mag. light orange B star, ~5" separation
Mark McCarthy
Fremont (California/USA)
203mm (205x) A star a very pretty light yellow with 2 delta mag. light orange B, ~5".
Mark McCarthy
Fremont (California/USA)
317mm (277x) Xi Boo Pretty yellow & orange pair, 2 delta mag, ~8".
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty. Yellow and orange pair, ~6", 3 delta mag.
STT287 8.4 8.6 0.6'' 2018 Boo 14h51m27.53s +44°55'42.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wow! Hair-split, ~0.7", near equal to half a delta mag.
HO389 7.0 10.5 1.6'' 88° 2010 Boo 14h52m07.44s +20°17'26.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Definite split of much fainter pair, ~1.5", somewhat lost in diffraction, but there!
STT288 6.9 7.5 1.0'' 157° 2018 Boo 14h53m23.35s +15°42'18.30"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) rel. einfach ../projects/doublestars/frederik_wanink/sketches/STT288.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Notched / figure 8 with 277x, split with 553x.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Needed 553x to separate, resolved with the seeing. Near equal yellow-white, ~1" or less.
STT289 6.2 11.1 4.8'' 109° 2017 Boo 14h55m58.63s +32°18'00.30"
Mark McCarthy
Fremont (California/USA)
203mm (205x) With 8" 205x I noticed a very much fainter star emerge with averted vision then could hold direct, very fine, well split. At 8" 410x, I tried to bring out the B star with higher magnification, but oddly it disappeared. At 20" 410x, the B star easily seen though the disks are bloated, seeing not good
Mark McCarthy
Fremont (California/USA)
203mm (205x) 8" 205x Noticed a very much fainter star emerge with averted vision then could hold direct. Very fine, well split. 8" 410x Tried to bring out the B star with higher magnification, but oddly it disappeared. 20" 410x B star easily seen though the disks are bloated, seeing not good.
STF1895 8.3 8.9 12.7'' 42° 2017 Boo 14h57m27.87s +40°09'42.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint 1 delta mag pair, wide separation.
H6 51, 1 Ser AB 5.6 10.4 86.4'' 224° 2012 Vir 14h57m33.25s -00°10'03.40"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Orange in finder scope. In main scope a wide separation blue B, 3 delta mag
STT291, BX Boo 6.3 9.6 35.9'' 170° 2015 Boo 15h00m38.72s +47°16'38.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty wide, 2 delta mag, white.
STF1899 6.7 10.2 28.3'' 67° 2015 Lib 15h01m35.34s -03°09'50.50"
Mark McCarthy
Fremont (California/USA)
203mm (333x) White with very much fainter wide blue B
Mark McCarthy
Fremont (California/USA)
203mm (333x) White with very much fainter wide blue B.
Mark McCarthy
Fremont (California/USA)
203mm (333x) Light orange and faint (on edge of visibility) blue star, wide separation
BU348 AB 6.1 7.5 0.5'' 108° 2007 Vir 15h01m48.92s -00°08'24.90"
Mark McCarthy
Fremont (California/USA)
203mm (447x) At 333x, suspect elongation. At 667x, definite elongation. 447x was the best/cleanest view, clearly elongated. With 20" 667x & 447x, the view is too messy
Mark McCarthy
Fremont (California/USA)
203mm (447x) 8" 333x Suspect elongation. 8" 667x Definite elongation. 8" 447x, best/cleanest view, clearly elongated.
Mark McCarthy
Fremont (California/USA)
203mm (667x) Seems out of round at 333x and 677x, seeing too poor for 20". Marginal
STF1909, 44 Boo 5.2 6.1 0.4'' 84° 2018 Boo 15h03m47.30s +47°39'14.60"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) 2015 getrennt zu sehen (1") ../projects/doublestars/frederik_wanink/sketches/44Boo.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) I Boo. Figure 8 to hair split, ~0.9". This pair shrinking separation fast, will be <0.5" in a couple of years. Only 40 LY away. (July 2017)
BU119 AB 8.1 8.8 2.3'' 275° 2017 Lib 15h05m31.91s -07°00'48.80"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Tried 667x at first but it was too much power, too dim and seeing too choppy. 333x was perfect, clean and well split ~2" near equal, slightly orange
Mark McCarthy
Fremont (California/USA)
203mm (333x) 8" 667x Too much power, too dim and seeing too choppy. 8" 333x perfect, clean and well split ~2" near equal, slightly orange.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very like BU 346. well split near half delta mag yellow stars, 2.5”
ENG52, 45 Boo AB 5.0 11.5 103.5'' 40° 2012 Boo 15h07m18.06s +24°52'09.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright white-yellow A, very faint 4-5 delta mag B, bluish, very wide separation.
STF1910 7.3 7.5 3.9'' 212° 2018 Boo 15h07m32.95s +09°13'33.80"
Berthold Fuchs
Wiesbaden (Germany)
130mm close DS ../projects/doublestars/berthold_fuchs/photographs/STF 1910.jpg
HJ2766 5.8 12.2 57.6'' 331° 2016 Boo 15h08m35.56s +25°06'31.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange-yellow A with very wide, very faint B, ~ 4 delta mag.
STF3090 AB 9.1 9.3 0.6'' 287° 2017 Vir 15h08m42.97s -00°58'50.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Notched to hairline split at the best moments. Faint pair, tough. Seeing not good enough to go above 553x.
BU349 7.6 10.9 3.3'' 38° 2015 Vir 15h08m57.33s +01°41'21.40"
Mark McCarthy
Fremont (California/USA)
508mm (333x) B star easily seen despite diffraction. Can only see with 8" 333x after first having seen it in the 20", and even then need averted vision to bring it out
Mark McCarthy
Fremont (California/USA)
508mm (333x) 20" 333x, B star easily seen despite diffraction. Can only see with 8" @ 333x after first having seen it in the 20", and even then need averted vision to bring it out.
STF1916 8.4 10.6 9.8'' 331° 2015 Boo 15h09m54.15s +38°58'33.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow and reddish B, 1.5 delta mag, 8-10"
STF1921 8.6 8.7 30.3'' 283° 2017 Boo 15h12m00.00s +38°40'12.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very wide white pair, 1 delta mag, easy!
STF1919 6.7 7.4 23.2'' 11° 2018 Ser 15h12m43.48s +19°17'09.80"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Pretty wide separated stars, both white with a tint of yellow. Half delta mag.
Mark McCarthy
Fremont (California/USA)
203mm (205x) Pretty wide separated stars, both white with a tint of yellow. Half delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very wide yellow and orange-yellow. In an arc of three stars, with nice orange carbon star at the other end.
ES2648 AB 7.3 11.2 26.3'' 341° 2015 Boo 15h12m43.76s +48°34'50.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange with very faint bluish star, 3-4 delta mag., ~0.8"
H5 125 8.4 9.5 32.2'' 228° 2017 Boo 15h12m47.74s +27°55'35.60"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x zeigen sich zwei schwache Sternchen weit getrennt - Komponente B nicht signifikant schwächer - Farbkontrast zwischen beiden Sternen erkennbar, B mitunter bei 32x mit kupfernem Glanz
STT292 6.2 9.4 117.6'' 158° 2017 Boo 15h14m06.04s +31°47'16.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange star with two possible wide pairs, just pick one of the stars and that's B!]
STFA27, 49 Boo AB 3.6 7.9 105.0'' 78° 2017 Boo 15h15m30.16s +33°18'53.40"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Split in 80mm finder. Very wide pair, very bright A, 3 delta mag B. Orange-yellow and blue-white B
Mark McCarthy
Fremont (California/USA)
203mm (205x) Bright star with many nearby faint stars. Didn't bother trying to figure out which are which.
STF3091 AB-E 7.3 12.0 41.3'' 46° 2015 Ser 15h16m01.56s -04°53'52.30"
Mark McCarthy
Fremont (California/USA)
203mm (333x) White with very much fainter wide blue B
Mark McCarthy
Fremont (California/USA)
203mm (333x) White with very much fainter wide blue B. (AB-E seen, missed AB 0.5")
STF1932 AB 7.3 7.4 1.6'' 267° 2018 CrB 15h18m20.19s +26°50'24.70"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Near equal, yellowish white, ~2"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Near equal, yellowish white, ~2"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) gleich hell, getrennt ../projects/doublestars/frederik_wanink/sketches/STF1932.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal yellow-white, very close but clean split, ~1.5". Nice!
★★ STF1930, 5 Ser AB 5.1 10.1 11.1'' 36° 2017 Ser 15h19m18.79s +01°45'55.50"
Stefan Loibl
Rosenheim (Germany)
102mm (68x) Messier 5 in the same FOV, wonderful
Mark McCarthy
Fremont (California/USA)
203mm (333x) Light yellow bright A, very much fainter orangish B, wide separation. Near M5.
STF1935 9.9 10.2 8.6'' 289° 2015 CrB 15h20m13.27s +30°41'44.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint wide pair, 1 delta mag.
BU32, 6 Ser AB 5.5 8.8 3.4'' 22° 2008 Ser 15h21m02.00s +00°42'55.20"
Robert Zebahl
Leipzig (Germany)
102mm (224x) Not split. Tried at 224x and 280x. Companion probably too faint. I had sidewalk lighting in the immediate vicinity.
Uwe Pilz
Leipzig (Germany)
105mm (288x) Der Begleiter ist sehr schwach. Auch mit 90 mm Blende noch gesehen ../projects/doublestars/uwe_pilz/sketches/190628_6Ser.jpg
Mark McCarthy
Fremont (California/USA)
203mm (333x) Light yellow A and very much fainter B, wide separation.
STF1936 9.9 10.1 19.8'' 231° 2015 CrB 15h21m07.63s +27°02'23.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty faint near equal wide white pair through finder. In scope one star splits into a close double
HJ2777 7.4 12.1 42.6'' 342° 2015 CrB 15h22m25.32s +25°37'27.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) UV CrB: Light orange with very faint blue B, very wide 3 delta mag.
STF1937, eta CrB AB 5.6 6.0 0.6'' 231° 2017 CrB 15h23m12.23s +30°17'17.70"
Mark McCarthy
Fremont (California/USA)
203mm (667x) 8" @ 333x, Suspect elongation. 8" 667x definite egg shape. 20" 667x: Can't get a good focus
Mark McCarthy
Fremont (California/USA)
203mm (667x) 8" 333x Suspect elongation. 8" 667x definite egg shape. 20" 667x Can't get a good focus.
Frederik Wanink
Itterbeck (Germany)
254mm (640x) deutlich als 8 zu sehen, 2015 0,6" ../projects/doublestars/frederik_wanink/sketches/EtaCrB.jpg
Mark McCarthy
Fremont (California/USA)
317mm (277x) Close orange pair, equal mag, snowman shape
Mark McCarthy
Fremont (California/USA)
317mm (553x) Overlapping / notched orange-yellow stars. Used apodising mask.
★★ mu Boo STFA28, mu 1 Boo, 51 Boo AB 4.3 7.1 108.2'' 171° 2017 Boo 15h24m29.54s +37°22'37.10"
STF1938, mu 2 Boo Ba-Bb 7.1 7.6 2.2'' 2017
Robert Zebahl
Leipzig (Germany)
8x40 STFA28 (AB): Easily split with obvious difference in brightness.
Rene Merting
Drachhausen (Germany)
16x70 STFA28 (AB): weit getrenntes Pärchen, aufgrund der großen Helligkeitsunterschiedes schöner Farbkontrast - Komponente A im Norden gelblich, B im Süden mehr grau-braun
Robert Zebahl
Leipzig (Germany)
70mm (22x) STFA28 (AB): Evident, very wide apart and unequal. A: white-yellowish, B: gray.
Robert Zebahl
Leipzig (Germany)
102mm (125x) STF1938 (Ba-Bb): Beautiful view! This triple system includes STFA 28 and STF 1938. ../projects/doublestars/robert_zebahl/sketches/2019-04-04_mu_boo.jpg
Uwe Pilz
Leipzig (Germany)
105mm (288x) ein heller 4m und zwei nahe dunkle 7m, lohnend.
Robert Zebahl
Leipzig (Germany)
120mm (23x) STFA28 (AB): Easy to split with large angular distance and noticeable difference in brightness.
Mark McCarthy
Fremont (California/USA)
203mm (205x) STFA28 (AB): Bright A star does not seem round. The B star is a tight equal pair, pretty set. [Aa,Ab is CHR 181 0.1", and I'd be shocked if I actually detected it. STFA 28 is technically the bright star and the tight pair, the tight pair is Ba,Bb = STF 1938, 7.09/7.63, 2.2"]
Mark McCarthy
Fremont (California/USA)
203mm (205x) STFA28 (AB): Bright A star does not seem round (CHR181). B star is a tight equal pair (STF1938 Ba-Bb). Pretty set. STFA 28 is technically the bright star and the tight pair
Mark McCarthy
Fremont (California/USA)
203mm (205x) STF1938 (Ba-Bb): Bright A star does not seem round (CHR181). B star is a tight equal pair (STF1938 Ba-Bb). Pretty set. STFA 28 is technically the bright star and the tight pair
Frederik Wanink
Itterbeck (Germany)
254mm (640x) STF1938 (Ba-Bb): 3er System, schön ../projects/doublestars/frederik_wanink/sketches/STF1938.jpg
Mark McCarthy
Fremont (California/USA)
317mm (277x) STF1938 (Ba-Bb): Tight 3 detla mag pair, fainter than the bright white A star Mu Boo.
