Double Stars - R.A. 06h-12h

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 305
Visual Observations 467
Sketches 55
Photographs 9
Observers 8
Berthold Fuchs, Christopher Hay, Stefan Loibl, Mark McCarthy, Rene Merting, Uwe Pilz, Frederik Wanink, Robert Zebahl
m1 m2 ρ θ Year Coordinates (J2000)
SIN128 AC 7m3 7m6 2.6'' 193° 1985 Aur 06h01m14.73s +31°32'28.10"
Robert Zebahl
Leipzig (Germany)
70mm (133x) Even at high magnification there are no indications of a double star. Also the brightness seemed to be less than stated!?
BU16, 3 Mon 5m0 8m0 1.9'' 355° 1996 Mon 06h01m50.42s -10°35'52.60"
Uwe Pilz
Leipzig (Germany)
105mm (260x) schwache Aufhellung im ersten Ring ../projects/doublestars/uwe_pilz/sketches/3Mon.jpg
Uwe Pilz
Leipzig (Germany)
105mm (288x) Begleiter schwach ../projects/doublestars/uwe_pilz/sketches/bu16.jpg
STF840 A-BC 7m2 8m9 21.4'' 248° 2014 Ori 06h06m28.04s +10°45'01.00"
Mark McCarthy
Fremont (California/USA)
317mm (170x) Wide blue-white and slightly red pair, 1 delta mag.
STF840 BC 9m8 10m1 0.4'' 126° 1997 Ori 06h06m28.04s +10°45'01.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) B maybe elongated? Not certain.
STT131 7m0 9m4 1.5'' 277° 2012 Aur 06h07m25.84s +36°16'28.70"
Mark McCarthy
Fremont (California/USA)
317mm (270x) Very close, need seeing to resolve 2 delta mag white A and light blue B
STT132 7m2 9m6 1.8'' 332° 2012 Aur 06h08m11.68s +37°58'57.90"
Mark McCarthy
Fremont (California/USA)
317mm (270x) White A and slightly red B. Fine pair. 2 delta mag.
STF844 AB 8m5 9m3 23.4'' 10° 2017 Ori 06h08m18.38s +13°59'50.30"
Rene Merting
Drachhausen (Germany)
18x70 Komponente B steht unmittelbar nordwestlich von A und ist deutlich schwächer
Rene Merting
Drachhausen (Germany)
18x70 Komponente C ist schwächer als B und steht im SO von A, alle drei Sterne bilden eine Linie
BU17 AB 6m9 9m3 3.6'' 189° 2013 Mon 06h08m25.39s -11°08'46.60"
AC 6m9 10m8 10.2'' 260° 2015
BC 9m3 10m8 9.3'' 276° 1998
Uwe Pilz
Leipzig (Germany)
105mm (288x) Dreifachstern! (Burnham 17) ../projects/doublestars/uwe_pilz/sketches/bu17.jpg
STF848 AB 7m3 8m2 2.5'' 111° 2017 Ori 06h08m30.36s +13°58'15.80"
Robert Zebahl
Leipzig (Germany)
70mm (100x) Well split with obvious difference in brightness.
Christopher Hay
Seeheim (Germany)
125mm (100x) When idly viewing NGC 2169, the “37 Cluster” or “IC37”, I noticed that the brightest star in the 37, namely the one at the NW corner of the 3, is a nicely split double with a thin slice of darkness between the components. PA matches the top bar of the figure-3 well. Stelledoppie lists components of STF848 from A to K, but notes that all are either not physical or uncertain. To my eye only the A-B pair appears double-like.
Mark McCarthy
Fremont (California/USA)
317mm (170x) Close bluish pair near the center of the open cluster NGC 2169
STF848 AD 7m3 8m3 28.3'' 122° 2017 Ori 06h08m30.36s +13°58'15.80"
Rene Merting
Drachhausen (Germany)
18x70 Komponente D ist mit etwas Abstand östlich von Komponente A zu erkennen
STF848 AE 7m3 9m0 43.3'' 185° 2017 Ori 06h08m30.36s +13°58'15.80"
Rene Merting
Drachhausen (Germany)
18x70 Komponente E ist schwächer als D und steht südöstlich von A in doppeltem Abstand wie AD
STF848 DH 8m3 10m0 54.0'' 110° 2016 Ori 06h08m32.02s +13°58'01.00"
Rene Merting
Drachhausen (Germany)
18x70 Komponente H ist noch schwächer als D und steht östlich in dreifachem Abstand wie AD
STT134 AB 7m5 9m1 31.0'' 189° 2015 Gem 06h09m15.94s +24°25'40.30"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x zeigt sich südlich von A ein gut 1,5 Magnituden schwächerer Begleiter - ein ordentlich getrenntes Pärchen - im Umfeld nicht sehr auffällig (logisch bei einem Doppelstern in M 35)
STF869 8m2 9m1 24.5'' 280° 2017 Mon 06h10m44.34s -09°51'08.30"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x gut getrennt - Komponente B im Westen ist halb so hell wie A - dadurch leichter Farbkontrast, A weiß, B grauweiß - der Doppelstern ist auffallend, weil im Umfeld nicht viel los ist
STF845, 41 Aur 6m2 6m9 7.5'' 358° 2017 Aur 06h11m36.59s +48°42'39.60"
Robert Zebahl
Leipzig (Germany)
55mm (25x) Relatively tight with visible difference in brightness.
STF877 7m5 8m0 5.7'' 264° 2015 Ori 06h14m42.67s +14°35'10.80"
Robert Zebahl
Leipzig (Germany)
70mm (44x) Well split, but close together. Little difference in brightness noticeable.
★★ BU1008, eta Gem, 7 Gem, Propus 3m5 6m2 1.8'' 258° 2017 Gem 06h14m52.69s +22°30'24.60"
Uwe Pilz
Leipzig (Germany)
105mm (260x) Aufhellung im ersten Ring
Uwe Pilz
Leipzig (Germany)
105mm (288x) sehr schwierig ../projects/doublestars/uwe_pilz/sketches/etaGem.jpg
Robert Zebahl
Leipzig (Germany)
152mm (225x) Already comparatively easy at 180x. The faint companion can be seen well as a quite distinct, slightly elongated, partly round brightening. At 225x and above it becomes easy and immediately apparent, even if the diffraction rings of the primary component are not permanently visible due to the seeing. The primary component was shining in a bright orange.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Propus (means "forefoot") = Eta Geminorum: So cool! Bright orange star with B very close, ~1.5", just preceding, ~3 delta mag. B is in diffraction but is well separated & has its own airy disk, bluish white.
STF872 AB 6m9 7m4 11.3'' 215° 2017 Aur 06h15m39.06s +36°08'55.30"
Robert Zebahl
Leipzig (Germany)
55mm (25x) Well separated with significant difference in brightness.
H5 55 7m0 10m8 62.1'' 59° 2015 Gem 06h19m22.52s +23°16'28.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 12 Geminorum: Very wide separation, ~3 delta mag, fairly faint.
STF889 AB 7m6 9m9 21.3'' 244° 2015 Gem 06h19m51.77s +25°00'49.10"
Rene Merting
Drachhausen (Germany)
18x70 mit etwas Konzentration sind beide Sterne getrennt zu erkennen - A und B sind halb so weit voneinander entfernt wie das nahe liegende Pärchen STTA74 - Komponente B im SW ist genauso schwach wie B bei STTA74, aber dadurch, dass er näher zum Hauptstern steht, ist er schwächer sichtbar
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x unscheinbarer als der 14' nordöstlich liegende STTA74 - die Komponenten von STF889 wirken beide schwächer als die von STTA74 - Komponente B im SW ist gerade so erkennbar, Helligkeitsunterschied mindestens 2 Größenklassen, B ist gut abgesetzt von A - Farbkontrast gelblich, B farblos
STTA75 7m7 8m9 47.1'' 129° 2015 Ori 06h20m34.48s +18°02'56.70"
Rene Merting
Drachhausen (Germany)
18x70 ein mit ordentlichem Abstand getrenntes Sternpaar - B im SO ist halb so hell wie A
STTA74 AB 7m1 8m9 57.4'' 265° 2015 Gem 06h20m36.35s +25°11'20.40"
Rene Merting
Drachhausen (Germany)
18x70 westlich von Komponente A blinkt in ziemlich weitem Abstand die viel schwächere Komponente B hervor - A ist reinweiß, B wirkt grau
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x weit getrennt - Komponente B im SW ist 1,5 Magnituden schwächer und wirkt farblos gegen die weiß strahlende Komponente A
S513 AB 7m3 8m9 59.4'' 258° 2014 Gem 06h21m14.48s +21°07'56.70"
Rene Merting
Drachhausen (Germany)
18x70 weit getrenntes Pärchen - Komponente B im Westen ist gut 1,5 Größenklassen schwächer und wirkt dadurch bräunlich ggü. der weiß schimmernden Komponente A
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x popeleinfach, weit getrennt - Komponente B im Westen ist gut 1,5 Magnituden schwächer - zurück auf 20x nach wie vor sehr einfach, ein unauffälliger Doppelstern
STF3116, FR CMa AB 5m5 9m7 3.9'' 23° 2003 Mon 06h21m24.71s -11°46'23.60"
Uwe Pilz
Leipzig (Germany)
105mm (130x) schwach, knapp außerhalb des ersten Rings, kein Problem
Uwe Pilz
Leipzig (Germany)
105mm (137x) einfach
Uwe Pilz
Leipzig (Germany)
105mm (198x) oberhalb ß Cma
STF881, 4 Lyn AB 6m1 7m7 0.6'' 149° 2016 Lyn 06h22m03.57s +59°22'19.50"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) schwierig wegen Helligkeitsunterschied
STF899 7m4 8m0 2.2'' 18° 2018 Gem 06h22m49.64s +17°34'27.30"
Robert Zebahl
Leipzig (Germany)
70mm (133x) Separated, but tight with visible difference in brightness.
STF900, epsilon Mon, 8 Mon AB 4m4 6m6 12.0'' 29° 2017 Mon 06h23m46.10s +04°35'34.20"
Robert Zebahl
Leipzig (Germany)
55mm (42x) Relatively large distance and clear difference in brightness. The lighter component seemed white-yellowish, the weaker one slightly greenish-blue. The color contrast, however, was not particularly conspicuous.
Uwe Pilz
Leipzig (Germany)
105mm (288x) Blau-rot ../projects/doublestars/uwe_pilz/sketches/epsMon.jpg
STF914 6m3 9m2 21.0'' 298° 2017 Mon 06h26m44.85s -07°30'43.00"
Rene Merting
Drachhausen (Germany)
18x70 ein ordentlich getrenntes Pärchen, wobei die Komponente B westnordwestlich von A nur knapp sichtbar ist - Helligkeitsunterschied mindestens 3, wenn nicht sogar 4 Größenklassen
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x kommen beide Sterne wie großer und kleiner Bruder daher - Komponente B im steht NW in guter Entfernung zu A - Komponente A ist strahlend weiß, B wirkt aufgrund des Helligkeitsunterschiedes farblos - zurück auf 20x ist B auch noch knapp zu erkennen und immernoch ordentlich getrennt von A
SHJ70 AB 6m7 8m2 25.0'' 202° 2017 Gem 06h27m46.58s +20°47'22.60"
Rene Merting
Drachhausen (Germany)
18x70 ein schönes enges Sternpaar, Komponente B ist SW ist ordentlich getrennt von A zu erkennen - etwas über eine Größenklasse Helligkeitsunterschied, dadurch leichter Farbkontrast
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very pretty orange A, with a brown B, ~1.5 delta mag.
★★★ beta Mon, 11 Mon STF919 AB 4m6 5m0 7.1'' 133° 2017 Mon 06h28m49.07s -07°01'59.00"
STF919 AC 4m6 5m4 9.8'' 125° 2018
STF919 BC 5m0 5m3 2.6'' 108° 2018
BU570 AD 4m6 12m1 26.6'' 55° 2012
Rene Merting
Drachhausen (Germany)
18x70 STF919 (AB): das Mehrfachsystem ist als 8 erkennbar, eine extrem knappe Berührung, wobei die Komponenten B und C im SO nur als ein Stern gesehen werden können - BC ist gleich hell wie A allein
Rene Merting
Drachhausen (Germany)
100mm (32x) STF919 (AB): bei 32x ein wunderschöner eng stehender Doppelstern - die bei dieser Vergrößerung noch nicht trennbare Komponenten B C im SO wirken leicht gelblich und ist leicht heller als A - die Komponenten A und BC wollen sich berühren, schaffen es aber nicht ;-)
Rene Merting
Drachhausen (Germany)
100mm (107x) STF919 (BC): bei 64x wirkt BC leicht länglich wie ein Stäbchen - bei 107x dann der Aha-Effekt, es sind zwei Sterne, knapp getrennt und mit gleichem Positionswinkel wie A-BC - beide Komponenten B und C sind gleich hell und einzeln jeweils etwa eine halbe Größenklasse schwächer als A im NW
Uwe Pilz
Leipzig (Germany)
105mm (137x) Dreifachsystem, drei fast gleichhelle Sterne. Alle blau-weiß ../projects/doublestars/uwe_pilz/sketches/betaMon.jpg
STT143 AB 6m2 10m1 7.6'' 103° 2009 Gem 06h31m09.99s +16°56'19.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange A, very faint B, ~3", PA due east. 3rd to the north is FOX 147
FOX147 AC 6m2 11m4 47.3'' 346° 2015 Gem 06h31m09.99s +16°56'19.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 3rd star in STT 143, to the north, faint and widely separated
FAB5 Aa-Ab 7m2 9m6 0.9'' 18° 1991 Mon 06h31m40.54s +05°46'08.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Misshapen disk at best moments, very difficult
STF926 AB 7m2 8m6 10.8'' 287° 2017 Mon 06h31m40.54s +05°46'08.80"
Mark McCarthy
Fremont (California/USA)
317mm (170x) In a triangle of stars which points toward the Rosette Nebula. Blue-white A star and slightly red B, 1 delta mag, wide. The A star is FAB 5
★★ STF924, 20 Gem AB 6m3 6m9 20.7'' 212° 2017 Gem 06h32m18.52s +17°47'03.40"
BC 6m9 13m0 47.8'' 144° 2014
Rene Merting
Drachhausen (Germany)
18x70 AB: das dicht stehende Paar fällt sofort ins Auge - Komponente A im Norden ist vielleicht eine halbe Magnitude heller als Komponente B, die leicht gräulich strahlt
Robert Zebahl
Leipzig (Germany)
70mm (22x) AB: At 22x bright, immediately conspicuous, although in a relatively star-rich surrounding. Moderate but beautiful color contrast: bright orange, decent blue. Also at 44x very beautiful sight.
Robert Zebahl
Leipzig (Germany)
152mm (69x) AB: Easy, bright, moderately uneven. Nice contrast in color: slight orange, white-blueish.
STF918 AB 7m3 8m2 4.9'' 336° 2017 Aur 06h33m57.62s +52°27'41.80"
Robert Zebahl
Leipzig (Germany)
55mm (40x) At 40x tight, at 55x well split with obviously fainter companion.
S524 AB 7m2 7m4 53.0'' 244° 2017 Gem 06h34m07.10s +22°07'27.20"
Rene Merting
Drachhausen (Germany)
18x70 popeleinfach mit dem FG - ein mehr als gut getrenntes Pärchen zweier gleich heller Sterne - die östliche Komponente wirkt ein klein wenig heller - A warmweiß, B blauweiß
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x zeigen sich zwei annähernd gleichhelle Sterne weit getrennt voneinander - Komponente B im SW wirkt kühler als A
S524 AC 7m2 9m9 102.3'' 148° 2015 Gem 06h34m07.10s +22°07'27.20"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x ist südöstlich von A in doppeltem Abstand wie AB eine weitere Komponente erkennbar - C ist mindestens 2 Größenklassen schwächer als B - alle drei Sterne bilden ein schönes rechtwinkliges Dreieck, wobei die Ecke von A den rechten Winkel bildet - zurück auf 20x ist C auch noch knapp sichtbar
★★ STT147 AB 6m8 8m7 42.7'' 74° 2016 Aur 06h34m19.37s +38°04'33.60"
A-CD 6m8 9m8 44.5'' 119° 2016
CD 10m6 11m0 0.5'' 109° 1957
Uwe Pilz
Leipzig (Germany)
105mm (200x) ../projects/doublestars/uwe_pilz/sketches/200123stt147.jpg
Robert Zebahl
Leipzig (Germany)
152mm (69x) At 22x, the components A, B and CD are immediately conspicuous, where A dominates. They form a beautiful, acute-angled triangle. At 69x, color differences are also visible. A: subtle orange; B: grey-blueish; CD: tendency to orange. Rewarding, because the double stars STF 928 & STF 929 as well as the very conspicuous carbon star UU Aur are in close proximity and can partly be observed together in one field of view!
STF932 8m3 8m5 1.6'' 305° 2017 Gem 06h34m21.57s +14°45'08.30"
Robert Zebahl
Leipzig (Germany)
70mm (150x) Unfortunately a nearby lamp bothered me. I could see the double star at least elongated.
★★ STF928 AB 7m9 8m6 3.5'' 132° 2016 Aur 06h34m41.81s +38°32'24.50"
AC 7m9 12m4 130.9'' 124° 2002
BC 8m6 12m4 127.3'' 124° 2015
Robert Zebahl
Leipzig (Germany)
102mm (62x) AB: At 28x the double star already appeared elongated, at 62x beautifully separated, with component A shining in a warm, decent orange. At 125x A appeared orange, B grey-blueish.
Uwe Pilz
Leipzig (Germany)
105mm (200x) AB: kühl-weiß und lila ../projects/doublestars/uwe_pilz/sketches/200123stf928.jpg
Robert Zebahl
Leipzig (Germany)
152mm (69x) AB: Clearly separated, but tight. Moderate difference in brightness. Nice view with the nearby double stars STT147 & STF 929 and the carbon star UU Aur!
STF938, 14 Mon 6m5 10m6 11.0'' 211° 2012 Mon 06h34m46.33s +07°34'21.00"
Mark McCarthy
Fremont (California/USA)
317mm (170x) Bright A and very faint 4 delta mag B
STF929 7m3 8m4 6.5'' 24° 2016 Aur 06h35m22.03s +37°42'55.10"
Robert Zebahl
Leipzig (Germany)
152mm (69x) Easy to separate, clear difference in brightness, slight color contrast. Primary component showed a slight orange color, the color of the companion was not clearly defineable. Nice view with the nearby double stars STT147 & STF 928 and the carbon star UU Aur!
S529 AB 6m9 9m3 53.0'' 131° 2015 Gem 06h37m33.90s +12°10'50.00"
Rene Merting
Drachhausen (Germany)
18x70 ein weit getrenntes Sternpaar - Komponente B im SO ist kupferbraun, die gut 2 bis 2,5 Größenklassen hellere Komponente A strahlt weiß
STF942 10m1 10m1 3.5'' 246° 2015 Gem 06h37m40.87s +23°38'54.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint near equal brightness, well split
STF941 AB 7m2 8m2 2.0'' 88° 2017 Aur 06h38m40.76s +41°34'53.40"
AC 7m2 10m5 83.9'' 135° 2015
Robert Zebahl
Leipzig (Germany)
102mm (28x) AC: Distant, faint companion that is less attracting attention. Used magnifications between 28x and 125x.
Robert Zebahl
Leipzig (Germany)
102mm (86x) AB: At 62x only visible as figure '8'. The difference in brightness is hardly noticeable. At 86x barely separated, obvious. Clearly separated at 125x, but still tight with a moderate brightness difference.
STT152, 54 Aur 6m2 7m8 0.8'' 34° 2016 Aur 06h39m33.12s +28°15'47.40"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) schwierig, Luftunruhe ../projects/doublestars/frederik_wanink/sketches/STT152.jpg
STF950, S Mon AB 4m7 7m8 3.0'' 214° 2015 Mon 06h40m58.66s +09°53'44.70"
Mark McCarthy
Fremont (California/USA)
317mm (170x) This is the brightest star, forming the trunk, of the Christmas Tree cluster, NGC 2264. Bright white and wide 4 delta mag B star, well separated. Spent some time at 71x to look at the cluster as a whole.
STF956 AC 8m0 8m9 36.3'' 158° 2015 Mon 06h42m40.55s +01°42'58.20"
Rene Merting
Drachhausen (Germany)
18x70 leicht - Komponente C zeigt sich gut getrennt im Südwesten von A und ist mehr als eine Größenklasse schwächer
STF946 7m3 9m1 3.8'' 130° 2016 Lyn 06h44m51.62s +59°26'57.40"
Robert Zebahl
Leipzig (Germany)
152mm (100x) At 100x and 129x easy to separate, quite uneven. Primary component appeared yellowish, the fainter one rather greyish. Fantastic view together with 12 Lyn (STF 948) in one field of view!
AGC1, 9 CMa, alpha CMa, Sirius AB -1m5 8m4 10.7'' 75° 2016 CMa 06h45m08.92s -16°42'58.00"
Uwe Pilz
Leipzig (Germany)
105mm (198x) mit ADV, ohne nicht trennbar. Eindeutig
Mark McCarthy
Fremont (California/USA)
203mm (368x) Small disk formed on diffraction spike at correct separation and PA (Feb. 2016)
Mark McCarthy
Fremont (California/USA)
317mm (443x) A faint yellow-orange disk, to the edge of Sirius A’s diffraction and just below my spider’s diffraction spike. I let Sirius pass beyond the field stop, and for an instant there was Sirius B, clearly separated, before it too passed beyond the field stop.
STF957 AB 7m5 9m4 3.6'' 91° 2009 Gem 06h45m10.02s +30°49'33.50"
AC 7m5 13m8 19.3'' 100° 2015
Robert Zebahl
Leipzig (Germany)
70mm (100x) AB: Too faint for a separation. Primary component visible, companion not. Used magnifications from 67x to 133x. Observation from city at moon (83%).
Robert Zebahl
Leipzig (Germany)
152mm (129x) AB: Easy with significant difference in brightness and moderate angular distance.
STT155 7m1 10m9 15.1'' 261° 2015 Gem 06h45m23.51s +24°40'20.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty orange star with 2x fainter B, also orange, due west, ~6"
★★★ STF948, 12 Lyn AB 5m4 6m0 1.9'' 66° 2018 Lyn 06h46m14.15s +59°26'30.10"
AC 5m4 7m0 8.8'' 310° 2018
Robert Zebahl
Leipzig (Germany)
55mm (27x) AC: Components A/B and C well separated, but tight. Significant difference in brightness. The fainter C companion appeared slightly orange, the brighter one white-bluish.
Robert Zebahl
Leipzig (Germany)
55mm (167x) AB: Components A and B separated, whereby the Airy disks slightly overlap. The difference in brightness was well visible. ../projects/doublestars/robert_zebahl/sketches/2019-01-21_stf948.jpg
Robert Zebahl
Leipzig (Germany)
63mm (140x) AB: Components A and B split with almost no space in between. The difference in brightness was visible. ../projects/doublestars/robert_zebahl/sketches/2019-01-22_stf948.jpg
Robert Zebahl
Leipzig (Germany)
70mm (22x) AC: Well split, relatively close together with significant difference in brightness.
Robert Zebahl
Leipzig (Germany)
70mm (133x) AB: Both components A + B clearly split, whereby the diffraction rings where merged together. A very nice view together with component C. I sketched this triplet, which reflects my impression well. Unfortunately, the distance and position angle are not particularly well observed. Also the difference in brightness I didn't noticed during my observation. ../projects/doublestars/robert_zebahl/sketches/2019-01-20_stf948.jpg
Robert Zebahl
Leipzig (Germany)
152mm (129x) At 49x the pair AC is beautifully separated with a significant difference in brightness. At 100x, the close pair AB is also separated, although still very close together. A slight difference in brightness is noticeable. At 129x, the view is magnificent. The two bright components A & B present themselves yellowish, the fainter component C rather greyish. STF 948 can be well observed in a field of view with the neighbouring double star STF 946. Both show a nice overall scenery.
HWE15 8m9 10m3 13.2'' 218° 2015 CMa 06h46m35.21s -20°34'45.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange, a wide faint blue B star
STT157 7m2 9m2 0.6'' 163° 2016 Mon 06h47m47.56s +00°20'24.50"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Yellow A, widely separated from blue B. 2 magnitude difference. Did not notice 0.8" separation in A
STF958 AB 6m3 6m3 4.5'' 77° 2018 Lyn 06h48m12.29s +55°42'15.10"
Robert Zebahl
Leipzig (Germany)
70mm (33x) Clearly split, equally bright, close together. Nice view.