Mark McCarthy
Fremont (California/USA)
317mm (277x) STFA28 (AB): Bright white star with tight yellow pair STF 1938 as its companion.
Mark McCarthy
Fremont (California/USA)
317mm (553x) STFA28 (AB): Striking. Bright star with near equal double STF 1938 paired with it. A star is a spectroscopic binary
Mark McCarthy
Fremont (California/USA)
317mm (553x) STF1938 (Ba-Bb): Near equal close but well split double also paired with STFA28
CHR181, mu 1 Boo Aa-Ab 4.3 0.1'' 188° 2012 Boo 15h24m29.54s +37°22'37.10"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Bright A star does not seem round (CHR181). B star is a tight equal pair (STF1938 Ba-Bb). Pretty set. STFA 28 is technically the bright star and the tight pair
HU149 7.5 7.6 0.7'' 272° 2017 Dra 15h24m35.30s +54°12'46.10"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) mit Zwischenraum zu sehen ../projects/doublestars/frederik_wanink/sketches/HU149.jpg
★★ STF1941 9.7 9.8 1.4'' 212° 2017 CrB 15h25m42.81s +26°37'40.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint, very close equal pair, ~1.5". Nice!
★★ STT296 AB 7.8 9.1 2.2'' 274° 2016 Boo 15h26m26.56s +44°00'13.20"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Very fine but well split, ~2", yellow-white A, reddish B, 2 delta mag.
Mark McCarthy
Fremont (California/USA)
203mm (205x) Very fine but well split, ~2", yellow-white A, reddish B, 2 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very beautiful, 2", 2 delta mag, with very faint third (AC) seen with averted vision widely separated.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Close near equal, 1 delta mag, white.
STT296 AC 7.8 12.7 80.7'' 313° 2016 Boo 15h26m26.56s +44°00'13.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very beautiful, 2", 2 delta mag, with very faint third (AC) seen with averted vision widely separated.
KU108 AB 7.5 9.7 40.7'' 319° 2015 Boo 15h27m40.35s +42°52'52.90"
Mark McCarthy
Fremont (California/USA)
203mm (205x) White A and reddish B stars. Wide, 2 delta mag. [Need to try this with the 20": BC = RAO 18 9.74/11.00 0.4"]
Mark McCarthy
Fremont (California/USA)
203mm (205x) White A and reddish B stars. Wide, 2 delta mag. (Need to try this with the 20": BC = RAO 18 9.74/11.00 0.4")
JEF1, bet CrB 3.7 5.2 0.1'' 327° 2012 CrB 15h27m49.85s +29°06'19.80"
Mark McCarthy
Fremont (California/USA)
762mm (457x) Suspect out of roundness in the star disk. Tried with and without a hexagon mask.
STF1972, pi 1 UMi AB 6.6 7.3 31.6'' 80° 2018 UMi 15h29m11.19s +80°26'55.00"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x weit getrennt - Komponente B ist nur knapp schwächer als A - Komponente A gelblich-weiß, B sorgt für einen sanften Farbkontrast mit weiß und einem Stich ins orange - bei 20x ebenfalls ein weit getrenntes Pärchen in schönem Umfeld mit vielen gleich hellen Sternen
★★ STF1950 8.1 9.2 3.4'' 93° 2017 Ser 15h29m58.46s +25°30'31.10"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Dull orange A star, 1.5 delta mag to B, B star ~4", a flatter orange color
Mark McCarthy
Fremont (California/USA)
203mm (333x) Dull orange A, 1.5 delta mag, B ~4", a flatter orange color.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Very fine orange pair 2 delta mag, ~1.5”. B appears fine and delicate.
Mark McCarthy
Fremont (California/USA)
317mm (340x) 72 Vir: Bright A and very faint B, widely separated.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty orange and pale orange, 2 delta mag, ~4"
COU610, the CrB 4.3 6.3 0.8'' 199° 2016 CrB 15h32m55.78s +31°21'32.90"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Notched/snowman at best moments. B definitely fainter and almost blue. looks like an appendage. 20" too messy. I tried this one in 2018 with a 30" scope and failed.
Mark McCarthy
Fremont (California/USA)
203mm (667x) Notched/snowman at best moments. B definitely fainter and almost blue. Very faintly split, looks like a blue appendage.
Frederik Wanink
Itterbeck (Germany)
254mm (640x) nicht als DS gesehen
Mark McCarthy
Fremont (California/USA)
317mm (738x) Tried pretty hard at 553x with apodizing screen, but dances too much. Used 6mm ortho with barlow, 738x, and at best moment it is olive shaped, but marginal. Observation August 2018
Mark McCarthy
Fremont (California/USA)
762mm (915x) The CrB: Fractured and dancing seeing. 915x, at full aperture and with 8-inch aperture mask, I see a slight out of roundness.
STF1954, delta Ser, 13 Ser AB 4.2 5.2 4.0'' 173° 2018 Ser 15h34m48.14s +10°32'20.00"
AC 4.2 13.9 66.6'' 18° 2014
CD 13.9 14.6 4.1'' 339° 2015
Robert Zebahl
Leipzig (Germany)
70mm (57x) AB: Easy to separate with relatively close components and a clear difference in brightness. A appeared rather white, B slightly orange.
Stefan Loibl
Rosenheim (Germany)
102mm (102x) AB: sparse field
Frederik Wanink
Itterbeck (Germany)
254mm (640x) AB: getrennt, Del Ser ../projects/doublestars/frederik_wanink/sketches/STF1954.jpg
STT298 AB-C 6.9 7.8 120.4'' 328° 2017 Boo 15h36m02.22s +39°48'08.90"
Robert Zebahl
Leipzig (Germany)
102mm (28x) Wide, moderately unequal pair. Little difference in color: Primary components appeared a bit more orange colored.
Robert Zebahl
Leipzig (Germany)
120mm (23x) Easy to split with large angular distance and noticeable difference in brightness.
STT298 AB 7.2 8.4 1.3'' 187° 2017 Boo 15h36m02.22s +39°48'08.90"
Mark McCarthy
Fremont (California/USA)
203mm (205x) At zenith, but worth the effort to slew to. Another great 2+1. The tight pair [AB] is near equal and split a little more than a hairline
Mark McCarthy
Fremont (California/USA)
203mm (205x) At zenith, but worth the effort to slew to. Another great 2+1. The tight pair (AB) is near equal and split a little more than a hairline split.
Mark McCarthy
Fremont (California/USA)
317mm (553x) One component of compicated 6 star system, some of which is split in 80mm finter. This is a close equal pair, ~2".
STF1963 AB 8.5 8.8 5.3'' 298° 2017 CrB 15h37m53.73s +30°06'10.40"
Mark McCarthy
Fremont (California/USA)
317mm (340x) 81 Vir: Well split close pair of yellow stars about equal magnitude
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal white, ~6"
★★ STF1964 AC 8.1 8.1 14.5'' 90° 2017 CrB 15h38m12.91s +36°14'48.60"
CD 8.1 9.0 1.6'' 21° 2017
Rene Merting
Drachhausen (Germany)
100mm (20x) AC: bei 20x ein gut getrenntes Pärchen gleich heller Sterne, auffallend im Sternumfeld
Robert Zebahl
Leipzig (Germany)
102mm (62x) AC: Rather wide pair, equal without visible difference in color.
Uwe Pilz
Leipzig (Germany)
105mm (16x) Dreifachstern nicht trennbar
Robert Zebahl
Leipzig (Germany)
120mm (23x) AC: Nice double star, well split with equally bright components.
Mark McCarthy
Fremont (California/USA)
317mm (277x) AC: Well split equal pair. I suspect B is pair as it is an elongated orange smear at 277x -- it is STF 1964CD.
Mark McCarthy
Fremont (California/USA)
317mm (553x) CD: Split, light orange 1 delta mag pair
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint near equal pair about 3" separation. In the same field with HU 1167. Magnificent
★★ HU1167 AB 8.1 9.9 1.3'' 82° 2015 CrB 15h38m12.91s +36°14'48.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright star with much fainter pair, about 1" separation, 3-4 delta mag. In same field with STF 1964. Magnificent
STF1965, zeta 2 CrB 5.0 5.9 6.4'' 306° 2018 CrB 15h39m22.68s +36°38'09.00"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x ein knapp getrenntes deutlich helleres Pärchen als der 27' südwestlich stehende Doppelstern STF 1964 - Komponente B ist gut eine Größenklasse schwächer als A - beide Komponenten schmiegen sich meist noch aneinander, aber in guten Momenten sind beide getrennt sichtbar - zurück auf 20x ist ein länglicher Stern erkennbar
Robert Zebahl
Leipzig (Germany)
102mm (28x) At 28x very tight and barely split, unequal. At 86x very nice view. No difference in color: both components appeared white.
Robert Zebahl
Leipzig (Germany)
120mm (48x) Very nice double star, well split with noticeable difference in brightness.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Bright white, well separated, ~1 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice bright white pair, wide, half a delta mag.
STF1989, pi UMi 7.3 8.2 0.7'' 23° 2013 UMi 15h39m38.61s +79°58'59.60"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) blickweise als 8 zu sehen, schwierig ../projects/doublestars/frederik_wanink/sketches/pi2Umi.jpg
STT300 6.3 10.1 15.0'' 261° 2014 Ser 15h40m10.35s +12°03'10.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange-yellow with wide separation bluish B, 3 delta mag.
STF1967, gam CrB 4.0 5.6 0.6'' 111° 2012 CrB 15h42m44.57s +26°17'44.30"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Definite mis-shape, oval to egg, observation made June 2019
Mark McCarthy
Fremont (California/USA)
203mm (667x) Gamma CrB. Definite mis-shape, oval to egg.
STF1970, bet Ser AB 3.7 10.0 30.0'' 264° 2015 Ser 15h46m11.21s +15°25'18.90"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Very wide separation, white A and bluish B. B looks like a planet reflecting A's light. 5 delta mag.
★★ STT301 7.5 10.4 4.0'' 27° 2017 Boo 15h46m13.64s +42°28'06.30"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Wide magnitude difference, ~4 delta mag. B is faint but well split, ~5"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Wide mag difference, ~4 delta mag. B is faint but well split, ~5".
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wow. Relatively bright A, orange, with a very faint B which shimmers and sparkles to view with averted vision and held with direct. B star is small, 4-5 delta mag, 6-8"
★★ STF1973 7.6 8.8 30.8'' 320° 2015 CrB 15h46m24.50s +36°26'45.60"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x sind beide Sterne gut getrennt erkennbar - schöner Farbkontrast zwischen beiden ungleich hellen Sternen
Uwe Pilz
Leipzig (Germany)
105mm (53x) blaugrün-orange, trennbar bei 15x ../projects/doublestars/uwe_pilz/sketches/stf1973.jpg
Robert Zebahl
Leipzig (Germany)
120mm (23x) Nice double star, easy to split with noticeable difference in brightness.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide, 1 delta magnitude white.
EIS1 AB 7.5 11.9 17.7'' 353° 2017 Ser 15h48m09.46s +01°34'18.20"
Mark McCarthy
Fremont (California/USA)
203mm (333x) White A with wide and much fainter B. CDSA says: "Local, solar type double with BY Dra type variable."
STF2034 7.7 8.0 1.1'' 110° 2017 UMi 15h48m43.02s +83°37'10.50"
Robert Zebahl
Leipzig (Germany)
102mm (187x) At 187x clearly elongated, partly visible as '8' with slight difference in brightness. At 280x two distinct, slightly overlapping Airy disks visible.
BU621 7.9 9.4 0.7'' 26° 2014 Boo 15h49m49.96s +44°31'19.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) nice, split with seeing, 2 delta mag, very close, very slightly orange and yellow stars.
ES1554 11.0 11.2 4.9'' 2016 Boo 15h49m51.07s +43°50'42.10"
Mark McCarthy
Fremont (California/USA)
508mm (667x) near equal but wide separated stars, 10th 11th mag.
STF1982 9.9 10.1 4.9'' 300° 2017 Boo 15h49m51.25s +42°47'19.60"
Mark McCarthy
Fremont (California/USA)
508mm (667x) near equal wide separated orange stars.
SKF1311 5.3 10.3 74.8'' 300° 2015 Ser 15h50m17.55s +02°11'47.50"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Cool. Bright yellow-orange star broken up by seeing and with a water vapor glow (sky is deteriorating). Much fainter B star hanging at edge of halo.
HJ574 AB 9.3 12.3 15.8'' 94° 2015 CrB 15h50m18.44s +32°24'22.40"
Mark McCarthy
Fremont (California/USA)
508mm (667x) light orange star with two rather fainter in a near line, fainter one (AB) closer in (further is AC).
BU810 9.1 10.8 1.6'' 86° 2009 Her 15h51m00.24s +42°27'59.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Very cool, light orange and blue, close but very good split. 2 delta mag.
COU1447 11.0 11.3 2.3'' 297° 2015 CrB 15h51m14.02s +38°36'27.80"
Mark McCarthy
Fremont (California/USA)
508mm (667x) nice pair, equal, well separated, faint.
STT302 AB 7.2 10.4 28.6'' 51° 2015 CrB 15h54m56.85s +34°21'45.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint pair, pretty close, ~2”.
HO399 7.7 10.5 3.7'' 117° 2015 CrB 15h55m25.81s +29°32'13.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Relatively bright A star with very faint pair, need averted vision to notice, ~4" separation and 4-5 delta mag
STF1988 7.6 7.8 1.8'' 250° 2018 Ser 15h56m45.53s +12°28'40.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal yellow-white pair, ~2".