STF972 A-BC 8m3 9m3 12.5'' 154° 2016 CMa 06h48m22.15s -15°19'47.30"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x ein schwaches, unscheinbares, etwas mehr als knapp getrenntes Sternpaar - B im SO ist nur unwesentlich schwächer (lt. Stelle Doppie aber doch 0.99 mag)
A58 AB 7m4 8m7 5.0'' 161° 2015 Mon 06h48m35.78s -04°04'32.60"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x ein knapp getrenntes Pärchen - Komponente B im Süden ist eine Größenklasse schwächer und wirkt grau
HJ740 AB 8m2 9m1 21.2'' 2015 Mon 06h51m46.17s +00°27'35.90"
Rene Merting
Drachhausen (Germany)
18x70 Komponente B ist nördlich von A knapp getrennt erkennbar - Helligkeitsunterschied vielleicht eine Größenklasse
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x ein ordentlich getrenntes Sternpaar - Komponente B wirkt halb so hell wie A
STF974, 59 Aur AB 6m1 10m2 22.2'' 224° 2015 Aur 06h53m01.41s +38°52'08.90"
BC 10m2 12m8 25.6'' 219° 2015
Robert Zebahl
Leipzig (Germany)
102mm (28x) AB: Easy, moderate distance, pretty uneven. A appeared white-yellowish, B only as a tiny star.
STF985 7m8 8m4 32.6'' 323° 2017 Mon 06h53m56.06s -04°23'32.80"
Rene Merting
Drachhausen (Germany)
18x70 leicht (bequem getrennt) und schön mit Farbkontrast - Komponente A im Südwesten ist leicht gelblich, B wirkt dagegen grau - ein paar schwächere Sterne im Umfeld sorgen dafür, dass der Doppelstern noch etwas mehr hervor gehoben erscheint
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x ein weite Trennung - ein schöner Farbkontrast, Komponente A südöstlich ist weißgelb, B im NW dagegen ist zartorange - zurück auf 20x ordentliche Trennung
STF982, 38 Gem AB 4m8 7m8 7.4'' 143° 2018 Gem 06h54m38.63s +13°10'40.10"
Robert Zebahl
Leipzig (Germany)
55mm (27x) At 27x pretty tight with much fainter component. At 71x clearly separated with clear difference in brightness. Brighter component appeared slightly yellowish, the weaker one slightly bluish.
Robert Zebahl
Leipzig (Germany)
70mm (33x) Easy to separated with noticeable difference in brightness. The fainter component appeared slightly orange, the brighter one rather white.
Uwe Pilz
Leipzig (Germany)
105mm (130x) recht attraktiv
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty yellow and orange, 2 delta mag, wide separation
Mark McCarthy
Fremont (California/USA)
371mm (553x) Bright orange and slightly red star, 2-3 delta mag.
H5 65, 17 CMa AB 5m8 8m7 42.9'' 147° 2015 CMa 06h55m02.74s -20°24'17.50"
Rene Merting
Drachhausen (Germany)
18x70 ein mehr als ordentlich getrenntes Pärchen - Komponente B im SO ist gut 2,5 Größenklassen schwächer, aber noch gut erkennbar - schöner Farbkontrast
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x getrenntes Paar, Komponente B im Süden deutlich schwächer
H5 65, 17 CMa AC 5m8 9m2 48.5'' 187° 2015 CMa 06h55m02.74s -20°24'17.50"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 107x wird westlich von Komponente B ein noch schwächerer Stern sichtbar, Komponente C - dieser Stern steht minimal weiter weg von A als B
STF981 8m7 9m0 0.9'' 119° 2016 Gem 06h55m28.54s +30°09'42.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very close orange pair, equal magnitude. Clean split, ~1".
HN 123, pi CMa 4m7 9m6 11.6'' 13° 2003 CMa 06h55m37.40s -20°08'11.70"
Rene Merting
Drachhausen (Germany)
100mm (107x) bis 107x vergrößert, aber mehr als eine kleine kaum wahrnehmbare Ausbeulung nach Norden war nicht drin - höher Vergrößern wegen schlechtem Seeing nicht ratsam in der Nacht - kurios, der Stern strahlte zweifarbig, bläulich im Norden und ein helloranger Rand im Süden - ob das ein Dispersionseffekt war oder hervorgerufen aufgrund der beiden eng stehenden Sterne, vermag ich nicht zu sagen
STF991 AB 8m0 9m2 3.8'' 164° 2015 Gem 06h57m01.26s +24°57'27.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White and orange, 2 delta mag, ~5", PA to S.
STT159, 15 Lyn AB 4m5 5m5 0.7'' 236° 2017 Lyn 06h57m16.60s +58°25'23.00"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) relativ einfach ../projects/doublestars/frederik_wanink/sketches/15Lyn.jpg
STTA80 AB 7m2 7m4 124.1'' 53° 2015 Gem 06h58m06.59s +14°13'43.40"
AC 7m2 8m4 81.2'' 112° 2015
Robert Zebahl
Leipzig (Germany)
70mm (22x) All 3 components form a striking triangle and are slightly different in color. A (western component): white-blueish; B (northern component): white-yellowish; C (southern component): orange, partly slightly reddish. ../projects/doublestars/robert_zebahl/sketches/2019-12-18_stta80.jpg
STF1004 8m1 9m7 20.5'' 89° 2015 Mon 06h58m27.93s -11°25'51.40"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x ein schickes Pärchen, komfortabel getrennt - Komponente B im Osten ist deutlich schwächer, mindestens 1,5 Größenklassen - Farbkontrast, weil B so schwach ist - zurück auf 20x gelingt die Trennung weiterhin
CPO7, eps CMa 1m5 7m5 7.9'' 162° 2008 CMa 06h58m37.55s -28°58'19.50"
Mark McCarthy
Fremont (California/USA)
203mm (113x) Adhara, epsilon Canis Majoris: Wow! Bright (+1.5 magnitude) and large A with small and much fainter close B (magnitude +7.5) to the south. Lovely double
STF1000 AB-C 8m1 9m0 22.1'' 67° 2016 Gem 06h59m21.15s +25°14'00.20"
Rene Merting
Drachhausen (Germany)
100mm bei 32x ein bequem getrenntes Pärchen - Komponente AB kühlweiß - Komponente C im Osten ist eine dreiviertel Größenklasse schwächer und grauweiß
STF994 AB 7m9 8m1 26.4'' 55° 2017 Aur 06h59m27.19s +37°05'53.50"
Robert Zebahl
Leipzig (Germany)
55mm (25x) Well separated, large distance, slight difference in brightness.
STF1007 AB 7m4 11m4 14.6'' 300° 2015 Gem 07h00m37.12s +12°43'24.20"
AC 7m4 10m0 21.9'' 244° 2015
AD 7m4 7m7 67.7'' 28° 2016
Robert Zebahl
Leipzig (Germany)
70mm (22x) AD: Wide separation, small difference in brightness. Slight difference in color, but difficult to describe. Component A at least seemed rather white. South of STF1007 there is also the double star HJ3288 and the star HD52976, which appears in a bright orange. Together in one field of view a beautiful sight. ../projects/doublestars/robert_zebahl/sketches/2019-12-18_stf1007_hj3288.jpg
★★ BU100 7m3 11m1 3.2'' 261° 1978 Gem 07h00m56.55s +12°24'00.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty orange and blue. 4 delta mag, PA to west. Wide separation ~3" B is just seen, a very fine point.
STT163 AB 7m2 8m2 0.2'' 99° 1997 Mon 07h01m09.85s +11°46'28.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Not perfectly round AB, a faint bluish haze in the diffraction to the south. Marginal.
STF1010 AC 7m7 8m8 22.3'' 2017 Mon 07h01m27.05s -03°07'03.30"
Rene Merting
Drachhausen (Germany)
18x70 ein schönes enges Pärchen - Komponente B zeigt sich nicht zu knapp getrennt nördlich von A - Helligkeitsunterschied eine Größenklasse - zwei sehr schwache Sterne flankieren nahezu symmetrisch im SO und SW das Paar - netter Anblick
BU573 7m2 7m8 0.9'' 308° 2016 Mon 07h01m49.89s -10°52'56.30"
Uwe Pilz
Leipzig (Germany)
105mm (247x) schwach gekerbt ../projects/doublestars/uwe_pilz/sketches/bu573.jpg
HJ3288 7m3 8m7 38.5'' 247° 2015 Gem 07h02m18.43s +12°34'54.20"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Easy to separate with moderate angular distance and a significant difference in brightness. Slight difference in color: white-yellowish, slightly orange. Nice view together with the double star STF1007 and HD52976, which appears in a bright orange. Sketched together with STF1007.
HO342 8m0 8m7 1.2'' 89° 2016 Gem 07h02m50.54s +13°05'21.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow-orange and blue stars, PA to the east, 1 delta mag, tight but well split ~1".
Mark McCarthy
Fremont (California/USA)
371mm (553x) Split when seeing stills. orange A and yellowing B, 1.5-2”
A1575 8m6 9m3 0.8'' 284° 2012 Lyn 07h03m01.14s +54°02'55.40"
Robert Zebahl
Leipzig (Germany)
152mm (225x) 2020-03-23: At 225x and 300x clearly elongated, partly seen as figure '8'.
★★ STF1001 AB 7m8 9m4 9.1'' 67° 2017 Lyn 07h03m05.51s +54°10'26.60"
AC 7m8 9m3 9.9'' 59° 2017
BC 9m4 9m3 1.6'' 2017
Robert Zebahl
Leipzig (Germany)
152mm (129x) 2020-03-23: At 22x, the wide pair A-BC already appears separated, but still very tight. At 69x, A appears in a decent orange. The pair BC shows elongated and rather greenish-bluish. At 100x BC is already visible as figure '8' and almost separated, at 129x clearly separated. Components B and C are still very close together and equally bright. The color impression remains. An interesting and rewarding triple system! ../projects/doublestars/robert_zebahl/sketches/2020-03-23_stf1001.jpg
STF1009 AB 6m9 7m0 4.4'' 149° 2018 Lyn 07h05m39.83s +52°45'31.30"
Robert Zebahl
Leipzig (Germany)
70mm (33x) Very nice view. Equally bright components, tight.
★★ STF1014 9m9 9m9 2.0'' 221° 2017 Gem 07h05m44.95s +26°08'25.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very faint near equal brightness pair, ~3", PS to the SW.
ENG28 AB 7m9 7m7 171.9'' 99° 2015 Gem 07h08m00.24s +15°31'42.90"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Pretty, wide equal finder split, white, nice field.
STTA83/HO519 HO519 AB 7m2 13m0 32.5'' 73° 2015 Gem 07h09m35.47s +25°43'44.70"
STTA83 AC 7m2 7m8 123.3'' 79° 2015
Robert Zebahl
Leipzig (Germany)
70mm (22x) STTA83 (AC): Wide pair, relatively bright, moderate difference in brightness. A: slightly orange; C: grey-blue. Southeast of the pair in a much larger distance there is another, fainter star, which appears orange, partly reddish. It does not belong to the system. All three stars form a beautiful right-angled triangle.
HJ3934 A-BC 6m9 8m5 13.6'' 238° 2017 CMa 07h11m20.93s -21°48'11.80"
Uwe Pilz
Leipzig (Germany)
105mm (180x) schwach
WEI14 7m8 8m9 2.1'' 160° 2012 Gem 07h12m48.16s +15°10'41.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) A yellow-orange, blue B, 1 delta mag, PA to south. Nice!
STF1037 AB 7m2 7m3 0.8'' 304° 2018 Gem 07h12m49.08s +27°13'30.20"
Uwe Pilz
Leipzig (Germany)
105mm (260x) eingekerbt ../projects/doublestars/uwe_pilz/sketches/stf1037.jpg
Frederik Wanink
Itterbeck (Germany)
254mm (640x) leichter, gleich hell ../projects/doublestars/frederik_wanink/sketches/STF1037.jpg
STT167 AB 7m4 10m9 5.1'' 163° 2017 Gem 07h13m30.95s +32°08'43.70"
Robert Zebahl
Leipzig (Germany)
70mm (133x) Too faint for a separation. Primary component visible, no sign of the companion. Observation from city at moon (83%).
Robert Zebahl
Leipzig (Germany)
152mm (270x) At a position angle of about 180° I sometimes had the feeling to see something of the faint companion, but not sure.
STF1056 8m0 8m9 3.9'' 299° 2017 Mon 07h15m34.34s -01°51'36.80"
Mark McCarthy
Fremont (California/USA)
317mm (170x) Wide reddish pair.
★★ HJ3945 AB 5m0 5m8 26.8'' 50° 2015 CMa 07h16m36.84s -23°18'56.10"
Rene Merting
Drachhausen (Germany)
8x30 Winter-Albireo - ein eng stehendes Pärchen, ganz knapp getrennt - Komponente A im SW knallig orange, bei B ist schwer eine Farbnuance erkennbar, eher weißlich und deutlich schwächer als A
Rene Merting
Drachhausen (Germany)
10x50 ein knapp getrenntes Paar (nicht besser als im 8x30) - Komponente A leicht gelblich, B ist kühler, weißlich
Rene Merting
Drachhausen (Germany)
18x70 ein gut getrenntes Pärchen - Komponente A im Südwesten ist apfelsinenorange, B wirkt anfangs eisblau, bei längerer Betrachtung weißgrau
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x leuchtet Komponente A goldgelb, B im NO wirkt weiß ohne den erwarteten Farbstich, auch nicht bei 107x und auch nicht, wenn ich die Sterne leicht unscharf stelle - trotzdem sehenswert - auch bei 20x zeigen sich beide Sterne ordentlich voneinander getrennt, A strahlt jetzt noch tiefgelber, fast orange
Uwe Pilz
Leipzig (Germany)
105mm (37x) soforrt auffallend, blau-orange ../projects/doublestars/uwe_pilz/sketches/hj3945.jpg
Robert Zebahl
Leipzig (Germany)
120mm (23x) Evident, easy to split at large angular distance. Brighter component appeared very orange, fainter one bluish.
STF1068 AB 9m3 9m8 4.2'' 349° 2017 Gem 07h19m49.31s +13°22'22.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pumpkin orange pair, near equal magnitude, PA to north. Well separated ~4". Nice.
STF1050 AB 8m1 8m8 19.3'' 21° 2017 Lyn 07h19m51.29s +54°55'18.40"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Rather faint, obviously split with visible difference in brightness. View similar to STF 1062.
STF1066, delta Gem, 55 Gem 3m5 8m2 5.5'' 230° 2016 Gem 07h20m07.39s +21°58'56.40"
Robert Zebahl
Leipzig (Germany)
55mm (71x) Large difference in brightness. The fainter component was well separated, but just a very tiny star.
Robert Zebahl
Leipzig (Germany)
102mm (160x) Easy to separate with relatively large distance. The companion appeared as a tiny, faint star.
Uwe Pilz
Leipzig (Germany)
105mm (288x) erster Ring in SSW heller, zweiter nur an dieser Stelle sichtbar
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wasat = Delta Geminorum: Pretty white-yellow and red-orange pair, PA to west, ~4".
STF1070 AB 8m7 9m3 1.7'' 324° 2015 Gem 07h21m21.87s +34°01'36.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty close, 1.5", white, 1 delta mag, PA to NW.
STF1065, 20 Lyn 7m5 7m7 14.9'' 256° 2017 Lyn 07h22m15.11s +50°08'55.70"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Nicely split, moderate distance, similarly bright.
STF1062, 19 Lyn AB 5m8 6m7 14.8'' 316° 2018 Lyn 07h22m52.06s +55°16'53.30"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Clearly separated, moderate distance, noticeable difference in brightness. The colors seemed different, but not exactly definable.
Robert Zebahl
Leipzig (Germany)
152mm (22x) Easy to separate, but still quite close together with visible difference in brightness. Colorwise unremarkable.
STF1081 AB 7m7 8m5 1.9'' 236° 2015 Gem 07h24m08.94s +21°27'28.00"
AC 7m7 9m9 107.0'' 63° 2015
Robert Zebahl
Leipzig (Germany)
102mm (28x) AC: Rather wide apart from component A with noticeable difference in brightness. Less conspicuous.
Robert Zebahl
Leipzig (Germany)
102mm (86x) AB: At 86x just separated, very close together with moderate difference in brightness. In relation to A, the components B & C are almost opposite each other. At 125x, A & B are easy to split.
STF1083 7m3 8m1 6.7'' 45° 2015 Gem 07h25m35.30s +20°29'42.60"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Unequal pair. At 22x very tight, at 44x well split. Fainter companion appeared slightly orange, brighter one white-bluish.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Equal wide, white.
Mark McCarthy
Fremont (California/USA)
317mm (553x) White, equal brightness, PA to NE.
HO346 AB 7m0 11m7 13.2'' 59° 2015 Gem 07h25m54.13s +18°08'51.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and much fainter blue B, ~10” 3 delta mag. Nice!
STF1090 AC 7m3 9m5 49.9'' 79° 2015 Gem 07h26m27.33s +18°31'00.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty finder split, equal white. Is a 2+1 with 2x fainter BC.
STF1090 BC 8m2 9m5 20.9'' 328° 2015 Gem 07h26m31.56s +18°30'52.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Is a 2+1 with AC, C is 2 delta mag than fainter B.
STF1094 7m6 8m5 2.7'' 100° 2014 Gem 07h27m25.99s +15°18'59.00"
Robert Zebahl
Leipzig (Germany)
70mm (57x) At 57x barely split with noticeable difference in brightness. At 100x well split, but still tight.
S548 AC 7m0 8m9 35.1'' 277° 2015 Gem 07h27m40.54s +22°08'29.30"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x ein weit getrenntes Paar - Komponente A strahlt schwach gelblich … eher dunkelgelb - Komponente C im Westen von A ist gut 1,5 Magnituden schwächer und dunkelgrau bis lachsorange - der Doppelstern steht isoliert, fällt aber nicht übermäßig auf - zurück auf 20x ist das Paar weiterhin gut getrennt erkennbar
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange with a 2x fainter white star, PA slightly SW. AB is 12th mag and not seen
STF1103 7m1 8m6 3.9'' 247° 2015 CMi 07h30m33.61s +05°15'16.80"
Uwe Pilz
Leipzig (Germany)
105mm (137x) einfach, unscheinbar
Mark McCarthy
Fremont (California/USA)
317mm (170x) Pretty blue-white and orange-red stars, close but split.
STF1108 6m6 8m2 11.7'' 179° 2017 Gem 07h32m50.63s +22°53'15.40"
Rene Merting
Drachhausen (Germany)
100mm bei 32x ein sehr ungleiches enges Paar, aber klar getrennt - Komponente B im Süden ist knapp zwei Größenklassen schwächer - Komponente A buttergelb - zurück auf 20x verschmilzt Komponente B förmlich mit A zu einer sehr ungleichen 8, in guten Momenten sind beide Sterne aber dennoch schon getrennt sichtbar
Uwe Pilz
Leipzig (Germany)
105mm (130x) einfach
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange stars, 2 delta mag, PA to south, ~8"
STF1116 7m8 8m5 1.8'' 97° 2015 Gem 07h34m32.02s +12°18'16.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty tight white, near equal magnitude, 2-3", PA to east. Nice pair.
★★★ STF1110, alpha Gem, 66 Gem, Castor AB 1m9 3m0 5.1'' 54° 2017 Gem 07h34m35.86s +31°53'17.80"
AC 1m9 9m8 69.8'' 163° 2017
AD 1m9 10m1 179.8'' 221° 2017
Robert Zebahl
Leipzig (Germany)
55mm (27x) AB: At 27x slight difference in brightness visible. Double star appeared as '8'. At 38x clearly split, but tight.
Robert Zebahl
Leipzig (Germany)
70mm (44x) AB: At 44x the double star appeared as an '8'. At 100x clearly split with noticeable difference in brightness. Both components appeared white.
Rene Merting
Drachhausen (Germany)
100mm (107x) AB: bei 32x wirkt der Stern leicht länglich - bei 107x stehen die beiden Sterne schön eng mit überlagernden Beugungsscheibchen, die Komponenten sind dennoch getrennt erkennbar - Komponente B im Osten ist eine halbe Magnitude schwächer - ganz schwacher Farbkontrast
Uwe Pilz
Leipzig (Germany)
105mm (144x) AB: blauweiß-weiß ../projects/doublestars/uwe_pilz/sketches/Castor.jpg
STT174 6m6 8m3 1.9'' 92° 2017 Lyn 07h35m56.00s +43°01'51.40"
Robert Zebahl
Leipzig (Germany)
70mm (133x) The obviously fainter component could be permanently seen in the right position angle as brightening on the first diffraction ring.
BGH3 AB 7m3 9m0 57.9'' 113° 2017 Mon 07h39m59.33s -03°35'51.00"
Rene Merting
Drachhausen (Germany)
18x70 beide Komponenten sind mit ordentlichem Abstand getrennt sichtbar - Komponente B im SO ist gut 1,5 Magnituden schwächer und wirkt gegen die strahlend weiße Komponente A eher graubraun
★★ STF1126 AB 6m5 7m0 0.9'' 176° 2017 CMi 07h40m06.99s +05°13'51.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wow, very close <1" hair-split, near equal brightness
STF1132 8m1 8m5 20.1'' 235° 2017 Mon 07h42m12.50s -03°31'10.40"
Rene Merting
Drachhausen (Germany)
18x70 ein dicht stehendes Pärchen - Komponente B im SW ist nur leicht schwächer - leichter Farbunterschied - STF1132 fällt eher als Doppelstern auf als der ebenfalls weiter westlich im Gesichtsfeld stehende Doppelstern Bgh
STT179, kappa Gem, 77 Gem 3m7 10m0 7.2'' 241° 2014 Gem 07h44m26.87s +24°23'53.30"
Robert Zebahl
Leipzig (Germany)
70mm (133x) Observation at nearly full moon: Fainter companion was not visible.
Rene Merting
Drachhausen (Germany)
100mm (213x) bei 213x mit viel Geduld ist blickweise Komponente B südwestlich von A im Beugungsscheibchen erkennbar - kaum wie ein Stern, einfach nur eine schwache Aufhellung
Robert Zebahl
Leipzig (Germany)
120mm (200x) Although the optics were not yet completely cooled down, the fainter component could be seen slightly outside the first diffraction ring as a tiny star in moments of steady air.
A674 8m2 9m8 1.1'' 125° 2008 Gem 07h44m38.11s +31°06'50.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very close and faint, just split
STF1107 8m7 10m1 1.2'' 213° 1991 Cam 07h45m14.87s +75°47'51.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide separation, 1 delta mag, PA to NW.
STF1141 AB 8m4 9m4 17.5'' 10° 2017 CMi 07h47m02.47s +00°01'06.10"
Rene Merting
Drachhausen (Germany)
18x70 ganz dicht nördlich über Komponente A ist B knapp getrennt als schwaches Murmelchen sichtbar, Helligkeitsunterschied schätzungsweise 1,5 Magnituden
Rene Merting
Drachhausen (Germany)
18x70 nordöstlich von A in vierfachem Abstand AB ist ein schwaches Lichtpünktchen (Komponente D) erkennbar
Rene Merting
Drachhausen (Germany)
18x70 Komponente E zeigt sich westlich von Komponente A in drei- bis vierfacher Entfernung wie AB, schwach
STF1140 7m0 8m7 6.4'' 273° 2015 Gem 07h48m22.61s +18°20'12.40"
Robert Zebahl
Leipzig (Germany)
70mm (44x) Easy to separate with quite clear difference in brightness.
STTA88 AB 7m5 8m9 57.1'' 2015 CMi 07h48m58.22s +00°39'42.90"
Rene Merting
Drachhausen (Germany)
18x70 ein einfacher Fernglas-Doppelstern - beide Komponenten sind gut sichtbar, weit getrennt voneinander - Komponente B im Norden ist gut 1,5 Magnituden schwächer - leichter Farbkontrast
STF1147 9m7 9m7 2.2'' 177° 2018 Gem 07h50m19.69s +24°31'55.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very fine 2", equal magnitude blue-white pair, PA to south, ~2".