HJ577 9.3 10.5 9.4'' 13° 2015 CrB 15h56m48.71s +35°30'15.60"
Mark McCarthy
Fremont (California/USA)
508mm (667x) wide separated orange-yellow and blue, 1 delta mag. nice
COU803 11.1 11.2 1.6'' 217° 2015 CrB 15h56m52.06s +32°44'11.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) very fine, very nice pair, equal, well separated close pair.
STF1987 7.3 8.7 10.4'' 320° 2017 Ser 15h57m14.92s +03°24'19.20"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x ein schön eng zusammen stehendes Pärchen - Komponente B im Nordwesten ist über eine Größenklasse schwächer und dadurch leicht blau-grau gegenüber der weißen A-Komponente
STT303 AB 7.7 8.1 1.6'' 174° 2018 Ser 16h00m54.16s +13°16'18.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal white, ~1.5". Nice!
STT304 AB 6.8 10.6 10.4'' 173° 2015 CrB 16h00m54.94s +39°10'39.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) yellow-orange, bright, with wide sep 3 delta mag pair.
S676, rho CrB 5.5 10.5 141.7'' 47° 2012 CrB 16h01m02.65s +33°18'12.60"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Rho CrB. bright orange star with very obvious wide B, 3 delta mag
AG200 10.6 10.9 3.1'' 217° 2018 CrB 16h01m09.14s +39°36'11.80"
Mark McCarthy
Fremont (California/USA)
508mm (667x) light orange yellow, fine, well split 3" equal.
TDS797 11.4 11.8 0.9'' 86° 2015 CrB 16h02m25.87s +35°53'56.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) two near equal very faint stars resolve from haze with averted vision.
STF2000 8.4 9.2 2.6'' 228° 2017 Ser 16h03m02.17s +13°59'28.80"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 107x ein knapp getrenntes Pärchen, Komponente B südwestlich etwas schwächer - bei 142x wird der Anblick nicht wirklich besser
STF2004 9.5 10.3 1.8'' 278° 2015 CrB 16h03m12.42s +28°51'06.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Nice airy disks. Orange stars 1 delta mag, well split, very pretty
HJ581 12.0 12.1 21.2'' 56° 2015 CrB 16h04m14.01s +32°22'10.90"
Mark McCarthy
Fremont (California/USA)
508mm (667x) faint wide near equal.
WNO47 6.7 12.9 70.0'' 280° 2015 CrB 16h04m56.79s +39°09'23.40"
Mark McCarthy
Fremont (California/USA)
508mm (205x) Tried but did not see faint B star in 8", so switched to 20". Wide split and faint. nothing too special visually, but intellectually, according to the Cambridge Double Star Atlas: "Local, high CPM, low mass double, AB: ps = 13,70 AU (2000)
Mark McCarthy
Fremont (California/USA)
508mm (205x) Did not see faint B star in 8", so switched to 20". Wide split and faint. nothing too special visually, but intellectually interesting, per CDSA: "Local, high CPM, low mass double, AB: ps = 13,70 AU (2000).
H3 7, bet 1 Sco AC 2.6 4.5 13.6'' 20° 2018 Sco 16h05m26.23s -19°48'19.40"
Christopher Hay
Seeheim (Germany)
15x45 Stabilised binoculars, handheld. Difficult handheld in this instrument, but clearly split and attractive as such. Tripod mounting would surely help and make the difference for a nice pair for this magnification. One of the earliest doubles split, found by Benedetto Castelli in 1627, but according to Stelledoppie not a physical double (in contrast to the very tight BU 947 AB pair in the system, which is physical, with a separation of 0.3” in 2020 and 0.4” in 2030 – and the wide PWL 9001 AD pair with a separation of 518” – A, B and D are thus a physical triple). “H“ in the catalogue name means that this double star is listed in the catalogue of W. Herschel. The 3 in the name means that it is a double star of the 3rd Class [separation 5'' - 15''] in Herschel’s system.
STF2007 AB 6.9 8.0 38.6'' 322° 2018 Ser 16h06m02.82s +13°19'15.50"
Rene Merting
Drachhausen (Germany)
16x70 gut getrenntes Sternpaar - Komponente B im Nordwesten ist deutlich schwächer und schmutzig grau gegenüber der weißen A-Komponente
Mark McCarthy
Fremont (California/USA)
80mm (13x) Split in finder. Two yellow stars, 2 delta mag, wide.
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x weit getrennt, B nordwestlich dürfte gut eine Magnitude schwächer sein - tolle Farben, A ist gelblich, B strahlt orange
STF2011 AB 7.9 10.2 2.7'' 67° 2015 CrB 16h07m38.27s +28°59'43.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White and reddish 3 delta mag, ~2".
Mark McCarthy
Fremont (California/USA)
508mm (667x) Fine pair, 2 delta mag, blue white and dull b almost brown.
STF2010, kap Her AB 5.1 6.2 27.0'' 14° 2018 Her 16h08m04.55s +17°02'49.20"
Rene Merting
Drachhausen (Germany)
16x70 ein eng stehendes Pärchen mit einem leichten Farbkontrast, weil Komponente B im Norden mindestens eine Größenklasse schwächer erscheint - dadurch wirkt B gegenüber nicht rein weiß, sondern dumpf grau-weiß
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x leicht zu trennen - zwei richtig helle Sterne, B im Norden eine halbe Größenklasse schwächer - bei 64x schöner Farbkontrast, Komponente A satt gelb, B weiß mit einem Stich ins orange
COU1276 10.9 12.9 2.7'' 55° 2006 CrB 16h08m52.28s +37°58'00.80"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Good find, B star only visible averted vision, flashes out obvious and clear.
STF2015 AB 8.2 9.5 3.1'' 160° 2018 Her 16h08m54.75s +45°21'11.80"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 107x ist Komponente B südlich von A knapp getrennt erkennbar - Helligkeitsunterschied eine knappe Größenklasse, dadurch wirkt B nicht ganz so reinweiß wie A
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very fine orange-yellow A and a more orange B, 1.5 delta mag, ~3"
TDS9780 11.3 11.7 0.9'' 47° 1991 CrB 16h10m19.66s +35°05'56.40"
Mark McCarthy
Fremont (California/USA)
508mm (667x) B star shows itself only with averted vision. Very faint. Tight but well split
STT307 7.7 10.7 17.5'' 201° 2015 Her 16h10m31.74s +47°48'25.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and very wide 3 delta mag B
STF2025 8.0 9.8 2.6'' 164° 2015 Her 16h11m11.71s +47°33'36.10"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 107x wird mit viel Konzentration Komponente B südlich von A ganz knapp getrennt und wie ein Schatten bzw. wie eine zarte Andeutung erkennbar - bei 142x habe ich vergeblich versucht, B noch einmal zu erblicken - schwer
Mark McCarthy
Fremont (California/USA)
317mm (553x) Unrelated wide near equal white pair split in finder, but one has a very faint ~2 delta mag 2-3" companion and is the AB pair. Nice!
STT305 AB 6.4 10.2 5.7'' 263° 2017 CrB 16h11m39.60s +33°20'33.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange star and faint blue B, wide.
Mark McCarthy
Fremont (California/USA)
508mm (667x) Yellow orange and blue, wide, 2 delta mag Pretty. (Did not notice 13th mag AC)
STF2024 5.9 10.7 22.8'' 44° 2011 Her 16h11m47.60s +42°22'28.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty orange and blue wide pair, 3 delta mag. B almost blinks like a planetary nebula.
HJ260 11.4 13.3 19.8'' 27° 2015 CrB 16h11m50.72s +37°25'00.30"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Wide faint near equal
H5 6, nu Sco AC 4.3 6.6 41.4'' 337° 2018 Sco 16h11m59.74s -19°27'38.30"
Christopher Hay
Seeheim (Germany)
15x45 Stabilised binoculars, handheld. Widely separated. Nice pair reminiscent of Beta Lyrae at 10x. Also split clearly in stabilised handheld 10x42, but view not as pleasing as in 15x45.
STF2016 8.5 9.6 7.6'' 148° 2017 Her 16h12m07.05s +11°54'39.20"
Only 11 arcminutes northwestward is the pretty bright planetary nebula IC4593.
Robert Zebahl
Leipzig (Germany)
120mm (40x) SQM-L 20.6: Split at 40x with obvious difference in brightness. At 75x easily split.
STF2030 7.9 10.2 5.7'' 239° 2018 Her 16h12m43.21s +40°46'54.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice yellowish pair, 3 delta mag, wide B
STF2022 6.5 10.0 2.2'' 154° 2015 CrB 16h12m45.46s +26°40'14.00"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Nice tight split, ~2". Large delta mag. At 8" noticed the B star with averted vision but could hold
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow orange and blue pair. B is much fainter, 3-4 delta mag, ~1.5"
STF2021, 49 Ser AB 7.4 7.5 4.1'' 358° 2018 Ser 16h13m18.45s +13°31'37.20"
Robert Zebahl
Leipzig (Germany)
70mm (57x) Lovely split. Almost equal pair with relatively close components.
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 32x zeigen sich zwei gleich helle weiße Sterne, die sich gerade noch berühren - bei 64x dann knappe Trennung, B ist nur minimal schwächer
Mark McCarthy
Fremont (California/USA)
317mm (553x) Equal yellow-white stars, ~4".
STF2029 8.0 9.6 6.1'' 188° 2017 CrB 16h13m47.82s +28°43'55.90"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Wide split, ~2 delta mag, pretty, faint pair.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice red-orange and B ~5" 2 delta mag.
Mark McCarthy
Fremont (California/USA)
508mm (667x) Slightly yellow and blue stars, wide
POP103 10.8 13.3 3.9'' 54° 2015 CrB 16h13m59.63s +35°10'16.10"
Mark McCarthy
Fremont (California/USA)
508mm (667x) B star noticed & seen better averted vision but can hold direct. Wide split, 2 delta mag.
sigma CrB, 17 CrB, STF2032 AB 5.6 6.5 7.3'' 239° 2018 CrB 16h14m40.85s +33°51'31.00"
Robert Zebahl
Leipzig (Germany)
70mm (22x) At 22x clearly separated, but very close with a clear difference in brightness. At 57x easy without any noticeable difference in color.
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 20x zwei knapp zusammenstehende Sterne mit tiefer Einschnürung - bei 32x dann ein knapp getrenntes Pärchen - B-Komponente südwestlich gut eine halbe Größenklasse schwächer - beide Sterne mit weißem Brautkleid
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice wide white, ~1 delta mag.
Mark McCarthy
Fremont (California/USA)
508mm (667x) Sigma CrB. AB nice bright half delta mag wide. two more stars in system, one (AC) closer fainter, other (AD) further away.
STF2026 AB 9.5 9.9 3.6'' 17° 2018 Her 16h15m57.07s +07°21'24.80"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 64x sind die Sterne so schwach, dass ich hellere Sterne im Umfeld zum Fokussieren nutzen muss - beide Komponenten sind als 8 erkennbar, die Einschnürung ist aber nur in guten Momenten da - bei 107x dann gelingt die Trennung, B wirkt deutlich schwächer (in Wirklichkeit ist B nur 0m4 schwächer), aber vielleicht liegt es daran, dass die beiden Sterne ohnehin nur sehr schwach beobachtbar sind - das hat wenig Freude bereitet
ENG56, 15 Her AB 7.4 10.6 61.9'' 252° 2015 Her 16h15m59.88s +11°25'30.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and very wide 3 delta mag B. A 3rd star making a triangle, it is a triple system
HJ584 10.2 13.5 15.4'' 200° 2015 CrB 16h17m44.07s +39°14'25.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) A star is orange, B a little blue, faint. Good wide split, obvious.
HU1172 10.0 10.1 1.7'' 328° 2018 CrB 16h18m47.11s +31°53'51.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) nice near equal well spit pair, whitish yellow
STF2037 9.8 9.9 1.1'' 256° 2017 Her 16h18m49.03s +17°23'58.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very small elongated haze with two brightenings resolving to points with seeing.
TDS9841 12.5 13.3 2.6'' 350° 1991 CrB 16h19m51.32s +27°27'38.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Very faint pair but with averted vision could notice and then hold direct. Half delta mag, wide
COU981 11.3 11.4 1.1'' 132° 2015 CrB 16h19m55.21s +35°59'35.40"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Marginal with poor transparency and nearly full moon. It's a little too hazy to be sure, but there is certainly an elongation in that haze, or rather the haze is large enough to contain the two stars.
KUI72 5.5 10.0 2.1'' 127° 1997 Her 16h19m55.24s +39°42'30.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Distinct faint point appears with perfect seeing ~2-3". Much smaller and fainter than A.
gamma Her, 20 Her DRS58 AD 2.9 8.1 8.3'' 176° 2010 Her 16h21m55.24s +19°09'10.90"
SHJ227 AB 3.8 10.1 43.3'' 226° 2013
SHJ227 BC 10.1 13.3 82.0'' 298° 2015
Robert Zebahl
Leipzig (Germany)
102mm (280x) AD: It is already the second attempt at this double star. There was nothing perceptible at the best of intentions, which indicates a double star.
Mark McCarthy
Fremont (California/USA)
317mm (277x) AB: Bright white and much fainter bluish B, wide separation.
Mark McCarthy
Fremont (California/USA)
317mm (553x) AB: Gamma Her: Bright and 4x dimmer B, wide separation.
STFA29, nu 1 CrB AB 5.4 5.6 354.7'' 164° 2011 CrB 16h22m21.42s +33°47'56.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nu 2 CrB. Wide separation carbon star pair.