STTA89 6m8 7m7 76.8'' 84° 2015 Gem 07h51m00.20s +31°36'48.70"
Robert Zebahl
Leipzig (Germany)
70mm (22x) At 22x widely separated with moderate difference in brightness. The primary component appeared whitish, at 44x rather white-yellowish. The companion appeared slightly orange.
STT182 7m8 7m9 0.9'' 2017 CMi 07h52m42.12s +03°23'02.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Moderately bright A with 4 much fainter wide and close stars, forms a right triangle.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very close, ~1", near equal brightness white.
STF1162 8m0 10m2 9.0'' 327° 2015 Cnc 07h57m22.66s +13°12'24.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and blue, pretty wide.
STF1167 9m8 11m8 12.2'' 229° 2015 Cnc 07h58m34.29s +16°28'09.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very faint pair, B seen with averted vision and seeing. 2 delta mag, near a bright star.
STF1170 8m7 9m1 2.4'' 108° 2017 Cnc 07h59m45.52s +13°41'19.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Close near equal pair, 2".
STF1171 6m5 9m9 2.0'' 326° 2015 Cnc 08h01m00.78s +23°34'59.20"
Rene Merting
Drachhausen (Germany)
100mm (213x) bei 142x schmiegt sich Komponente B an der Grenze zur Sichtbarkeit im Süden von Komponente A ganz dicht an den viel größeren Bruder, der ohne Beugungsringe auskommt - bei 213x zeigt sich B leicht abgesetzt von A
Robert Zebahl
Leipzig (Germany)
102mm (187x) Observation from the city at half moon. At magnifications between 187x and 280x I could see the very dim companion almost permanently near the first diffraction ring. But the diffraction ring itself was hardly visible. Main problem here was probably the low brightness of the companion.
Uwe Pilz
Leipzig (Germany)
105mm (200x) schwierig. Zu ahnen bei 144x ../projects/doublestars/uwe_pilz/sketches/200303stf1171.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow and orange, 4 delta mag! very faint and close B
STF1173 AB 8m5 9m9 10.4'' 51° 2015 Cnc 08h01m23.12s +16°56'58.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide, pretty faint
HO349 AB 7m7 12m0 10.3'' 227° 2015 Cnc 08h02m32.77s +12°27'08.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Light orange star and extremely faint B star, a fuzz at the edge of visibility in the correct position angle, ~10" separation
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide separation, 3 delta mag, faint B.
STT186 7m7 7m9 1.0'' 73° 2017 Cnc 08h03m18.52s +26°16'03.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Close, 1" but easy split, near equal dull white color.
BU581 AB 8m5 8m8 0.4'' 220° 2017 Cnc 08h04m23.10s +12°17'23.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Light orange near equal, very small, elongated to notched.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange A is not quite round. Marginal
STF1182 7m5 8m8 4.8'' 73° 2017 CMi 08h05m24.43s +05°49'38.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White and reddish, 1 delta mag, PA due east.
STF1181 8m3 9m3 5.2'' 142° 2017 Cnc 08h05m24.56s +08°11'58.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and blue, 3 delta mag, wide separation.
STF1177, 17 Cnc 6m7 7m4 3.5'' 349° 2017 Cnc 08h05m37.06s +27°31'46.90"
Robert Zebahl
Leipzig (Germany)
70mm (57x) Easy to separate, but still relatively close together. Well visible difference in brightness. Color of the components was not clearly visible. Nice view overall.
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 107x sehe ich ein knapp getrenntes schön eng stehendes Pärchen - Komponente B im Norden ist eine dreiviertel Größenklasse schwächer - das Weiß von A wirkt kühler - zurück auf 64x sehe ich eine Ameise mit dünnem Hals, in ruhigen Momenten zeigen sich beide Sterne sogar getrennt
Uwe Pilz
Leipzig (Germany)
105mm (144x) ../projects/doublestars/uwe_pilz/sketches/200303stf1177.jpg
Frederik Wanink
Itterbeck (Germany)
254mm (640x) getrennt ../projects/doublestars/frederik_wanink/sketches/STF1177.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellowish, 1 delta mag, ~4"
STF1186 7m1 10m1 3.4'' 219° 2007 Cnc 08h08m49.61s +27°28'49.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 11 Cnc: Orange with very faint B, ~3"
STF1188 8m7 9m3 16.5'' 201° 2017 Cnc 08h09m23.95s +30°20'49.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide separation, near equal white.
STF1187 AB 7m2 8m0 3.1'' 19° 2017 Cnc 08h09m30.45s +32°13'18.80"
Robert Zebahl
Leipzig (Germany)
70mm (57x) Split. Components very tight with noticeable difference in brightness.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow and orange, 1 delta mag, 5"
BUP111 AB 6m6 9m3 80.9'' 49° 2016 Cnc 08h10m13.10s +25°50'40.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 13 Cnc. Wide separation, orange A.
STF1191 10m3 10m8 3.6'' 77° 2015 Cnc 08h10m47.59s +19°01'51.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very faint but well split, ~3", near equal pair
HJ777 AB 9m6 11m7 10.6'' 349° 2016 Cnc 08h11m29.33s +10°41'05.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very wide, faint
★★★ STF1196, zeta Cnc, 16 Cnc AB-C 4m9 5m8 5.8'' 66° 2017 Cnc 08h12m12.79s +17°38'51.20"
AB 5m3 6m2 1.0'' 2017
Robert Zebahl
Leipzig (Germany)
102mm (86x) AB-C: Easy to separate. A: light grey, B: pale orange.
Stefan Loibl
Rosenheim (Germany)
102mm (164x) AB-C clearly split, AB obviously elongated but not split
Uwe Pilz
Leipzig (Germany)
105mm (288x) weißblau-gelb-gelb ../projects/doublestars/uwe_pilz/sketches/zetaCnc.jpg
Robert Zebahl
Leipzig (Germany)
120mm (67x) AB-C: Evident difference in brightness, easy to split. Both components of similar color.
Robert Zebahl
Leipzig (Germany)
120mm (200x) AB: Very tight. The Airy disks were still touching. Slight difference in brightness. Extremely beautiful triple star! ../projects/doublestars/robert_zebahl/sketches/2019-02-24_stf1196.jpg
Frederik Wanink
Itterbeck (Germany)
254mm (200x) AB-C: AB (1,1") nicht bemerkt ../projects/doublestars/frederik_wanink/sketches/STF1196.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) AB: 2+1 system, the +1 star is HUT 1. STF 1196AB make a nice tight pair. They are all nearly the same magnitude, white & brilliant
Mark McCarthy
Fremont (California/USA)
317mm (553x) AB: Triple, all near equal magnitude, yellow-white. AB ~0.8", hair split.
★★ STF1196, zet Cnc AC 5m3 5m8 6.2'' 62° 2018 Cnc 08h12m12.79s +17°38'51.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Triple, all near equal magnitude, yellow-white. AC ~6", wide split.
HUT1, zet Cnc Ca-Cb 6m2 7m1 0.3'' 96° 2016 Cnc 08h12m13.27s +17°38'51.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) not quite round, oval/olive shaped. It is the AB-C of STF 1196.
STF1197 9m0 9m7 1.8'' 100° 2017 Cnc 08h12m44.45s +29°32'30.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very faint pair, 1 delta mag, ~2".
STF1201 8m1 9m5 6.7'' 185° 2015 Cnc 08h12m52.51s +09°34'40.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty wide, 5", 1 delta mag.
STF1202 7m4 9m6 2.7'' 305° 2015 Cnc 08h13m34.20s +10°50'49.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice yellow-orange and 3 delta mag, B, same color, ~5-7"
H6 78 AC 6m4 10m9 63.3'' 300° 2015 Cnc 08h14m11.14s +17°40'33.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) very wide, bright white, 3 delta mag.
LEP30 7m7 9m8 31.8'' 238° 2015 Cnc 08h15m33.20s +11°25'51.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Light orange with faint white star of ~11th magnitude, wide separation
STF1210 AB 7m2 9m4 15.5'' 113° 2015 Hya 08h15m48.54s +02°48'05.00"
Rene Merting
Drachhausen (Germany)
18x70 mit etwas Konzentration ploppt südöstlich von A ein kleiner schwacher Lichtpunkt auf, der nicht richtig klar zu sehen ist - in ruhigen Momenten Trennung sichtbar - Komponente B ist mindestens 2 Größenklassen schwächer
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty wide greenish yellow pair, wide separation, 2 delta mag.
STF1223, phi 2 Cnc 6m2 6m2 5.2'' 219° 2018 Cnc 08h26m47.08s +26°56'07.80"
Uwe Pilz
Leipzig (Germany)
105mm (88x) sehr schön, blauweiß-gelbweiß ../projects/doublestars/uwe_pilz/sketches/stf1223.jpg
STF1230 9m3 10m6 34.2'' 186° 2015 Cnc 08h28m25.95s +16°51'09.10"
Uwe Pilz
Leipzig (Germany)
105mm (200x) Komponente B nur indirekt. bei 88x erahnbar. ../projects/doublestars/uwe_pilz/sketches/200323STF1230.jpg
★★ STF1245 AB 6m0 7m2 10.1'' 25° 2018 Cnc 08h35m51.05s +06°37'13.90"
Uwe Pilz
Leipzig (Germany)
105mm (88x) ../projects/doublestars/uwe_pilz/sketches/200323STF1245.jpg
STN61 8m4 9m4 4.6'' 203° 2015 Pyx 08h40m17.61s -32°09'54.90"
Mark McCarthy
Fremont (California/USA)
508mm (205x) Near planetary nebula M3-6. Pretty blue and orange pair, close but well split.
★★ STF1254 AB 6m4 10m4 20.8'' 55° 2017 Cnc 08h40m22.11s +19°40'11.90"
AC 6m5 7m6 64.0'' 343° 2017
AD 6m5 9m2 83.5'' 44° 2017
Stefan Loibl
Rosenheim (Germany)
102mm (164x) septuple, visual quintuple, components A, B, C, and D split, E not visible, B not split, no colour contrast, at northern edge of Messier 44 (Praesepe)
STF1258 7m7 7m9 10.0'' 330° 2017 UMa 08h43m25.41s +48°51'41.90"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Easy to separate at 22x, similarly bright components at moderate distance. At 57x very small difference in brightness noticeable. The components appeared slightly orange and white-blueish, with the color changing from one component to another. A very strange effect, which I observed several times.
CBL32 7m4 10m7 41.0'' 174° 2015 Cnc 08h46m14.32s +27°35'41.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Dull orange with fairly faint 10.5 mag B, wide separation
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty yellow-orange 8th magnitude primary, with 3x fainter blue which can be seen direct vision but blinks like a planetary nebula, so must be 11-12th mag. Wide separation.
★★ STF1268, iota Cnc, 48 Cnc 4m1 6m0 31.3'' 308° 2016 Cnc 08h46m41.82s +28°45'35.60"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Striking, widely separated with noticeable difference in brightness. Moderate but beautiful color contrast: white-yellowish and grey-blueish.
Robert Zebahl
Leipzig (Germany)
102mm (28x) Grand sight! Pretty wide apart and unequal. A: decent orange, B: very nice light blue.
Stefan Loibl
Rosenheim (Germany)
102mm (164x) wide pair with nice colour contrast yellow/blue
Uwe Pilz
Leipzig (Germany)
105mm (144x) gelb-blaugrau ../projects/doublestars/uwe_pilz/sketches/iotaCnc.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) 80mm finder split, beautiful yellow and blue. Scope view real nice. Very good diffraction and airy disks.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Iot Cnc: Pretty orange and pale blue, showpiece object.
★★★ STF1273, epsilon Hya AB-C 3m5 6m7 2.9'' 309° 2017 Hya 08h46m46.51s +06°25'07.70"
Uwe Pilz
Leipzig (Germany)
105mm (200x) bei 144x schwierig ../projects/doublestars/uwe_pilz/sketches/200323epsHya.jpg
BU335 7m5 9m4 2.6'' 265° 2017 Hya 08h48m12.24s +02°34'48.40"
Uwe Pilz
Leipzig (Germany)
105mm (200x) schwierig ../projects/doublestars/uwe_pilz/sketches/200323BU335.jpg
Mark McCarthy
Fremont (California/USA)
508mm (333x) Close, ~3", 2 delta mag.
STF1282 AB 7m6 7m8 3.5'' 280° 2018 Lyn 08h50m44.28s +35°04'15.40"
Robert Zebahl
Leipzig (Germany)
70mm (57x) Clearly separated, but close together with very little difference in brightness. The double star forms an acute-angled triangle together with two other stars.
STF1275 AB 8m7 8m9 1.9'' 198° 2015 UMa 08h51m26.19s +57°31'38.10"
Robert Zebahl
Leipzig (Germany)
70mm (100x) At 100x and 150x not permanently split. Components very close together.
HJ460, 53 Cnc AB 6m5 11m7 43.7'' 335° 2003 Cnc 08h52m28.60s +28°15'33.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 53 Cnc: Orange primary and 2x fainter blue, wide separation (this is AB). There is a second orange-yellow star of about the same magnitude very wide separation (this is AC).
STF1291, 57 Cnc AB 6m1 6m4 1.5'' 310° 2017 Cnc 08h54m14.65s +30°34'45.80"
AB-C 5m5 9m2 54.6'' 204° 2015
Robert Zebahl
Leipzig (Germany)
70mm (133x) AB: Immediately apparent as a double star. Diffraction disks overlapping slightly ('8'). Difference in brightness visible.
Uwe Pilz
Leipzig (Germany)
105mm (144x) gelb ../projects/doublestars/uwe_pilz/sketches/57Cnc.jpg
STF1289 8m2 8m9 3.6'' 2018 Lyn 08h54m44.33s +43°35'04.70"
Robert Zebahl
Leipzig (Germany)
70mm (57x) Quite faint double star, but easy to separate with a noticeable difference in brightness and close components.
ARG21, AC UMa 10m0 10m4 21.4'' 107° 2015 UMa 08h55m51.01s +64°58'21.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Two very faint stars, wide separation, ~0.5 delta mag, to south of an orange star.
★★ BU408 7m3 9m6 2.8'' 346° 2017 UMa 08h59m00.62s +63°25'42.80"
Rene Merting
Drachhausen (Germany)
100mm (142x) bei 107x ist nordöstlich von A ein Helligkeitspeak erkennbar, aber nicht richtig greifbar - bei 142x dann zeigt sich in ruhigen Momenten die schwächere Komponente knapp abgesetzt von A - großer Helligkeitsunterschied, mindestens 2,5 Größenklassen
Mark McCarthy
Fremont (California/USA)
317mm (553x) BU 408 is the fainter star in a pair pair of near equal stars in finder view, red-orange color. In the scope the B is a blue star 3" out from the orange star.
STF1298, 66 Cnc AB 6m0 8m6 4.4'' 137° 2017 Cnc 09h01m24.13s +32°15'08.30"
AC 6m0 12m0 187.6'' 318° 2015
Robert Zebahl
Leipzig (Germany)
70mm (80x) AB: At 67x and 80x the companion is visible as a very faint star close to the main component. At 133x it is only visible as a slightly blurred tiny star just outside the first diffraction ring of the primary component.
SHJ101, 67 Cnc 6m1 9m2 103.9'' 329° 2015 Cnc 09h01m48.84s +27°54'09.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 67 Cnc. White pair, 2 delta mag, wide.
STTA97 8m3 8m3 51.8'' 238° 2015 Cnc 09h08m27.16s +27°32'35.30"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Finder split, near equal white.
Mark McCarthy
Fremont (California/USA)
317mm (553x) 80mm finder view shows an arc of three stars. westernmost star is a wide equal pair in the telescope.
WRH16, xi Cnc 5m7 6m2 0.2'' 108° 1944 Cnc 09h09m21.53s +22°02'43.60"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) nicht als DS gesehen
★★ STF1306, sigma 2 UMa, 13 UMa AB 4m9 8m8 4.3'' 348° 2016 UMa 09h10m23.53s +67°08'03.30"
AC 4m9 10m3 197.8'' 148° 2003
Robert Zebahl
Leipzig (Germany)
70mm (100x) AB: Companion almost permanently visible as elongated, non-condensed brightening of the first diffraction ring of the primary component at the correct position angle.
Uwe Pilz
Leipzig (Germany)
105mm (144x) AB: sehr schwierig bei 88x ../projects/doublestars/uwe_pilz/sketches/200316stf1306.jpg
STF1315 7m3 7m7 24.9'' 27° 2017 UMa 09h12m45.94s +61°40'32.70"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Medium bright double star, easy to separate with attractive distance and slight difference in brightness. Together with 16 UMa in one field of view. The brighter component appeared slightly orange, the fainter one showed a hint of blue. However, the colors of the components changed over time. At 57x similar view.
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x gibt es nix zu meckern, ein bequem getrenntes Pärchen - Komponente B im NO ist maximal eine halbe Größenklasse schwächer - leichter Farbkontrast - noch schöner bei 20x, auffällig im Umfeld
STF1318 7m8 9m5 2.6'' 228° 2017 UMa 09h13m38.79s +46°59'25.30"
Robert Zebahl
Leipzig (Germany)
70mm (133x) Separated with clear difference in brightness. The faint companion is slightly outside the first diffraction ring of the primary component.
STF1336 7m0 11m1 39.7'' 181° 2015 Hya 09h17m32.92s +00°33'17.80"
Uwe Pilz
Leipzig (Germany)
105mm (144x) sehr weit, kein Doppelstern-Eindruck ../projects/doublestars/uwe_pilz/sketches/200323STF1336.jpg
STF1333 6m6 6m7 1.9'' 50° 2017 Lyn 09h18m25.97s +35°21'51.30"
Robert Zebahl
Leipzig (Germany)
63mm (120x) At 93x seen as '8', at 120x split, but pretty tight with no visible difference in brightness.
Uwe Pilz
Leipzig (Germany)
105mm (200x) fast gleich hell, beide gelblich, bei 66x schwierig ../projects/doublestars/uwe_pilz/sketches/stf1333.jpg
STF1334, 38 Lyn AB 3m9 6m1 2.5'' 229° 2017 Lyn 09h18m50.64s +36°48'09.30"
Uwe Pilz
Leipzig (Germany)
60mm (198x) Aufhellung im ersten Ring
Robert Zebahl
Leipzig (Germany)
63mm (140x) Fainter companion only seen as permanent brightening on the first diffraction ring. ../projects/doublestars/robert_zebahl/sketches/2019-01-22_stf1334.jpg
Uwe Pilz
Leipzig (Germany)
105mm (288x) gelb, trennbar bei 66x ../projects/doublestars/uwe_pilz/sketches/38Lyn.jpg
Mark McCarthy
Fremont (California/USA)
317mm (553x) 38 Lyn: Very bright A with 3x fainter dull white B, 3-4"
★★ STF1347 7m3 8m3 21.1'' 312° 2016 Hya 09h23m15.76s +03°30'05.00"
Uwe Pilz
Leipzig (Germany)
105mm (88x) sehr schöner Farbkontrast ../projects/doublestars/uwe_pilz/sketches/200323STF1347.jpg
STF1344 9m0 9m5 3.8'' 104° 2018 LMi 09h23m28.35s +39°08'05.10"
Robert Zebahl
Leipzig (Germany)
120mm (75x) At 50x and 75x split, but tight with little difference in brightness.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint near equal par, ~5". Nice.
★★ STF1348 AB 7m5 7m6 1.9'' 313° 2017 Hya 09h24m28.48s +06°21'01.80"
Uwe Pilz
Leipzig (Germany)
105mm (144x) Im selben Aufsuchfeld wie stf1355, ähnliche Erscheinung ../projects/doublestars/uwe_pilz/sketches/200323STF1348_55.jpg
BU105, kappa Leo, 1 Leo AB 4m6 9m7 2.0'' 209° 2015 Leo 09h24m39.28s +26°10'56.80"
AB 4m6 9m7 2.0'' 209° 2015
Uwe Pilz
Leipzig (Germany)
105mm (180x) Begleiter sitzt im ersten Ring
BU105, kap Leo AB 4m6 9m7 2.0'' 209° 2015 Leo 09h24m39.28s +26°10'56.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Kappa Leonis: Very tough but palpable split. Seeing needed to settle to perfection for primary to resolve to just an airy disk without diffraction or flaring, and for a couple of seconds could see the much fainter ~10th magnitude B star as a pin-point, ~2" separation. Fleeting view.
★★ STT200 6m5 8m6 1.2'' 337° 2007 UMa 09h24m55.67s +51°34'26.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Light orange A, B a deeper orange, maybe because it's 2-3x fainter. B resolves from within A's diffraction when seeing settles, ~1". Wow!
★★ STF1355 7m7 7m8 1.8'' 355° 2017 Hya 09h27m16.69s +06°13'59.00"
Uwe Pilz
Leipzig (Germany)
105mm (144x) Im selben Aufsuchfeld wie stf1348, ähnliche Erscheinung ../projects/doublestars/uwe_pilz/sketches/200323STF1348_55.jpg
STF1353 9m9 10m0 3.3'' 125° 2017 Leo 09h27m39.28s +15°44'32.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Well separated near equal 9th magnitude white stars, ~4"
STF1356, ome Leo 5m7 7m3 0.9'' 112° 2017 Leo 09h28m27.41s +09°03'24.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very close but clean split, in each other's diffraction, half delta mag, white.
H4 47, 3 Leo 5m8 11m1 24.8'' 80° 2014 Leo 09h28m29.19s +08°11'18.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange star with well separated white B, 2 delta mag.
41 Lyn, S598 AB 5m5 7m8 69.7'' 160° 2017 UMa 09h28m39.99s +45°36'06.50"
This star has the designation 41 Lyn but is assigned to UMa. At the time, when Flamsteed numbered the stars, the constellation boundaries were not exactly defined. Another example is 10 UMa, which is located in Lyn today.
Robert Zebahl
Leipzig (Germany)
8x40 Fairly well split with fainter component.
STF1360 AB 8m9 8m9 13.8'' 242° 2017 Leo 09h30m35.95s +10°36'06.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Unremarkable wide separation 8th mag stars.
STF1349 7m5 9m0 19.2'' 166° 2015 UMa 09h31m09.89s +67°32'28.40"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x stehen beide Sterne bequem getrennt auseinander - Komponente B im Süden ist eine knappe Größenklasse schwächer und kupfergrau - ein schönes Doppel-Doppel zusammen mit STF1350 gut 47' weiter südsüdöstlich
Uwe Pilz
Leipzig (Germany)
105mm (88x) sichtbar bei 21x ../projects/doublestars/uwe_pilz/sketches/200316stf1349.jpg
STF1351, 23 UMa AB 3m6 9m2 22.9'' 268° 2015 UMa 09h31m31.57s +63°03'42.50"
AC 3m7 11m8 105.2'' 232° 2003
Rene Merting
Drachhausen (Germany)
100mm (32x) AB: bei 32x ist A gleißend, B im Westen extrem schwacher Lichtpunkt, gut 4-5 Größenklassen schwächer - bei 64x kann ich A ein wenig gebändigt erkennen und hat einen leichten Stich ins Gelbliche, B ist ordentlich abgesetzt
Mark McCarthy
Fremont (California/USA)
317mm (270x) AB: 23 UMa. Lovely yellow-white and 3x fainter wide B, white.
SHJ107, 6 Leo 5m2 9m3 37.1'' 75° 2014 Leo 09h31m57.58s +09°42'56.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) A star is light orange & 3 delta mag to B star which is a white, well separated point
STF1364 AB 8m6 9m7 16.4'' 155° 2015 Leo 09h32m01.52s +20°02'49.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Unremarkable wide separation faint stars
HN 29 6m5 12m1 27.8'' 263° 2015 Leo 09h33m18.32s +28°22'04.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very wide, very faint B star. Not very exciting.