STFA29, nu 1 CrB AD 5.4 11.5 277.1'' 153° 2002 CrB 16h22m21.42s +33°47'56.90"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Nu 1 CrB. Nice bright orange finder split. AD is a wide faint star in the scope
PKO15 11.0 12.2 2.5'' 32° 2015 CrB 16h22m38.86s +38°18'29.20"
Mark McCarthy
Fremont (California/USA)
508mm (667x) This is the fainter pair discussed in the last entry (KU 53). Faint, well split but closer. A star light orange, B bluish white. faint a bit hazy.
KU53 10.4 11.1 5.3'' 49° 2017 CrB 16h22m54.07s +38°15'28.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Double-double in field, this is the equal pair brighter white, wide. The other (PKO 15) is faint, 1 to half delta mag, closer together.
H5 38 6.4 9.8 31.1'' 16° 2015 CrB 16h22m56.50s +32°19'58.80"
Mark McCarthy
Fremont (California/USA)
508mm (333x) 23 Her. wide pair, white and 3 delta mag pair.
STF2040 8.1 10.1 7.0'' 312° 2015 Her 16h23m05.73s +13°50'23.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Slightly orange A, 3 delta mag B. Wide separation
BU951 AB-C 9.3 10.1 1.0'' 32° 2014 CrB 16h23m32.23s +33°21'27.80"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Wow seeing is amazing getting airy disks 20 inch 667x, orange and blue stars, very nice split, dare I say wide (AB is near equal 0.1" pair, try again to notice out of round)
★★ STF2054 AB 6.2 7.1 0.9'' 351° 2018 Dra 16h23m47.19s +61°41'47.00"
Robert Zebahl
Leipzig (Germany)
70mm (133x) Not split in any way.
Robert Zebahl
Leipzig (Germany)
102mm (160x) Immediately visible as a double star. The diffraction disks overlapped slightly. The difference in brightness was clearly visible. Together with the nearby double star eta Dra in the same field of view, the sight was highly fascinating, as both double stars are very different in their appearance. ../projects/doublestars/robert_zebahl/sketches/2019-06-25_stf2054.jpg
Uwe Pilz
Leipzig (Germany)
105mm (198x) verformte Beugungsscheibe, auf den ersten Blick erkennbar ../projects/doublestars/uwe_pilz/sketches/stf2054.jpg
Frederik Wanink
Itterbeck (Germany)
254mm (640x) getrennt
★★ STT312, eta Dra, 14 Dra AB 2.8 8.2 4.4'' 143° 2015 Dra 16h23m59.51s +61°30'50.70"
Robert Zebahl
Leipzig (Germany)
70mm (133x) Not split in any way.
Robert Zebahl
Leipzig (Germany)
102mm (160x) Easy. Very large difference in brightness. The faint companion appeared as a tiny star outside the first diffraction ring of the primary component. Highly recommended, especially with the nearby double star STF 2054! ../projects/doublestars/robert_zebahl/sketches/2019-06-25_eta_dra.jpg
STF2044 8.4 8.8 8.2'' 341° 2017 CrB 16h24m10.41s +37°02'11.90"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x stehen die Sterne sehr dicht, aber schon getrennt sichtbar - Komponente B nordöstlich strahlt nur etwas schwächer, schätzungsweise eine halbe Größenklasse
Mark McCarthy
Fremont (California/USA)
317mm (553x) Fine faint disks, nearly equal mag, wide separation, white.
Mark McCarthy
Fremont (California/USA)
508mm (333x) Nice orange and slightly blue stars, well split, near equal
★★ TDS9883 11.7 11.9 0.8'' 299° 1991 CrB 16h24m38.78s +31°59'42.90"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Very extraordinarily fine, only at the best moments, a very close pair hairline split, very faint.
BU625, ome Her AC 4.6 11.8 25.4'' 88° 2015 Her 16h25m24.93s +14°02'00.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Omega Her: Bright white and much fainter B, ~5 delta mag, wide.
★★★ rho Oph, 5 Oph H2 19 AB 5.1 5.7 3.0'' 334° 2017 Oph 16h25m35.03s -23°26'47.00"
H2 19 AC 5.1 7.3 149.2'' 2000
H2 19 AD 5.1 6.8 156.4'' 252° 2000
KOU63 CF 5.8 11.7 4.8'' 206° 2000
BU1115 DE 6.8 8.4 0.2'' 200° 2017
Stefan Loibl
Rosenheim (Germany)
102mm (102x) AB: possible components (DE) and (CF) already visible at 27x magnification with ca. 2 arcmin distance
STF2049 7.3 8.1 1.1'' 195° 2017 Her 16h27m54.63s +25°59'03.40"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Suspected elongation at 205x, split clean at 333x. Blue B, dull white A, 1 delta mag. Nice!
STF2048 AB 6.6 9.7 5.6'' 297° 2015 Oph 16h28m48.99s -08°07'43.20"
Rene Merting
Drachhausen (Germany)
100mm (107x) schlechtes Seeing bzw. unerwartet heftiger Tanz der Sterne - erst bei 107x kann ich Komponente B ganz schwach west-nordwestlich von A erkennen - großer Helligkeitsunterschied - die Trennung hat keine Freude bereitet
Stefan Loibl
Rosenheim (Germany)
102mm (102x) nice faint pair, both components orange
STF2052 AB 7.7 7.9 2.5'' 119° 2018 Her 16h28m52.67s +18°24'50.60"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 64x zwei gleichhelle Sterne, die sich gerade so berühren - bei 107x ein knapp getrenntes Pärchen, Komponente B im Südosten ist nur marginal schwächer
Mark McCarthy
Fremont (California/USA)
317mm (277x) Pretty pale yellow-orange pair of equal magnitude, about 2" separation.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal orange, ~3"
STF2051 7.7 9.4 13.7'' 19° 2017 Her 16h29m25.06s +10°35'31.40"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x ist Komponente B schwach nördlich von A erkennbar - Trennung eindeutig, nicht zu knapp - Helligkeitsunterschied 1,5 Größenklassen
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and blue, wide separation, 2 delta mag.
lambda Oph, 10 Oph, STF2055, Marfic AB 4.2 5.2 1.4'' 44° 2018 Oph 16h30m54.84s +01°59'02.80"
Stefan Loibl
Rosenheim (Germany)
102mm (205x) components cannot be split at 205x
Uwe Pilz
Leipzig (Germany)
105mm (288x) schöner Farbkontrast, lohnend. ../projects/doublestars/uwe_pilz/sketches/190721LambdaOph.jpg
Frederik Wanink
Itterbeck (Germany)
254mm (640x) getrennt ../projects/doublestars/frederik_wanink/sketches/Marfic.jpg
STF2059 8.8 8.8 0.4'' 182° 2009 Her 16h30m55.71s +38°03'52.60"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) nicht als DS gesehen
Mark McCarthy
Fremont (California/USA)
317mm (553x) Overlapping disks, notched. Need perfect seeing. This was 1.2" at Struve's discovery, so easier for him to see -- I doubt he would have found it now, near its closest separation. August 2017
SHJ233 7.1 8.3 59.2'' 71° 2017 Her 16h31m30.62s +08°17'38.80"
Rene Merting
Drachhausen (Germany)
16x70 ein weit getrenntes Pärchen mit zwei schwachen aber noch gut erkennbaren Sternen - Komponente B ist gut 1,5 Größenklassen schwächer - unspektakulär
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x ein noch weiter auseinander stehendes Pärchen als der vorher beobachtete HV 127 gut 2,5° südöstlich - Komponente A weiß-gelblich, B um eine Größenklasse schwächer und weiß-grau
STF2056 7.8 9.2 6.7'' 313° 2015 Her 16h31m38.54s +05°26'01.30"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32 ist Komponente B knapp getrennt von A wahrnehmbar - der schwache Stern wirkt eher wie ein Schatten der Schatten von A - 64x ist dann besser und beide Sterne zeigen sich eindeutig getrennt - Helligkeitsunterschied 1,5 Größenklassen, dadurch wirkt B grau-braun gegenüber der weißlichen Komponente A
STF2063 5.7 8.7 16.3'' 197° 2014 Her 16h31m47.23s +45°35'53.80"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x zeigen sich beide Sterne mit ordentlichem Abstand - Komponente B gut 2 Größenklassen schwächer (laut Stelle Doppie sind es sogar 3 Größenklassen) - schöner Farbkontrast, B wirkt rostig braun gegen die warm-weiße Komponente A - zurück auf 20x sind beide Sterne gerade so getrennt erkennbar
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright white 2 delta mag B, wide
STT313 8.0 8.3 0.9'' 129° 2015 Her 16h32m33.19s +40°06'47.70"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) mit Zwischenraum zu sehen ../projects/doublestars/frederik_wanink/sketches/STT313.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Clean split, near equal pair. Nice
STF2061 7.9 10.4 2.4'' 29° 2015 Her 16h33m12.49s +30°54'27.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice yellowish with 3 delta mag. B, ~2"
STF2068 9.0 9.1 4.9'' 254° 2018 Her 16h33m54.99s +47°16'17.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal whitish yellow, wide
STF2062 9.1 10.6 2.4'' 108° 2015 Her 16h34m44.14s +08°45'54.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) B pops into view with seeing, 2-3", 2 delta mag, very fine!
★★★ 16/17 Dra STFA30, 16/17 Dra AC 5.4 5.5 90.0'' 193° 2017 Dra 16h36m13.72s +52°55'27.80"
STF2078, 17 Dra AB 5.4 6.4 3.3'' 104° 2018
Robert Zebahl
Leipzig (Germany)
55mm (27x) STFA30 (AC): Rather wide pair with almost equal components. C component appeared slightly yellowish-orange.
Robert Zebahl
Leipzig (Germany)
55mm (71x) STF2078 (AB): Grand sight! ../projects/doublestars/robert_zebahl/sketches/2019-05-18_16_17_dra.jpg
Christopher Hay
Seeheim (Germany)
80mm (30x) 16 Dra seems more bluish than 17 Dra, the latter seems slightly yellow in comparison and is distinctly elongated. At 84x 17 Dra is cleanly split and such a delightful view together with 16 Dra that I had no desire to ramp up the magnification. All three stars belong to a physical system.
Frederik Wanink
Itterbeck (Germany)
254mm (640x) STF2078 (AB): sehr schönes Dreiersystem ../projects/doublestars/frederik_wanink/sketches/17Dra.jpg
STF2069 7.1 11.0 35.8'' 82° 2015 Her 16h36m22.34s +33°49'18.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Light orange and slightly blue, 2 delta mag, very wide.
STF2082, 42 Her 4.9 11.8 28.9'' 92° 2014 Her 16h38m44.89s +48°55'41.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 42 Her: Bright orange pair 1 delta mag in finder. The brighter star has a 3-4 delta mag very faint bluish companion, wide separation, which is AB.
STF2079 7.6 8.1 16.7'' 91° 2017 Her 16h39m36.33s +23°00'06.10"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x locker getrennt, aber richtig schön bei 32x, dann ein weit getrenntes Pärchen - Komponente B im Osten schätze ich gut eine halbe Magnitude schwächer als A ein - schöne Farbkombination, A ist gelblich-weiß, B ist zinnober
Mark McCarthy
Fremont (California/USA)
317mm (277x) Wide separation, half delta mag. A is yellowish and B slight red tint
Mark McCarthy
Fremont (California/USA)
317mm (277x) Wide separation, yellowish A about 7th magnitude, B about 8th.
STF2084, zeta Her, 40 Her 3.0 5.4 1.6'' 121° 2017 Her 16h41m17.16s +31°36'09.80"
Robert Zebahl
Leipzig (Germany)
102mm (224x) Faint companion as distinct brightening on the first diffraction ring visible. In steadier moments visible as small, round condensation. ../projects/doublestars/robert_zebahl/sketches/2019-06-30_zeta_her.jpg
Robert Zebahl
Leipzig (Germany)
102mm (280x) After a longer, concentrated observation, a permanent brightening of the first diffraction ring of the primary component could be seen at the correct position angle. The brightening appeared only arch-shaped without any noticeable condensation. ../projects/doublestars/robert_zebahl/sketches/2019-06-25_zeta_her.jpg
Uwe Pilz
Leipzig (Germany)
105mm (288x) äußerst schwierig
Uwe Pilz
Leipzig (Germany)
105mm (288x) Bei sehr ruhiger Luft ohne Probleme sichtbar, trotz der störenden Restkoma meines Refraktors ../projects/doublestars/uwe_pilz/sketches/190721ZetHer.jpg
Frederik Wanink
Itterbeck (Germany)
254mm (640x) nicht als DS gesehen
Frederik Wanink
Itterbeck (Germany)
254mm (640x) getrennt ../projects/doublestars/frederik_wanink/sketches/STF2084.jpg
STF2091 8.4 9.3 0.4'' 324° 2010 Her 16h42m09.74s +41°11'42.90"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) nicht als DS gesehen
Mark McCarthy
Fremont (California/USA)
317mm (553x) I "see" rod shape once I know it is 0.4" separation. Marginal. (This one 1.3" at Struve's discovery, so easy for him! August 2017)
STF2085 7.4 9.2 5.9'' 309° 2015 Her 16h42m26.09s +21°35'34.30"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 32x leuchtet nordwestlich am Stern etwas schwach, kann aber noch nicht getrennt werden - bei 64x sind dann beide Komponenten knapp getrennt erkennbar, B ist deutlich schwächer, etwa 2 Größenklassen - Farbkontrast A weiß / B grau
Mark McCarthy
Fremont (California/USA)
203mm (205x) Interesting white and red stars, wide separation, 1 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Bright A a "ruddy" yellow orange. B about 2 magnitudes fainter, widely separated.
STF2087 AB 8.8 8.9 5.2'' 287° 2015 Her 16h42m34.83s +23°40'01.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal orange, wide, ~5"
STF2083 AB 9.1 9.6 12.8'' 334° 2015 Her 16h42m44.12s +13°36'29.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal wide.
STF2093, eta Her AB 3.6 11.7 116.6'' 267° 2014 Her 16h42m53.76s +38°55'20.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright orange-yellow A, much fainter blue B, very wide separation
STTA149 7.2 8.4 97.4'' 135° 2017 Her 16h43m30.10s +20°42'58.00"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Wide separation, white, A about 6th magnitude, B about 7th
H5 127 7.8 9.0 53.4'' 294° 2016 Her 16h43m38.81s +06°37'06.80"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x weit getrennt - bei 32x eine gelblich strahlende Komponente A im Osten, B westlich ist gut 1,5 Größenklassen schwächer und strahlt folgerichtig nur gräulich-braun
D15 9.0 9.3 0.6'' 335° 2016 Her 16h43m56.29s +43°28'31.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Light orange elongated, with notch, near equal. (0.9" at discovery).
STF2094 AC 7.5 11.7 24.9'' 312° 2015 Her 16h44m10.57s +23°31'02.80"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Wide separation, 1 delta mag, 333x (AC seen, missed the tight A pair 1")
Mark McCarthy
Fremont (California/USA)
317mm (277x) Yellow and much fainter blue wide separation.
Mark McCarthy
Fremont (California/USA)
317mm (277x) ~25" separated, bluish about 3 magnitudes fainter than A
STF2094 AB 7.5 7.9 1.1'' 73° 2018 Her 16h44m10.57s +23°31'02.80"
Mark McCarthy
Fremont (California/USA)
317mm (277x) White-orange pair of equal magnitude, clean split when the seeing stills
STF2097 AB 9.4 9.6 1.9'' 80° 2018 Her 16h44m47.22s +35°44'16.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Four stars in the system, one pair split in 50mm finder but one of these, AB, is a near equal close pair ~2-3"
STT585, 41 Her AB 6.7 10.4 163.1'' 191° 2015 Her 16h44m59.98s +06°05'17.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 41 Her: Orange with very much fainter wide B.
STF2095 7.4 9.2 5.2'' 161° 2015 Her 16h45m05.23s +28°21'28.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice! Yellow and white pair, 2 delta mag, 4"
STF2098 AB 8.8 9.6 14.3'' 145° 2015 Her 16h45m43.47s +30°00'17.20"
AC 8.8 8.8 65.9'' 128° 2015
AD 8.8 11.0 67.6'' 18° 2015
DE 11.0 13.7 5.8'' 268° 2015
Robert Zebahl
Leipzig (Germany)
102mm (86x) Already at 28x the components A, B and C were noticeable at first view. At 86x, component D could also be observed very well. The components are all comparatively far apart. ../projects/doublestars/robert_zebahl/sketches/2019-06-23_stf2098.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) AB: 4 stars in an arc. Assume AB is the closer pair ~1 delta mag. All wide. (5 stars in 5 pairings)
Mark McCarthy
Fremont (California/USA)
508mm (333x) AB: AB, AC, AD, four star system all within a mag of each other, forming a gentle arc. (Actually 5 stars, I missed DE which is 13th mag. Says it's physical -- all 5 are?)
John Raymond
Richmond (Virginia/USA)
Taken in 2017 with 18” Dobsonian. Single images with Canon M3 camera, <30s ../projects/doublestars/john_raymond/photographs/stf2098.jpg
STF2101 AB 7.5 9.4 4.1'' 47° 2015 Her 16h45m48.14s +35°37'50.50"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 64x ist Komponente B noch ein verwischtes Anhängsel an A - bei 107x zeigt sich B dann knapp getrennt von A und deutlich schwächer
Mark McCarthy
Fremont (California/USA)
203mm (333x) Orange-yellow stars well separated ~2 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow and a deeper yellow. There’s an anonymous pair just west of STF 2101, a faint orange pair, looks like a 2+1 system.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Blue-white and slightly red B, 2 delta mag, wide.
SHJ239, 43 Her AB 5.3 9.3 84.1'' 229° 2016 Her 16h45m49.89s +08°34'57.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 43 Her: Bright orange and 4x fainter B, very wide separation.
AG351 10.3 10.7 3.0'' 304° 2017 Her 16h46m16.28s +24°37'33.20"
Mark McCarthy
Fremont (California/USA)
508mm (333x) Pretty, near equal pair, 3" separated, light orange stars. In an asterism which looks like Orion, with these two forming a belt. (Surprise, this isn't physical)
TDT82 11.4 11.4 0.6'' 356° 1991 Her 16h46m45.43s +27°05'26.90"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Tough, seeing and transparency not quote good enough. Suspected elongation at 333x and 667x showed one star pretty clearly but only a haze and elongation where fainter B was.
A227 10.5 10.5 2.1'' 237° 2016 Her 16h46m56.49s +27°00'59.20"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Easy near equal pair, light orange, 2"
STF2096, 19 Oph AB 6.1 9.7 23.9'' 88° 2015 Oph 16h47m09.76s +02°03'52.40"
AC 6.1 11.4 214.1'' 193° 2015
Rene Merting
Drachhausen (Germany)
100mm (20x) AB: bei 20x ein knapp getrenntes Pärchen, Komponente B ist sehr schwach - bei 32x dann deutliche Trennung und ästhetischerer Anblick - der Helligkeitsunterschied zwischen den Komponenten ist enorm, sicherlich mehr als 3 Magnituden
Uwe Pilz
Leipzig (Germany)
105mm (200x) Hauptkomponente gelb-orange ../projects/doublestars/uwe_pilz/sketches/190721_19Oph.jpg
HU666 9.3 13.1 0.5'' 226° 2008 Her 16h47m23.01s +23°00'06.20"
Mark McCarthy
Fremont (California/USA)
508mm (667x) When A star settles down to a disk, the B star is an unresolved haze in the diffraction ring, very faint.
WEI31 AB 9.9 10.1 5.0'' 317° 2018 Her 16h47m35.08s +25°38'21.60"
Mark McCarthy
Fremont (California/USA)
508mm (667x) AB, AC, BC: Two plus one system, the two closest AB nearly equal, AB a little fainter. White to yellowish white. Well separated all of them, surprised Struve missed them
BUP174, 45 Her 5.2 11.2 121.2'' 80° 2010 Her 16h47m46.43s +05°14'48.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright A and very much fainter B, wide separation.
STF2104 AB 7.5 8.8 5.7'' 18° 2018 Her 16h48m41.48s +35°55'19.30"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x zwei dicht zusammen stehende aber gut getrennte Sterne - Komponente B nordöstlich ist deutlich schwächer als A
Mark McCarthy
Fremont (California/USA)
203mm (333x) White A and slightly blue B, well separated, 2 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (553x) White and yellow
Mark McCarthy
Fremont (California/USA)
317mm (553x) 2 delta mag, wide.
★★ 52 Her A1866 BC 9.5 9.6 0.3'' 266° 2012 Her 16h49m14.20s +45°59'00.40"
BU627 A-BC 4.8 8.4 2.1'' 43° 2017
Rene Merting
Drachhausen (Germany)
100mm (142x) BU627 (A-BC): bis 142x probiert, hat nicht funktioniert - der Helligkeitsunterschied ist vermutlich zu groß und das Beugungsscheibchen von A so hell wie BC selbst
Robert Zebahl
Leipzig (Germany)
102mm (280x) BU627 (A-BC): At 160x the faint component is already beginning to be visible as brightening in the first diffraction ring. At 280x the brightening is quite clearly visible and appears partly clear as a small knot in the first diffraction ring.
Uwe Pilz
Leipzig (Germany)
105mm (288x) BU627 (A-BC) ../projects/doublestars/uwe_pilz/sketches/52Her.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) BU627 (A-BC): 52 Her. Very bright white star with a companion disk 2", 4-5 delta mag. Wow! B appears as if it is illuminated by A's light. Did not detect BC, 0.3"
★★ STF2103 AB 5.9 10.0 5.2'' 44° 2015 Her 16h49m34.67s +13°15'40.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White and 4 delta mag B, 4". Nice!
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice! Pretty bright white A, much fainter 5 delta mag B, well separated, looks like a planet.
★★ STF2107 AB 6.9 8.5 1.4'' 107° 2018 Her 16h51m50.10s +28°39'58.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow and orange pair, very close ~1.5", 1 delta mag. Very pretty.
Mark McCarthy
Fremont (California/USA)
508mm (667x) Nice pair yellow and slightly blue two delta mag, about 1.5" (AC is 11.5 and much further separated)
BU1454, 53 Her 5.4 12.5 75.4'' 64° 2014 Her 16h52m58.12s +31°42'06.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Brighter yellow-orange and much fainter bluish B, ~4 delta mag, very wide.
STF2109 7.5 10.3 5.9'' 313° 2015 Her 16h53m45.78s +21°10'22.60"
Mark McCarthy
Fremont (California/USA)
203mm (205x) Well separated, around 2 delta mag. Surprisingly interesting pair.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Orange-yellow and much fainter B, wide separation
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and slightly green-blue, wide ~10", 4 delta mag.
Mark McCarthy
Fremont (California/USA)
508mm (667x) Yellow A and very light blue three delta mag wide separation B.
FOX196, 54 Her AC 5.5 12.5 88.4'' 318° 2015 Her 16h55m22.24s +18°25'59.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 54 Her: Very faint, averted vision only B, pretty wide split to west.
STF2118, 20 Dra AB 7.1 7.3 0.9'' 65° 2018 Dra 16h56m25.32s +65°02'20.60"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) sehr einfach ../projects/doublestars/frederik_wanink/sketches/20Dra.jpg
STT318 7.0 9.6 2.9'' 243° 2015 Her 16h56m39.66s +14°08'24.90"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x zeigt sich das Pärchen in guten Momenten knapp getrennt - bei 107x wird Komponente B besser sichtbar, er wirkt gräulich wie ein halbdurchsichtiger Geist - die Trennung ist nun eindeutig, aber immer noch knapp - großer schwer einschätzbarer Helligkeitsunterschied zwischen A und B, gut 2,5 Größenklassen Differenz habe ich in der Nacht geschätzt, Treffer
Joerg S. Schlimmer
Germany
127mm (136x) Abstand ca. 3"Separation 3" ../projects/doublestars/joerg_schlimmer/sketches/Zeichnung STT318_filtered_96dpi.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty orange pair, 3 delta mag, ~3"
STT340 AB 8.4 9.2 31.4'' 222° 2015 UMi 16h57m18.06s +86°50'40.10"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x ein feines schwaches Sternpaar, mehr als ordentlich getrennt - Komponente A ist creme-weiß, B wirkt grau und ist gut eine halbe Größenklasse schwächer - zurück auf 20-fach sind beide Sterne ebenfalls problemlos erkennbar, die Trennung ist weiterhin ordentlich
STF2112 9.7 10.3 2.1'' 263° 2018 Her 16h58m14.68s +31°47'27.60"
Uwe Pilz
Leipzig (Germany)
105mm (200x) Hauptkomponente grau-weiß ../projects/doublestars/uwe_pilz/sketches/STF2112.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint pair, 1 delta mag, ~2"
TDT163 11.5 12.4 1.2'' 276° 1991 Her 16h58m31.13s +23°50'35.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) I can pick up both stars within a haze using averted vision, one is noticeably fainter than the other. Suspect elongation with direct vision.
TDS846 9.7 11.7 1.3'' 76° 2015 Her 16h58m36.45s +26°37'00.90"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Split very briefly at finest moment, after a lot of shimmer. Near equal to half a delta mag.
HU1279 10.4 11.7 1.6'' 156° 2015 Her 16h59m44.52s +13°19'03.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) very faint, some haze, but at best moments resolved to two points in the elongated haze.
STT322 7.9 10.2 1.4'' 205° 2015 Her 16h59m46.42s +36°55'17.00"
Mark McCarthy
Fremont (California/USA)
203mm (333x) For certain can see it with 20" at 333x, but the star images are bloated due to seeing. The 8" inch mask cleans the image up but the B star is considerably fainter. 3-4 delta mag 1.5" with 333x in 8 inch. B star looks blue.
H4 122, V451 Her 6.3 10.3 18.9'' 238° 2015 Her 17h01m33.05s +14°56'59.00"
Joerg S. Schlimmer
Germany
127mm (136x) high contrast ../projects/doublestars/joerg_schlimmer/sketches/Zeichnung H 4 122_filtered_96dpi.jpg
J739 9.1 10.5 2.8'' 159° 2016 Her 17h01m41.52s +34°59'02.30"
Mark McCarthy
Fremont (California/USA)
508mm (333x) I sensed elongation with the 8 inch mask at 333x, but it was a haze only flashing elongation with averted vision. With the 20 inch the a star resolved, orange, and the B was noticed at 3" but was considerably fainter, I would guess 1.5 to 2 delta mag.
J740 10.2 10.9 2.8'' 224° 2017 Her 17h03m14.59s +34°58'55.60"
Mark McCarthy
Fremont (California/USA)
508mm (333x) Well spilt, obvious at 20" 333x light orange and yellow stars.