★★ STF1350 AB 8m3 8m3 10.2'' 249° 2015 UMa 09h34m19.56s +66°47'42.30"
AC 8m3 9m2 131.0'' 216° 2015
Rene Merting
Drachhausen (Germany)
100mm (32x) AB: bei 32x ein schönes enges Paar zweier gleich heller Sterne, knapp getrennt - STF1350 AB bildet mit vier ähnlich hellen Sternen westlich ein Muster, ähnlich einer Sense
Rene Merting
Drachhausen (Germany)
100mm (32x) AC: bei 32x bildet STF1350 AB mit vier ähnlich hellen Sternen westlich ein Muster, ähnlich einer Sense - der erste der vier Sterne bzw. der nächststehende Stern südsüdwestlich mit mehr als zehnfachem Abstand AB ist Komponente C, er ist schätzungsweise eine halbe Größenklasse schwächer
Uwe Pilz
Leipzig (Germany)
105mm (88x) AB: trennbar bei 21x. Fast gleichell, aber deutlicher Farbkontrast, lohnend. ../projects/doublestars/uwe_pilz/sketches/200316stf1350.jpg
Robert Zebahl
Leipzig (Germany)
152mm (100x) At 22x, all three components are already visible, with A & B still standing quite close together. Component C is less prominent. At 69x and 100x, the pair AB shows a nice color contrast: The eastern component mostly appeared in a slightly shiny orange, while the other component appeared more white-blueish. During the observation, however, the colors changed between both components. At the time of observation, the pretty bright comet C/2019 Y4 Atlas was also in the same field of view - a great scene! Note to the sketch: The positions of the stars to each other do not exactly match, also the alignment of the pair AB to C. ../projects/doublestars/robert_zebahl/sketches/2020-03-18_stf1350_c2019_y4_atlas.jpg
HU1128, 11 LMi 4m8 12m5 6.7'' 61° 2012 LMi 09h35m39.50s +35°48'36.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 11 LMi: Very faint A & extremely faint B, wide separation. From the orbital chart this is approaching maximum elongation now (May 2017), by 2143 it will be 1". Only 39 light years away.
H5 58, 7 Leo 6m3 9m4 41.0'' 90° 2014 Leo 09h35m52.88s +14°22'46.50"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Finder split, wide, white, 2 delta mag.
STT204 AB 6m7 10m7 8.2'' 99° 2015 Leo 09h38m45.69s +10°46'39.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Hard white A with B a haze, sharpened to point with averted vision. Well separated, 3 delta mag.
STF1374 AB 7m3 8m7 2.8'' 311° 2017 LMi 09h41m21.88s +38°57'01.90"
Robert Zebahl
Leipzig (Germany)
120mm (168x) At 50x elongated, at 75x seen as '8'. At 168x clearly split with obviously fainter component.
STT206 8m3 11m4 17.9'' 224° 2015 Leo 09h42m18.84s +17°04'55.60"
Mark McCarthy
Fremont (California/USA)
317mm (277x) AB is the widely separated ~1 delta mag. star, about 40". There's fainter star popping out with averted vision in between them, which is the AD pair, 11th mag.
Mark McCarthy
Fremont (California/USA)
317mm (277x) AB is the widely separated ~1 delta mag. star, about 40". There's fainter star popping out with averted vision in between them, which is the AD pair, 11th mag.
STT205 8m0 12m6 11.9'' 202° 2015 Lyn 09h42m29.17s +40°58'25.20"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Yellow and orange pair ~1 delta mag.
STT208, phi UMa 5m3 5m4 0.5'' 304° 2017 UMa 09h52m06.36s +54°03'51.40"
Uwe Pilz
Leipzig (Germany)
105mm (260x) länglich, schwierig
STT209 7m4 10m3 4.9'' 310° 2017 UMa 09h53m17.23s +50°37'16.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Light orange-yellow disk with faint diffraction ring. Extremely faint blue B ~4" can see it direct vision but it flashes forth with averted.
STF1399 7m7 8m4 30.2'' 176° 2017 Leo 09h57m02.21s +19°45'44.60"
Robert Zebahl
Leipzig (Germany)
70mm (22x) Easy to split with nice distance and obviously unequal. A conspicuous group of fainter stars is nearby. Main component appeared in a warm-white, fainter somehow darker (partly bluish, partly slightly orange).
Uwe Pilz
Leipzig (Germany)
105mm (53x) wie ein Schlangenbiß
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint pair, tough find dense with stars. 1 delta magnitude, wide separation.
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1399.png
STF1398 8m1 11m4 3.1'' 103° 2015 UMa 10h01m32.06s +68°43'05.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near M81 & M82! Did not see the 11th mag, 3" B star, tried really hard. To the south is a tight = red pair.
★★ STT210 8m5 9m1 1.2'' 256° 2015 UMa 10h02m35.64s +46°21'42.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow A and white B, very tight. Faint, seeing needs to be perfect to see B in the diffraction.
STF1406 8m4 9m4 0.7'' 219° 2017 LMi 10h05m38.57s +31°05'13.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very tight, kissing when seeing stills, 1 delta mag. white
★★ A2142 8m0 8m8 1.0'' 296° 2015 LMi 10h05m43.55s +41°02'42.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very fine, split, ~1-1.5". 8th magnitude and 1.5 delta mag B, close split, very nice pair. In the 80mm finder this is one of a triangle of equal magnitude stars.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very tight but clear split, ~1", 1 delta mag. A slightly green, B a little orange.
STF1405 7m3 11m8 22.0'' 252° 2015 LMi 10h05m55.92s +39°34'55.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 8th and 10th magnitudes. B is blurry with direct vision and flashes with averted. Wide split. A is white with a little yellow.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Yellow-white A, fairly faint blue B wide separation.
alpha Leo, 32 Leo, Regulus STFB6 AB 1m4 8m2 175.5'' 308° 2016 Leo 10h08m22.31s +11°58'01.90"
HDO127 AD 1m4 12m1 195.3'' 274° 2015
HDO127 BC 8m2 13m2 2.1'' 95° 2015
Uwe Pilz
Leipzig (Germany)
105mm (288x) AB: sehr weit; einfach
STF1407 10m2 10m6 4.9'' 51° 2018 UMa 10h09m01.98s +64°26'40.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal faint 10th-11th mag white stars, 4"
STF1413 9m8 9m8 1.8'' 271° 2017 Leo 10h12m18.72s +16°20'54.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very close ~2", very faint equal pair.
STT213 AB 8m6 9m8 1.1'' 121° 2017 Leo 10h13m08.88s +27°25'10.50"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Bright yellow A, ~2 magnitudes fainter B, very wide separation.
STF1417 9m2 9m3 2.4'' 77° 2017 Leo 10h15m08.60s +19°07'27.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint, close, but well split pair, 3", B resolves better with averted vision.
STT215 7m2 7m5 1.5'' 176° 2018 Leo 10h16m16.05s +17°44'24.60"
Robert Zebahl
Leipzig (Germany)
70mm (133x) Appeared partly separated, partly as '8'. Brightness seemed to be equal.
Uwe Pilz
Leipzig (Germany)
105mm (288x) trennbar bei 120x
Mark McCarthy
Fremont (California/USA)
317mm (277x) very close split (1.7" separation) near equal bright white stars
SHY552 7m4 8m8 107.2'' 2015 LMi 10h16m38.13s +41°16'33.00"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Pair of stars in a perfect triangle of widely separated stars looking like Leo's rump. ~8th, 8.5, and 9th mag.
STFA18, zet Leo 3m5 6m0 334.8'' 338° 2012 Leo 10h16m41.41s +23°25'02.40"
Rene Merting
Drachhausen (Germany)
100mm (32x) ein helles extrem weit getrenntes Paar - zwischen A im SO und B im NW sind etwas versetzt noch zwei schwache Sterne zu erkennen, aber beide ohne Bezug zu STFA18
BVD81 5m8 10m0 79.6'' 28° 2015 Leo 10h16m41.83s +25°22'14.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very wide 2-3 delta mag yellow-orange & whitish-yellow.
STF1419 8m9 9m9 4.4'' 224° 2016 Leo 10h17m02.94s +10°06'51.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very faint pair, 1 delta mag, PA west ~4-5"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1419.png
STT523, 39 Leo 5m8 11m3 7.9'' 300° 2017 Leo 10h17m14.53s +23°06'22.30"
Rene Merting
Drachhausen (Germany)
100mm (213x) bei 142x habe ich das Gefühl, Komponente B ab und an westlich von A ganz schwach im ersten Beugungsring ausmachen zu können, aber noch unsicher - bei 213x dann zeigt B sich eindeutig und kann ab und an auch mal länger gesehen werden
Mark McCarthy
Fremont (California/USA)
317mm (553x) Unremarkable star with wide, very faint B
STF1421 8m2 9m1 4.6'' 330° 2017 Leo 10h18m05.54s +27°31'27.90"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x ein schönes enges knapp getrenntes Pärchen - Komponente B im NW ist gut eine Größenklasse schwächer und wirkt dadurch dumpfer
Mark McCarthy
Fremont (California/USA)
317mm (553x) Not difficult, 1 delta mag, 5" or so. Bluish.
Berthold Fuchs
Wiesbaden (Germany)
130mm difficult DS ../projects/doublestars/berthold_fuchs/photographs/STF 1421.png
STF1420 9m1 10m6 2.2'' 318° 2015 LMi 10h18m33.30s +39°06'37.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint orange and 2 delta mag B ~2".
STF1423 9m4 10m1 0.7'' 311° 2017 Leo 10h19m10.64s +20°33'48.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Tough! Elongated to hairline split.
★★ STF1424, gamma Leo, 41 Leo, Algieba AB 2m4 3m6 4.7'' 127° 2017 Leo 10h19m58.35s +19°50'29.40"
Robert Zebahl
Leipzig (Germany)
55mm (38x) At 38x split, but very tight with noticeable difference in brightness. At 56x and higher beautiful view of both components, which seemed to have similar colors. ../projects/doublestars/robert_zebahl/sketches/2019-02-09_gamma_leo.jpg
Robert Zebahl
Leipzig (Germany)
55mm (59x) Very nice unequal double. A appeared yellow-orange, B rather white-bluish. ../projects/doublestars/robert_zebahl/sketches/2019-03-09_gamma_leo.jpg
Christopher Hay
Seeheim (Germany)
60mm (58x) At 25x Algieba is already very elongated. At 58x a sliver of dark between the components, with clear brightness difference. At 70x split becomes more stable, but view not so pleasing as at 58x. Both components display vivid orange.
Stefan Loibl
Rosenheim (Germany)
102mm (164x) very bright double star, slight colour contrast
Uwe Pilz
Leipzig (Germany)
105mm (120x) schon bei 37x sehenswert; trennbar bei 55x; orange-blauweiß
Robert Zebahl
Leipzig (Germany)
120mm (66x) At 48x easily seen as double star. It appeared as '8'. At 66x pretty tight with visible difference in brightness.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Algieba: Bright yellow and yellow-orange pair, 1 delta mag, 4-6"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright yellow and yellow-white, 1 delta mag.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very bright yellow, 1 delta mag wide.
STF1426 AB-C 7m3 9m4 7.6'' 2018 Leo 10h20m32.32s +06°25'47.60"
AB 8m0 8m3 0.9'' 313° 2017
Robert Zebahl
Leipzig (Germany)
102mm (160x) AB-C: Quite large angular distance and therefor easy to separate. The C component was pretty faint.
Robert Zebahl
Leipzig (Germany)
102mm (160x) AB: At first glance elongated, on closer look visible as '8'.
Stefan Loibl
Rosenheim (Germany)
102mm (164x) AB-C easily split, A-B not detectable as double
Uwe Pilz
Leipzig (Germany)
105mm (288x) A-B länglich, C weit
STF1425 9m9 10m7 4.8'' 358° 2017 UMa 10h21m34.14s +46°09'07.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very faint pair, ~4-5" orange and blue, 0.5 delta mag.
STF1427 8m2 8m5 9.3'' 215° 2018 UMa 10h22m00.53s +43°54'19.30"
Mark McCarthy
Fremont (California/USA)
317mm (277x) 8th magnitude orange star and a very wide 1 delta mag B.
★★ STT216 7m4 10m3 2.2'' 230° 2016 Leo 10h22m43.81s +15°20'39.70"
Mark McCarthy
Fremont (California/USA)
317mm (277x) A white and bright (7.3), B red & much fainter (10.3), a close split (2").
STF1429 9m1 9m3 0.8'' 155° 2017 Leo 10h25m01.79s +24°36'44.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very tough. Faint, need averted vision to brighten and sharpen. Elongated to clean split in the best moments with seeing, near equal magnitude
STF1431 7m8 9m1 3.6'' 74° 2017 Leo 10h25m35.12s +08°46'35.40"
Robert Zebahl
Leipzig (Germany)
70mm (67x) Separable at 67x, but very close together with a clear difference in brightness. Easy to separate at 100x. Next to it the star 44 Leo shines in a striking, bright orange.