STFA33 AB 5.9 6.2 304.9'' 117° 2014 Her 17h03m39.31s +13°36'19.50"
Mark McCarthy
Fremont (California/USA)
80mm (13x) 80mm finder split, equal white.
★★ BU822 AB 6.6 9.9 1.4'' 227° 2010 Her 17h03m52.67s +19°41'25.80"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Bright orange star with a consistent pin-prick point of light, stays still in occasional seeing shimmer. Fainter than PRY 2's B. ~1.5”. In same field as PRY 2, same PA as PRY 2's.
ES634 10.8 11.6 2.1'' 93° 2015 Her 17h04m00.87s +42°11'46.90"
Mark McCarthy
Fremont (California/USA)
508mm (333x) Half delta mag, well split white orange and light orange stars
★★ PRY2 AB 6.2 9.3 1.8'' 227° 2012 Her 17h04m41.34s +19°35'56.70"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Blue-white and slightly reddish B, 3-4 delta mag, 1.5”. Not hard at all! Makes a double-double with BU 822 at 277x
★★ mu Dra, 21 Dra, Alrakis, Arrakis STF2130 AB 5.7 5.7 2.6'' 2018 Dra 17h05m20.20s +54°28'14.30"
BU1088 AC 5.7 13.7 12.6'' 175° 2006
Christopher Hay
Seeheim (Germany)
80mm (100x) In May 2019 neatly split, no colours seen. A physical system with a period of 812 years. Periastron was in 1946, since then the distance is widening to reach 2.7“ in 2025 and 2.8“ in 2030
Robert Zebahl
Leipzig (Germany)
102mm (125x) AB: Easy to separate. Beautiful sight. Components equally bright with no discernible color difference.
Frederik Wanink
Itterbeck (Germany)
254mm (460x) AB: gleich hell ../projects/doublestars/frederik_wanink/sketches/STF2130.jpg
STF2122 6.4 9.7 20.3'' 279° 2015 Oph 17h06m52.94s -01°39'22.00"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x zeigt sich das Pärchen gut getrennt, B segelt sichtbarkeitstechnisch hart am Limit - bei 32x ist Komponente B im Westen weiter sehr schwach bzw. mindestens 2 Größenklassen schwächer - schöner Farbkontrast, weiß-gelb vs. grau-blau
Mark McCarthy
Fremont (California/USA)
203mm (333x) Pale yellow and wide separated B, 2 delta mag.
STT324 6.0 10.7 3.6'' 222° 2016 Her 17h08m00.70s +31°12'22.50"
Mark McCarthy
Fremont (California/USA)
508mm (333x) Very interesting. At 20 inch the a star was orange and bloated with the seeing, did not notice a pair. I used the 8 inch mask which tightened the A star up considerably, then with averted vision could discern a very faint small glow in one particular direction, but could not hold it direct. Back to the 20" and now in good moments I can see the B star quite well, 5 delta mag, bluish. 333x
A1145 6.3 7.8 0.7'' 341° 2016 Oph 17h08m13.65s -01°04'46.10"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Marginal observation of a very faint, very close-in star which briefly resolves as a point and not a flare.
SLE79 AB 12.1 12.3 9.0'' 219° 2015 Her 17h09m09.66s +33°41'32.50"
Mark McCarthy
Fremont (California/USA)
508mm (333x) 12th mag pair not so difficult when widely separated like this. Light orange near equal stars very widely split. Forms a triangle with two other stars. (not a physical pair)
TDT236 11.4 11.6 0.7'' 24° 1991 Her 17h09m19.96s +33°38'32.20"
Mark McCarthy
Fremont (California/USA)
508mm (667x) At very best moments which last just a second, can see the hazy elongation resolve into hairline split. Unequal by a mag. I dare not try higher power. This was one of the triangle stars mentioned in the SLE 79 entry.
eta Oph, 35 Oph BU1118 AB 3.0 3.3 0.5'' 230° 2017 Oph 17h10m22.66s -15°43'30.50"
BU1118 AB-C 2.4 12.3 99.8'' 148° 2012
BU1118 AD 2.4 11.2 101.2'' 281° 2012
DAL52 AE 2.4 11.1 62.7'' 317° 2012
Stefan Loibl
Rosenheim (Germany)
102mm (205x) B component recognizable in the airy disk, E component not visible
SHY713 6.2 7.0 195.5'' 74° 2015 Her 17h11m03.17s +24°14'15.40"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Nice wide 80mm finder split, near equal mag yellow stars.
Mark McCarthy
Fremont (California/USA)
317mm (277x) 80mm Finder split. within half magnitude of each other, yellow-orange, color more apparent at 277x.
STF2142 AB 6.2 9.3 4.9'' 110° 2018 Her 17h11m40.26s +49°44'46.70"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x offenbart der Stern seine Doppelsternseele - östlich von Komponente A ist knapp getrennt ein ganz schwacher Lichtpunkt sichtbar - gut 3-4 Größenklassen Unterschied zwischen den beiden - ein ungleiches Paar, aber schön anzusehen
STF2135 AB 7.6 8.9 8.7'' 195° 2018 Her 17h12m06.06s +21°13'44.40"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 64x ein locker getrenntes Pärchen - Komponente B im Süden halb so hell wie A - zurück auf 32x sind beide Sterne als enges Pärchen erkennbar, nicht zu knapp getrennt - noch weiter zurück auf 20x sehe ich ein längliches Sternchen, Trennung bei dieser Vergrößerung noch nicht möglich
Mark McCarthy
Fremont (California/USA)
203mm (667x) Pretty yellow star with widely separated 2 delta mag bluish B. (Not physical)
Mark McCarthy
Fremont (California/USA)
317mm (553x) Dull orange and almost green B, wide, 2 delta mag.
WFC189 10.0 10.6 6.7'' 302° 2018 Her 17h12m11.20s +21°36'39.20"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Faint near equal half delta mag blush stars, wide
ALI604 9.7 11.9 11.3'' 176° 2017 Her 17h12m57.15s +36°56'17.70"
Mark McCarthy
Fremont (California/USA)
508mm (333x) Orange and slight blue well separated, 2 delta mag.
TDS857 11.5 12.4 1.1'' 198° 1991 Her 17h13m03.99s +35°58'43.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) VZ Her.Tough, faint pair averted brightens the elongated haze, when seeing stills there are points very tight 1"
STF2137 9.2 10.0 4.1'' 145° 2017 Her 17h13m53.67s +15°57'03.20"
Mark McCarthy
Fremont (California/USA)
203mm (667x) V655 Her. B pretty faint, wide separation, white stars.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Easy if faint pair, 1 delta mag, 4"
BU44 AB 9.2 9.7 5.6'' 18° 2018 Her 17h13m55.16s +28°48'09.00"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Two plus one system, the closest (AB) 1 delta mag, the further pair (AC) fainter still. wide all (Not physical)
★★ HO557, AK Her 8.6 12.0 4.5'' 323° 2015 Her 17h13m57.81s +16°21'01.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) B only visible with averted vision. As I drift from averted back to direct the star fades and I can only hold direct for a moment before it disappears. Very interesting effect. ~5” and 4 delta mag.
★★ STF2140, alpha Her, 64 Her, Ras Algethi AB 3.5 5.4 4.8'' 104° 2018 Her 17h14m38.86s +14°23'24.90"
Robert Zebahl
Leipzig (Germany)
55mm (41x) Well split with noticeable difference in brightness.
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 32x ist noch nichts erkennbar - bei 64x wird östlich von Rasalgethi der schwache Begleiter B knapp getrennt sichtbar - A ist strahlend gelb, B mit einer Tendenz zum gelb, eher ein warmes weiß
Uwe Pilz
Leipzig (Germany)
105mm (88x) himmelblau und hellgelb, getrennt bei 53x ../projects/doublestars/uwe_pilz/sketches/191025_alphaHer.jpg
Uwe Pilz
Leipzig (Germany)
105mm (288x) gelb-lachsfarben
Robert Zebahl
Leipzig (Germany)
120mm (100x) Easily split with noticeable difference in brightness. A: intensively orange colored, B: slightly orange.
Mark McCarthy
Fremont (California/USA)
203mm (667x) Rasalgethi. 8" inch mask due to seeing. AB orange and blue 4 delta mag. Faint AD seen very wide separation. pretty star.
Frederik Wanink
Itterbeck (Germany)
254mm (640x) gelblich und bläulicher Stern ../projects/doublestars/frederik_wanink/sketches/AlphaHer.jpg
Mark McCarthy
Fremont (California/USA)
317mm (277x) Rasalgethi, Bright orange A & pale green much fainter B. Very nice!
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright orange and blue-green-grey B.
Jens Leich
Germany
130mm ../projects/doublestars/jens_leich/photographs/Doppelstern_Rasalgethi_Herkules_220719_2159UT_RGB.jpg
STF3127, delta Her, 65 Her AB 3.1 8.3 12.7'' 288° 2013 Her 17h15m01.92s +24°50'22.50"
Robert Zebahl
Leipzig (Germany)
102mm (86x) Easy. Pretty wide apart with large difference in brightness. ../projects/doublestars/robert_zebahl/sketches/2019-06-23_delta_her.jpg
Mark McCarthy
Fremont (California/USA)
203mm (667x) Very bright yellow white A and bluish B at least four delta mag, wide separation. I don't think it would be seen but for the mask tightening A's diffraction
Mark McCarthy
Fremont (California/USA)
317mm (277x) Delta Her: Nice wide pair, good image quality, yellow and lighter yellow
Mark McCarthy
Fremont (California/USA)
317mm (553x) Sarin. Very bright and much fainter B, looks like a planet
SHJ243, 36 Oph AB 5.1 5.1 5.1'' 140° 2017 Oph 17h15m20.78s -26°36'06.10"
AC 5.1 6.5 731.6'' 74° 2000
AD 5.1 7.8 276.9'' 338° 2000
AE 5.1 12.3 38.2'' 313° 2000
Stefan Loibl
Rosenheim (Germany)
102mm (68x) Komponente AB separated at 68x magnification, componente C at greater distance of 12.2 arcmin
HU489 10.4 10.8 1.0'' 36° 2015 Her 17h15m32.00s +20°06'56.80"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Elongation with eight inch mask but not split 667x
★★ STT328, 68 Her 4.7 10.3 4.5'' 56° 2017 Her 17h17m19.57s +33°06'00.40"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Very bright A & much fainter B, fairly widely separated.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint but steadily held B, ~8", 4 delta mag. Nice!!
STF2147 7.1 11.0 3.0'' 93° 2011 Her 17h17m34.65s +28°54'47.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) V944 Her Orange and much fainter B, 3 delta mag, PA to east, wide separation.
HDS2446 4.6 8.5 0.9'' 143° 2010 Her 17h17m40.25s +37°17'29.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 69 Her: Bright A and very faint B, 4 delta mag, well split
HO67 AB 9.2 12.4 8.0'' 276° 2015 Her 17h17m44.24s +35°37'02.90"
Mark McCarthy
Fremont (California/USA)
508mm (667x) barely visible B star with 8" mask so went up to 20, obvious, wide, white and blue star, three delta mag (Missed the COU 993 split 1" 11.3 mag)
BU45 10.0 10.6 4.8'' 291° 2018 Her 17h17m57.85s +32°29'13.40"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Easy pretty wide pair, half delta mag, white stars.
omicron Oph, 39 Oph, H3 25 5.2 6.6 10.0'' 355° 2013 Oph 17h18m00.71s -24°17'12.80"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) Farbkontrast wohl wegen südl.Stellung nicht zu sehen ../projects/doublestars/frederik_wanink/sketches/OmiOph.jpg
TDS860 11.0 11.2 1.6'' 61° 2015 Her 17h18m07.56s +48°03'24.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Easy near equal wide orange stars. well split
★★ HEI246 11.0 11.5 0.7'' 32° 1994 Her 17h18m13.17s +15°58'13.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Wow! very nice just nearly unequal close but well split orange stars. one is obviously fainter than the other but not by much
SLE13 10.1 11.7 11.3'' 310° 2015 Her 17h18m17.06s +19°12'14.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Well separated one delta mag blue white stars. (not physical)
★★★ BU628 9.5 9.6 0.5'' 265° 2010 Her 17h18m22.22s +32°39'38.50"
Mark McCarthy
Fremont (California/USA)
508mm (1067x) Wow split clean, amazing. No resolution at 667x but at 1067x two airy disks, sep by half disk, half delta mag. Remarkable
STTA152 7.7 9.8 52.8'' 47° 2015 Her 17h18m40.24s +21°46'18.70"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x zwei schwache Sterne ordentlich weit getrennt voneinander - B im Nordosten ist gerade so sichtbar und dürfte gut 1.5 mag schwächer sein als A - bei 32x wird die Sichtbarkeit von B besser
STF2154 AB 9.1 10.0 1.7'' 253° 2015 Her 17h18m58.68s +44°07'54.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Pretty light yellow stars, one and half delta mag, wide separation. nice airy disks.
BU630 9.6 11.6 1.5'' 223° 2015 Her 17h19m15.09s +32°20'15.10"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Pretty light orange and bluish stars, well sep 1.5", 2 delta mag.
TDT304 11.7 12.5 3.1'' 130° 2015 Her 17h19m32.83s +33°21'54.90"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Obvious pair if a little faint. wide separation, half a delta mag
TDT309 12.2 12.3 1.0'' 48° 1991 Her 17h19m39.37s +19°46'37.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) very faint, elongated small haze most of the time resolving slightly to balls briefly. very small.
★★★ COU994 9.4 11.2 0.5'' 214° 2011 Her 17h19m44.04s +37°02'37.30"
Mark McCarthy
Fremont (California/USA)
508mm (1067x) At very best moments A presents a perfect disk, and a point resolves within the first faint diffraction ring, very faint and small Amazing.
COU2625 10.5 11.5 2.3'' 2017 Her 17h19m51.27s +18°05'48.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Very fine, again a bit of a haze then second star resolves with averted vision. close but well split 2 sec. seems unequal mag.
★★★ A2088 9.9 10.0 0.4'' 2011 Her 17h20m32.37s +47°38'51.50"
Mark McCarthy
Fremont (California/USA)
508mm (1067x) sharp and clean split in best moments, seeing lasts a couple seconds. Otherwise it's touching disks.
DON832, xi Oph AB 4.4 8.9 4.1'' 27° 2015 Oph 17h21m00.37s -21°06'46.50"
Stefan Loibl
Rosenheim (Germany)
102mm (205x) fainter 9 mag component not visible
RAG9 AB 6.3 11.9 46.3'' 146° 2012 Oph 17h22m51.29s -02°23'17.40"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Light orange star, with some faint stars nearby. (AB seen. AC is 0.7" 11.9/12.0 and definitely worth another look! CDSA: "Local, solar type 1+2 triple with low mass binary companion, sparse field. AB ps = 1,120 AU (2012).")
COU1777 11.5 11.5 0.5'' 46° 2010 Her 17h22m53.41s +47°23'21.90"
Mark McCarthy
Fremont (California/USA)
508mm (1067x) An elongation in a haze, equal, not quite resolving
A2183 7.7 10.6 1.2'' 137° 2017 Her 17h23m30.10s +16°54'10.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Suggestion of a brightening in the diffraction, marginal
STF2161, 75 Her, rho Her AB 4.5 5.4 4.1'' 321° 2018 Her 17h23m40.97s +37°08'45.30"
Robert Zebahl
Leipzig (Germany)
55mm (38x) Very nice view. Easily split with visible difference in brightness. Pretty tight. Component A appeared rather white, B slightly yellowish. The double star forms with two other, fainter field stars a conspicuous, acute-angled triangle, whereby the double star marks the tip.
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 107x sind beide Komponenten klar getrennt erkennbar - Komponente B im Nordwesten ist eine knappe Größenklasse schwächer - A creme-weiß, B kühler weiß-bläulich - zurück auf 64x kann ich den Doppelstern auch schon ganz knapp getrennt erkennen, da war ich wohl nicht mutig genug, dass ich mit 107x begonnen habe
Mark McCarthy
Fremont (California/USA)
203mm (667x) Rho Her. Light yellow white stars 1 delta mag well separated.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright white, 1 delta mag, ~4"
STF2164 AB 8.2 9.8 9.5'' 14° 2018 Her 17h23m44.61s +47°16'14.30"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x ist Komponente B nördlich von A knapp getrennt erkennbar - B ist so schwach, ich habe das Gefühl, der Schlingel will sich hinter Komponente A verstecken - Helligkeitsunterschied gut 1,5-2 Größenklassen
STT329 6.3 9.9 33.5'' 12° 2012 Her 17h24m27.11s +36°57'06.90"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x ist Komponente B ganz schwach erkennbar in einem ordentlichen Abstand zu A - Helligkeitsunterschied knapp 3 Größenklassen (3,5 Größenklassen lt. Stelle Doppie)
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide pair, orange and blue 2-3 delta mag, wide separation
STF2160 6.4 9.3 3.9'' 66° 2017 Her 17h24m33.80s +15°36'21.70"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 64x zeigt sich Komponente B sehr schwach nordöstlich von A, Trennung noch nicht möglich - bei 107x knappe Trennung - B sticht nur mit viel Konzentration hervor, Komponente A ist einfach zu dominant
Mark McCarthy
Fremont (California/USA)
317mm (553x) White with 4 delta mag reddish B. Nice.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright white A, fainter and reddish B, well split.
Mark McCarthy
Fremont (California/USA)
508mm (667x) Pretty light yellow white and slightly blue B, three delta mag, well separated pair.
KUI81, V640 Her AB 6.3 14.9 8.5'' 217° 1958 Her 17h25m54.36s +16°55'03.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) V640 Her: Orange with two much fainter stars in a line, well separated. AB & AC seen. A is on one side, then B, then C.
KUI81, V640 Her AC 6.3 13.8 23.2'' 218° 2014 Her 17h25m54.36s +16°55'03.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) V640 Her: Orange with two much fainter stars in a line, well separated. AB & AC seen. A is on one side, then B, then C.
HEI247 10.5 10.9 2.1'' 103° 2015 Her 17h26m00.60s +14°23'45.40"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Very nice near equal well separated light orange stars.
LBU5 AC 7.3 11.5 49.3'' 259° 2015 Her 17h27m32.79s +16°27'24.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Was trying for A 2184, but it is 2" and 3.26 delta mag, and I did not see. Wide faint pair LBU 5 seen
★★ A2184 AB 7.3 10.6 1.9'' 31° 2015 Her 17h27m32.79s +16°27'24.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Wow! real nice when seeing stills and with some critical focusing the diffraction of the star tightens and the three delta mag B shows on its own as a sharp point well separated and round. Really great view
STF2166 7.2 8.6 27.2'' 282° 2015 Oph 17h27m52.25s +11°23'25.80"
Uwe Pilz
Leipzig (Germany)
105mm (88x) trennbar bei 22x ../projects/doublestars/uwe_pilz/sketches/191025_STF2166.jpg
Mark McCarthy
Fremont (California/USA)
203mm (333x) White and slight off-white wide separation B.
STF2178 AB 7.3 9.1 10.6'' 129° 2018 Her 17h29m28.15s +34°56'19.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and bluish, ~12", 2 delta mag.
BU1089 6.6 9.0 1.4'' 321° 2005 Oph 17h29m47.34s -05°55'10.10"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Very fine point resolves next to a much brighter star. Well separated but a fine sight. With seeing.
STF2181 AB 7.0 10.5 32.9'' 328° 2015 Her 17h31m42.54s +30°19'05.30"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Brighter yellow-red A and two stars, both rather faint, about the same separation but 120 degrees apart in PA.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange with ~2 delta mag pair
STF2181 AC 7.0 12.6 37.7'' 218° 2015 Her 17h31m42.54s +30°19'05.30"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Brighter yellow-red A and two stars, both rather faint, about the same separation but 120 degrees apart in PA.
STT331, V2373 Oph AB 7.7 8.8 1.0'' 351° 2011 Oph 17h32m02.86s +02°49'25.40"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Slight red and pale blue, half delta mag, very tight ~1" (AB). +1 with wide star as faint as B (AC).
★★ STFA35, nu 1/2 Dra, 24/25 Dra 4.9 4.9 62.1'' 311° 2017 Dra 17h32m15.88s +55°10'22.10"
Christopher Hay
Seeheim (Germany)
6x20 Split, but not the fine sight it becomes in the 10x42.
Christopher Hay
Seeheim (Germany)
10x42 Clearly split, components of identical brightness, no colour. One of the finest doubles for 10x.
Rene Merting
Drachhausen (Germany)
16x70 der Doppelstern ist bereits mit bloßem Auge zu erkennen, im FG dann offenbart sich ein ordentlich getrenntes Pärchen zweier gleich heller Sterne
Robert Zebahl
Leipzig (Germany)
102mm (28x) Wide, bright, equal pair. Both components looked cream-white. Due to the distance a double for binoculars.
Christopher Hay
Seeheim (Germany)
125mm (80x) Gorgeous sight, widely split, dominating the FOV. The more northern B-component (=Nu1 Dra = 24 Dra) appears brighter and more yellowish than the A-component (=Nu2 Dra = 25 Dra).
SHY726 7.9 8.6 229.2'' 12° 2015 Oph 17h33m52.81s +08°06'13.50"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Pretty yellowish-white A star and a very wide separated 1 delta mag bluish B.
COU627 9.9 10.9 2.2'' 145° 2012 Her 17h33m55.48s +17°46'40.80"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Great looking orange pair near equal. nice
★★★ COU1594 10.7 10.6 0.5'' 332° 2010 Her 17h33m59.60s +44°28'45.60"
Mark McCarthy
Fremont (California/USA)
508mm (1067x) Needed to wait for seeing but a very extraordinarily fine point resolves with the best seeing, seems much fainter than data but it's definitely there, a hard point.
FUR2 10.8 11.4 2.1'' 51° 2015 Her 17h34m21.47s +39°03'29.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Well separated one delta mag light orange stars
STFA34, 53 Oph AB 5.8 7.5 41.2'' 191° 2018 Oph 17h34m36.69s +09°35'12.20"
Rene Merting
Drachhausen (Germany)
16x70 gut getrenntes Pärchen, bei dem Komponente B im Süden deutlich schwächer und grau gegenüber A wirkt
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x weit getrenntes helles Pärchen, wobei Komponente B im Süden gut 1,5 Größenklassen schwächer - Komponente weiß-gelb, B gräulich
Uwe Pilz
Leipzig (Germany)
105mm (88x) weiß und blaugrau. Trennbar bei 22x ../projects/doublestars/uwe_pilz/sketches/191025_53Oph.jpg
STF2185 AB 7.5 10.3 27.2'' 2015 Oph 17h34m48.53s +06°01'25.80"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Finder split of bright stars, but AB is a faint star to the side of one of these seen in the scope, 2 delta mag, wide (many other pairings. CDSA "High CPM, solar type (2)+1 triple, AB ps = 3,440 AU 2013).")
STF2186 8.2 8.4 3.0'' 78° 2017 Oph 17h35m50.43s +00°59'47.70"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Near equal, well separated.
COU807 10.6 10.6 0.7'' 143° 2008 Her 17h35m54.89s +32°05'25.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) definite elongation but mostly a tiny smear.
STF2190 AB 6.1 9.5 10.4'' 22° 2015 Her 17h35m59.56s +20°59'46.60"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 32x sollten beide Sterne schon getrennt zu sehen sein, es ist aber nur A erkennbar - bei 64x wird B ganz schwach sichtbar, beide Sterne sind schon gut getrennt - B ist so schwach im Vergleich zu A, ich schätze es sind mindestens 3 Größenklassen Unterschied - ein reizendes Pärchen und hier ist ganz klar, wer hier die Hosen anhat
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright yellow A and fainter blue B. Wide separation.
Mark McCarthy
Fremont (California/USA)
508mm (333x) Pretty yellow A and slightly red B, wide, 3 delta mag.
COU1595 8.9 10.7 0.5'' 265° 2010 Her 17h36m29.51s +45°43'13.80"
Mark McCarthy
Fremont (California/USA)
508mm (1067x) Very close, extremely faint B resolves persistently within first diffraction, slightly hazy, with best moments.
ES636 10.5 11.4 2.0'' 124° 2008 Her 17h36m34.70s +41°42'45.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Rather wide separation near equal stars.
POU3299 11.3 12.2 11.5'' 176° 2015 Her 17h36m52.56s +24°16'10.60"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Near equal twelfth magnitude stars, wide. Transparency making them hazy, seeing not perfect. (not physical.)
TDT433 12.1 13.0 1.8'' 105° 1991 Her 17h36m53.83s +23°36'32.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) I can flash an elongation to the smear with averted vision, but that's all, no resolution of the disks. Transparency, seeing, and waxing crescent moon limiting.
AG210 AB 10.1 10.3 4.2'' 189° 2016 Her 17h37m48.70s +22°57'20.10"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Easy pair, wide, striking yellow orange colors, appears near equal not one delta mag as per SkyTools data (FYM 246 AC 14.1 mag 11.2" not noticed, beyond the 20" in these conditions)
POU3302 12.3 12.5 8.6'' 203° 2015 Her 17h37m50.88s +23°23'19.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Easy wide separated, half delta mag, maybe a third not more than half additional distance at ninety degrees, 13th mag [third not in system]
HO69 8.7 12.5 1.9'' 139° 2007 Her 17h38m05.67s +36°55'22.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Very, very faint, slightly hazy round star appears just outside A's first diffraction ring. Very difficult needed to wait for best seeing.
SHJ251 AB 6.4 7.8 110.8'' 328° 2013 Oph 17h39m08.48s +02°01'41.20"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Orange stars, finder split, 1.5 delta mag.
STF2191 AB 7.8 8.5 26.3'' 267° 2015 Oph 17h39m47.28s -04°58'04.80"
Mark McCarthy
Fremont (California/USA)
203mm (667x) Wide separation near equal (AB seen. BC is Ho 419 12.71 7.6" not seen)
TDT458 11.9 12.7 2.6'' 302° 2015 Her 17h40m13.92s +23°17'42.10"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Quite close but well split, ~3", 1 delta mag. [not physical]
BRT2436 10.9 10.9 5.6'' 187° 2015 Her 17h40m25.45s +21°44'19.40"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Obvious pair in center of triangle of stars, half delta mag, pretty wide, ~6" separation.
AG211 9.6 9.8 2.7'' 131° 2016 Her 17h40m37.12s +20°16'44.20"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Wide, half delta mag, white stars. Pretty pair [too bad, not physical]
STTA157 AB 6.4 7.9 118.3'' 106° 2015 Her 17h40m41.23s +31°17'15.60"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Orange and blue, separated in finder.
Mark McCarthy
Fremont (California/USA)
508mm (333x) Very pretty light orange and very wide separated blue, about 1 delta mag. [Aa,Ab is 0.8" 10.3, should have tried for it]
STF2194 AB 6.5 9.3 16.2'' 2018 Her 17h41m05.50s +24°30'47.20"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Orange and light blue, wide separation, ~2 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Pretty orange and blue, 2 delta mag, very wide. 83 Her nearby is a reddish-orange color.
Mark McCarthy
Fremont (California/USA)
317mm (277x) a pretty orange and blue pair, 3 magnitude difference, nicely separated
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and blue, fairly wide, 1-2 delta mag.
STF2203 7.7 7.8 0.8'' 292° 2018 Her 17h41m13.81s +41°39'17.80"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) getrennt ../projects/doublestars/frederik_wanink/sketches/STF2203.jpg
STF2196 10.2 12.2 3.6'' 258° 2015 Her 17h41m37.08s +21°11'14.80"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Faint for a Struve. 10th and 12th mag, two delta mag, about 4" sep. Easily spotted in field.
ROE119 11.5 11.7 4.3'' 325° 2015 Her 17h41m42.33s +28°31'37.40"
Mark McCarthy
Fremont (California/USA)
508mm (333x) Very fine near equal, widely separated, about 4". [not physical]
STF2197 10.6 11.0 8.1'' 359° 2016 Her 17h41m49.76s +21°25'54.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Seems closer mag than SkyTools data. Wide, half delta at the most, near a bright star
★★ STF2241, psi 1 Dra, 31 Dra AB 4.6 5.6 30.1'' 17° 2018 Dra 17h41m56.36s +72°08'55.80"
Christopher Hay
Seeheim (Germany)
15x45 Stabilised binoculars, handheld. Easily split. A appears pearl white, B brick red. A very fine pair for 15x. Resolved in stabilised 10x42 but not so pleasantly. Psi1 Dra is a physical double with a period of roughly 10,000 years.
Rene Merting
Drachhausen (Germany)
16x70 ein auffälliges Pärchen in einem wilden Sterngewimmel vieler heller Sterne, beide Komponenten sind knapp getrennt zu erkennen - Komponente B ist mindestens eine Größenklasse schwächer und strahlt nicht so schön reinweiß wie A
Christopher Hay
Seeheim (Germany)
80mm (30x) Widely split. A light yellow, B light blue.
Uwe Pilz
Leipzig (Germany)
105mm (55x) weiß-orange
BRT2437 10.8 11.0 4.1'' 58° 2015 Her 17h42m12.51s +20°31'33.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Faint, seems more near equal, pretty wide ~4". [not physical]
★★★ COU1596 9.3 9.3 0.2'' 104° 2007 Her 17h42m14.40s +44°22'59.10"
Mark McCarthy
Fremont (California/USA)
508mm (1067x) Olive to notched at best moments, equal stars
STF2198 7.6 11.2 7.7'' 25° 2015 Her 17h42m38.37s +26°33'06.10"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Orange star with very much fainter bluish B, seen at the edge of direct vision, wide.
BRT2438 10.8 11.3 3.1'' 354° 2015 Her 17h42m42.30s +21°38'33.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Faint pair but obvious, wide about 5", half delta mag, bluish stars [not physical]
COU29 11.5 11.5 2.7'' 191° 2015 Her 17h43m02.81s +20°19'24.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) A bit of a smear but well split, bluish points in haze, around equal magnitude. In a kite asterism, the star opposite also looks like a double, similar magnitude a little wider.
A233 8.0 11.4 2.9'' 237° 2016 Her 17h43m10.63s +24°47'10.90"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Yellow star shimmering in seeing, need critical focus to smallest point, then B star barely resolves in still moments a very small faint blue point, ~3" separation. Like a planet illuminated by its sun. Nice!
COU629 11.3 11.8 4.0'' 207° 2015 Her 17h43m12.10s +22°45'19.50"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Pretty, wide separated (~4"), 1 delta mag, bluish stars. Nice!
HU1285 8.9 9.2 0.6'' 215° 2015 Her 17h43m38.76s +22°36'43.20"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) unsicher, sehr schwierig
HJ1303, V624 Her 6.2 11.8 40.1'' 151° 2015 Her 17h44m17.25s +14°24'36.10"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Fairly bright A, wide separation to a faint B.
STF2202, 61 Oph AB 6.1 6.5 20.7'' 94° 2018 Oph 17h44m34.09s +02°34'45.90"
Rene Merting
Drachhausen (Germany)
10x50 ein ausgesprochen schönes knapp getrenntes Sternpaar - beide Sterne sind in etwas gleich hell - Komponente B im Osten ist nicht ganz so weiß wie A
Rene Merting
Drachhausen (Germany)
16x70 ein schön eng stehendes Pärchen, knapp getrennt - Komponente A im Westen ist nur leicht heller als B - beide Komponenten wirken weiß
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x leicht zu trennen - Komponente B im Osten ist nur minimal schwächer (keine halbe Größenklasse, denke ich) - Komponente A stahlt ein wenig wärmer als B
Mark McCarthy
Fremont (California/USA)
203mm (667x) Half delta mag wide separation white.
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/61 Ophiuchi.png
STF2205 9.4 9.6 0.9'' 11° 2016 Her 17h45m41.03s +17°43'00.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Half delta mag light orange star about 1" separated (in this scope it is quite wide)
STT335 8.3 9.2 24.8'' 140° 2017 Her 17h45m54.77s +21°53'17.40"
Rene Merting
Drachhausen (Germany)
16x70 Komponente A ist schwach aber noch gut zu erkennen, B ploppt nur mit etwas Konzentration in einigem Abstand zu A auf - kein schöner Fernglas-Doppelstern, aber machbar
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x ein einfach zu trennender Doppelstern mit schönem augenscheinlichen Farbkontrast - Komponente B im Südosten ist gut eine Größenklasse schwächer und wirkt grau, A dagegen wie ein Prinz in weißer Weste
STF2224, V826 Her AB 6.7 10.0 7.9'' 349° 2015 Her 17h45m58.44s +39°19'21.00"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x ein enges Paar, knapp getrennt - Komponente A strahlt zitronen-gelb, Komponente B im Norden ist mindestens 3 Größenklassen schwächer
Robert Zebahl
Leipzig (Germany)
120mm (100x) Well split, rather close and obviously unequal. Primary component appeared slightly yellowish, secondary still visible with direct vision.
mu Her, 86 Her A-BC 3.5 9.8 35.5'' 249° 2015 Her 17h46m27.51s +27°43'14.30"
Robert Zebahl
Leipzig (Germany)
120mm (86x) A-BC: Easy, pretty wide, unequal pair. A appeared yellowish-orange, BC was barely visible with direct vision.
Mark McCarthy
Fremont (California/USA)
203mm (333x) A-BC: Pretty, bright canary yellow A and much fainter bluish B. Nice! (Missed AC 7 BC which are near equal 0.6")
Mark McCarthy
Fremont (California/USA)
317mm (277x) A-BC: Bright yellow with diffraction spikes and some haze around it (poor transparency). 4 delta mag small star on the edge of the haze, wide separation.
Mark McCarthy
Fremont (California/USA)
317mm (553x) A-BC: Bright white and 3-4 delta mag B, wide.
STF2217 AB 8.8 8.9 7.0'' 285° 2017 Her 17h46m40.19s +14°46'44.60"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Two stars near equal mag white wide (AB), a fainter off to one side of one star (AC)
★★★ HU1288 8.3 9.4 0.4'' 163° 2010 Her 17h47m09.16s +15°02'13.80"
Mark McCarthy
Fremont (California/USA)
508mm (1067x) Awesome! clean split, very clean star images. Split by half disk, half delta mag. very cool great catch! suspected at 667x, ramped up power to 1067x to split.
HEI254 10.4 11.6 2.3'' 274° 2005 Her 17h47m46.02s +16°19'03.20"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Half delta mag orange stars wide separation.
STT336 AD 6.6 10.6 41.0'' 163° 2010 Her 17h47m52.05s +34°16'40.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Fairly bright A, wide and faint B
STF2222 8.4 9.7 2.3'' 63° 2013 Her 17h47m53.16s +14°48'30.50"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 64x ist erkennbar, dass A einen Begleiter nordöstlich hat, eine kleine Einschnürung zeigt sich - beide Komponenten sind relativ schwach - bei 107x ist mit etwas Konzentration Komponente B knapp getrennt von A erkennbar - B ist halb so hell wie A
Mark McCarthy
Fremont (California/USA)
508mm (667x) Yellow-white stars 2 delta mag well separated.
TDT519 11.8 11.9 1.0'' 221° 2015 Her 17h48m54.56s +16°33'10.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Extremely fine pair, brightens and elongated with averted vision but it's better to let the seeing settle down the hazy refraction and can see points of stars.
STF2223 7.6 9.7 18.3'' 211° 2015 Oph 17h48m57.84s +04°58'03.20"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 20x ist südwestlich von Komponente A ist ein deutlich schwächerer Begleiter erkennbar - schönes Pärchen in Peripherie zum mächtig wirkenden Sternhaufen IC 4665
Mark McCarthy
Fremont (California/USA)
203mm (667x) Wide separation 1.5 delta mag.
STF2232 6.7 8.8 6.2'' 140° 2017 Her 17h50m15.00s +25°17'27.60"
Mark McCarthy
Fremont (California/USA)
203mm (333x) Dull white and dull orange, well separated, ~3 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Pretty blue-white pair, 3 delta mag, fairly wide.
Mark McCarthy
Fremont (California/USA)
317mm (277x) a nice white and blue pair, widely separated and 2 magnitudes difference.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty bright A, 3 delta mag B, wide separation
FOX22 10.7 11.3 1.0'' 339° 2010 Her 17h50m41.55s +15°16'15.40"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Half delta mag. actually appears well split, two tiny dots, resolved from haze with seeing. Very cool.
J2117 9.8 12.3 5.1'' 199° 2015 Her 17h50m50.91s +14°59'06.40"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Bluish A, very faint B appears with averted vision at first then can barely hold direct, faint, wide separation (not physical)
STF2242 8.1 8.3 3.4'' 327° 2018 Her 17h51m10.32s +44°54'28.00"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 32x ist ein leicht länglicher Stern sichtbar - bei 64x dann ein ganz knapp getrenntes Pärchen, A im Süden, B im Norden - beide Komponenten sind annähernd gleich hell, ein schönes enges weißes Pärchen
Mark McCarthy
Fremont (California/USA)
317mm (553x) Easy matched yellow pair, ~3"
TDT536 10.4 10.8 1.1'' 61° 2015 Her 17h51m18.78s +17°23'08.70"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Very fine pair, well split, 1 delta mag, yellow white stars. Very tight but a nice wide clean split. Resolves with seeing.
STT338 AB 7.2 7.4 0.8'' 164° 2018 Her 17h51m58.46s +15°19'34.90"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) getrennt
Mark McCarthy
Fremont (California/USA)
317mm (553x) Just split, a pair of bright near equal orange stars.
Mark McCarthy
Fremont (California/USA)
508mm (667x) Yellow-white very clean split stars seem more equal than what the data says
L17 AB 10.5 11.2 2.4'' 291° 2015 Her 17h52m30.76s +15°31'31.00"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Faint half delta mag stars, orange for faintness, wide separation
★★ BU130, 90 Her 5.3 8.8 1.6'' 110° 2009 Her 17h53m18.03s +40°00'28.60"
Robert Zebahl
Leipzig (Germany)
120mm (300x) Not split at 200x and 300x. I used a 120/600mm achromat.
Mark McCarthy
Fremont (California/USA)
317mm (553x) 90 Her. Need stillness, it coalesces from the diffraction to a light orange point at 553x (grey at 885x). No doubt about it, star, point light. For the first 10 minutes of observing seeing allowed me to glimpse it 1 of every 10 seconds. But after a while seeing was better and I could hold it pretty consistently in both magnifications. At 553x it's in the first ring, at 885x it's in the second.
Mark McCarthy
Fremont (California/USA)
317mm (885x) 90 Her. Definite snowman or bulge to the disk, very subtle, but no split, using an apodizing mask.
STF2245 BA 7.4 7.5 2.5'' 111° 2017 Her 17h56m24.24s +18°19'38.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very pretty orange and blue. Alberio like, but fainter and closer together and the stars are about equal magnitude.
Mark McCarthy
Fremont (California/USA)
508mm (667x) Pretty orange and blue seem more equal mag than data, wide separation (MCA 49 Aa,Ab 0.1" not seen!)
HU235 6.9 9.0 1.6'' 286° 2015 Her 17h57m05.08s +45°51'21.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very certain point sitting just outside the diffraction ring, brightens and sharpens with seeing. 2" 2-3 delta mag.
AG357 9.4 10.4 2.9'' 190° 2015 Her 17h57m41.89s +17°06'34.10"
Mark McCarthy
Fremont (California/USA)
508mm (667x) Yellow and burnt orange stars, half a delta mag, wide separation (not physical)
J3268 13.3 13.8 4.0'' 216° 2017 Her 17h58m22.68s +18°14'12.10"
Mark McCarthy
Fremont (California/USA)
508mm (667x) faint but obvious, well separated, near equal. (not physical)
STF2259 7.3 8.4 19.6'' 277° 2017 Her 17h59m03.63s +30°02'56.10"
Rene Merting
Drachhausen (Germany)
10x50 Komponente B ist knapp getrennt westlich von A erkennbar - Helligkeitsunterschied eine halbe Magnitude (1.17 mag laut Stelle Doppie) - der Doppelstern muss sich gegen viele helle Sterne im Umfeld durchsetzen, er wirkt dadurch ein wenig verloren, aber auch filigraner
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and slightly blue tnged B, 2 delta mag, wide, 15" or more.