Uwe Pilz
Leipzig (Germany)
105mm (88x) nahe 44 Leo
HJ832, 45 Leo 6m0 12m4 34.3'' 121° 2012 Leo 10h27m38.99s +09°45'44.70"
Uwe Pilz
Leipzig (Germany)
105mm (260x) nicht schwierig
ES1905 AB 8m6 12m6 41.6'' 68° 2015 UMa 10h30m16.09s +63°20'55.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White with 3x fainter, 11th mag, B. Very wide.
HJ482, 33 LMi 5m9 11m8 57.7'' 247° 2014 LMi 10h31m51.36s +32°22'46.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 33 LMi. Very bright A, with widely separated, very faint B.
STF1442 8m2 8m5 13.3'' 157° 2017 Leo 10h31m58.95s +22°02'22.00"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x schön anzusehen - ein eng stehendes Pärchen mit einem kaum spürbaren Helligkeitsunterschied - leichter Farbkontrast, der nicht wirklich greifbar ist - zurück auf 20x sind beide Sterne auch noch knapp getrennt erkennbar
Berthold Fuchs
Wiesbaden (Germany)
130mm difficult DS ../projects/doublestars/berthold_fuchs/photographs/STF 1442.png
STF1443 9m9 10m0 5.3'' 161° 2018 LMi 10h33m17.07s +37°40'25.00"
Robert Zebahl
Leipzig (Germany)
120mm (50x) At 50x split with little distance. At 75x clearly split with small difference in brightness.
Mark McCarthy
Fremont (California/USA)
317mm (553x) White, near equal, 3-4"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1443.png
STF1446 9m3 10m0 5.6'' 250° 2017 Leo 10h33m33.32s +15°12'49.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Two faint stars, pretty well separated, 1 delta mag.
STF1447 7m5 8m9 4.5'' 124° 2017 Leo 10h33m47.28s +23°21'02.40"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x ist Komponente B ganz schwach südöstlich von A knapp abgesetzt zu erkennen - Helligkeitsunterschied 2-3 Größenklassen (lt. Stelle Doppie nur 1.36 mag)
Mark McCarthy
Fremont (California/USA)
317mm (277x) Faint white and red-orange, PA to the east, pretty wide 6". Nice pair.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Both white, A (7.5) 2x brighter than B (8.9). Wide separation (4").
STF1448 AC 7m5 9m6 10.9'' 259° 2011 Leo 10h34m23.24s +21°35'36.40"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x zeigt sich Komponente C im NW von A knapp getrennt - C ist nur ein Hauch von einem Stern - Helligkeitsunterschied enorm, ich schätze 3 Größenklassen (nur 2 mag laut Stelle Doppie)
Mark McCarthy
Fremont (California/USA)
317mm (277x) Pretty orange and blue pair, 2 delta mag, ~10"
Mark McCarthy
Fremont (California/USA)
317mm (277x) An orange and blue pair. Fainter than Alberio but just as pretty.
STF1450, 49 Leo 5m8 7m9 2.2'' 156° 2017 Leo 10h35m02.16s +08°39'01.60"
Robert Zebahl
Leipzig (Germany)
70mm (133x) B component appeared as clear brightening on the first diffraction ring of the primary component in the correct position angle.
Uwe Pilz
Leipzig (Germany)
105mm (200x) Begleiter klebt am ersten Ring
Mark McCarthy
Fremont (California/USA)
317mm (277x) White and slight yellow, ~6-7", nice pair.
STF1454 9m0 11m0 1.3'' 353° 2010 LMi 10h38m11.10s +26°36'24.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Quite tough: averted vision only, very tight, similar magnitude, when seeing stills.
STT222 7m0 11m7 4.0'' 339° 2015 UMa 10h38m19.89s +60°07'30.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Extremely faint star, B seen with averted vision, PA to north.
STF1459 8m3 8m8 5.4'' 152° 2017 LMi 10h40m12.46s +38°24'11.40"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 32x muss ich sehr genau hinschauen, dann ist eine kleine 8 zu erkennen - bei 64x zeigen sich dann beide Sterne knapp getrennt - Komponente B im SO nicht ganz so glänzend weiß wie A
Robert Zebahl
Leipzig (Germany)
120mm (50x) Clearly split with noticeable difference in brightness.
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty yellow-orange, 0.5 delta mag, 5-6".
STT227 8m3 8m8 0.9'' 2017 Leo 10h41m41.58s +10°44'22.30"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Faint reddish pair, near equal, just split but hazy, poor view.
A2768 6m9 8m4 0.6'' 242° 2017 Sex 10h42m37.53s +03°34'58.90"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Feels like a not round disk, but uncertain.
BU913, 40 LMi AB 5m5 12m6 22.5'' 109° 2001 LMi 10h43m01.95s +26°19'32.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 40 LMi: Bright A, very faint B, very wide separation. B looks like a ghost.
STF1465 9m8 10m1 2.2'' 10° 2015 UMa 10h43m13.35s +44°37'41.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal well split ~3". 9th-10th mag.
STF1466, 35 Sex AB 6m2 7m1 6.7'' 239° 2017 Sex 10h43m20.91s +04°44'51.60"
Robert Zebahl
Leipzig (Germany)
102mm (28x) Very nice view. At 28x obviously unequal and easy to split. A appeared slightly orange. At 86x B appeared grey-blue. ../projects/doublestars/robert_zebahl/sketches/2019-04-06_35_sex.jpg
Mark McCarthy
Fremont (California/USA)
317mm (277x) Orange and a little blue, wide separation, bright, half a delta mag.
SMA75 AB 5m2 7m3 288.0'' 88° 2018 UMa 10h43m32.89s +46°12'13.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Wide 80mm finder pair, white and slight yellow. In the scope there are some more faint stars about, so it is likely a small cluster -- 7 stars in the system.
STF1468 9m7 9m7 4.3'' 334° 2017 Leo 10h44m39.96s +20°42'18.50"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Faint near equal, close but a nice split
STF1467 8m6 10m8 4.0'' 291° 2015 UMa 10h45m15.60s +44°58'11.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange star with extremely faint wide split B. Needed averted vision to notice it as a smudge but could see it with direct vision as a small blue point when seeing stills. ~2 delta mag.
S612, 42 LMi AB 5m3 7m8 196.2'' 174° 2015 LMi 10h45m51.91s +30°40'56.60"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Very widely separated, split in finder (196"!). white A with a slightly red B
Mark McCarthy
Fremont (California/USA)
317mm (553x) 42 LMi: Very bright white and 3 delta mag orange B, very wide separation.
STF1469 AB 7m7 10m4 10.9'' 324° 2015 UMa 10h47m43.86s +65°27'36.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White and 2x fainter B, wide.
★★ STT229 7m6 7m9 0.7'' 256° 2017 UMa 10h48m02.55s +41°06'35.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Just wider than a thin hair split of equal white stars, ~8th mag. 0.63"! in 40 years it will be 0.2"
STF1476, 40 Sex 7m1 7m8 2.4'' 17° 2017 Sex 10h49m17.31s -04°01'23.80"
Mark McCarthy
Fremont (California/USA)
317mm (340x) Tight white of equal brightness
S617 6m2 8m7 35.2'' 179° 2017 Leo 10h53m24.96s -02°15'18.80"
Mark McCarthy
Fremont (California/USA)
317mm (340x) Yellow A, blue B, wide separation
STF1483 9m5 9m6 2.4'' 243° 2017 UMa 10h54m30.84s +47°29'35.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Two near equal wide split, fairly faint, 9.5 mag.
SKF59 7m4 11m5 34.1'' 59° 2015 LMi 10h54m44.78s +36°45'31.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange-yellow star with very wide separated very faint B, need averted vision.
STF1486 8m4 9m7 31.6'' 100° 2015 UMa 10h55m01.14s +52°07'18.20"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x einfach, ordentliche Trennung - Komponente B im Osten ist halb so hell wie A - eigenartiger Farbkontrast, B wie so oft grau, aber A ist orangebraun - zurück auf 20x sind beide Sterne auch noch gut getrennt erkennbar
STF1487, 54 Leo 4m5 6m3 6.6'' 113° 2017 Leo 10h55m36.80s +24°44'59.00"
Robert Zebahl
Leipzig (Germany)
55mm (27x) At 27x split, but very tight with noticeable difference in brightness. At 71x easy to separate. No visible color difference.
Mark McCarthy
Fremont (California/USA)
317mm (277x) Bright white pair (4.5, 6.3) wide sep (6")
STF1492 8m0 10m2 21.6'' 165° 2017 LMi 10h57m35.85s +30°39'09.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 3 delta mag white with widely separated B
STF1491 AB 8m4 11m3 14.1'' 33° 2017 UMa 10h58m50.42s +61°42'56.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Orange and blue, pretty wide, ~3 delta mag.
STF1495 7m2 8m8 34.2'' 36° 2016 UMa 10h59m49.47s +58°54'23.30"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x ein weit getrenntes Paar - Komponente B im NO ist knapp zwei Magnituden schwächer - A strahlend weiß, B die graue Maus, wie es sich gehört für die schwächere Komponente - zurück auf 20x immernoch ordentliche Trennung, der Helligkeitsunterschied wirkt nicht mehr ganz so groß
UC2059 AB 7m5 10m7 45.3'' 46° 2014 UMa 11h01m45.73s +36°40'41.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty well separated, 1.5 delta mag, not remarkable as I hoped given the odd designation.
COU1422 Ba-Bb 11m2 11m5 0.6'' 38° 2008 UMa 11h01m48.52s +36°41'14.60"
Mark McCarthy
Fremont (California/USA)
762mm (1219x) Cou 1422 is a pair of 11th magnitude stars very close to UC 2059 -- best I could get of Cou 1422 was an elongation with the seeing. Tried 1219x without improving the elongation.
STF1504 7m9 8m1 1.2'' 123° 2017 Leo 11h03m58.93s +03°38'19.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White near equal, ~2", nice.
HZG8, 51 UMa AC 6m0 7m6 150.1'' 83° 2017 UMa 11h04m31.28s +38°14'28.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Very wide separation 1.5" mag. This is AC of 51 UMa, AB is Ho 377 which is 6.04,11.60 and 8.2"
★★ HO378 AB 8m2 9m1 1.1'' 237° 2017 UMa 11h04m57.29s +38°24'38.20"
Mark McCarthy
Fremont (California/USA)
317mm (553x) In a pretty cluster in the finder (~ 12 stars loose and poor, wide magnitude range, triangle shape). Pair is a fine split 1 delta mag 1", ice blue A and slightly yellow B.
★★ BU599, 65 Leo 5m7 9m7 2.8'' 106° 2015 Leo 11h06m54.20s +01°57'19.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Bright light orange star. As seeing resolves it to a disk and eliminates the diffraction, a tiny, faint star appears, planet-like, (~3") from the star. Only at the best moments, visibility of B star helped by averted vision.
STF1510 7m7 9m0 5.5'' 328° 2018 UMa 11h08m00.06s +52°49'17.90"
Rene Merting
Drachhausen (Germany)
100mm bei 32x wirkt der Stern leicht länglich - bei 64x dann gelingt die Trennung - Komponente B hängt nordwestlich über A und ist mehr als eine Größenklasse schwächer - ein schönes enges Paar bei dieser Vergrößerung - B wirkt trotz des Größenunterschiedes nicht so schmutzig grau, wie es sonst immer ist
STF1512 9m3 9m5 9.9'' 51° 2015 UMa 11h09m13.09s +62°29'51.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty, near equal bluish-white stars
STF1514 9m5 10m6 1.3'' 341° 2015 UMa 11h11m38.55s +66°06'48.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Extremely fine! It is at the base of a kite asterism, the fainter star of four. The three arcing the top of the kite are equal magnitude. STF 1514 is a very tight 1.5" but clean split, 1 delta mag. Nice!
ENG45 AB 7m2 8m3 135.0'' 247° 2016 UMa 11h11m48.95s +42°49'55.60"
Mark McCarthy
Fremont (California/USA)
80mm (13x) Finder split, white, 0.5 delta mag.
HO50 6m5 8m4 3.0'' 35° 2017 UMa 11h13m40.09s +41°05'19.80"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Good disk of A star with momentary perfection, but cannot see B, I think the magnitue in WDS is overstated.
Mark McCarthy
Fremont (California/USA)
762mm (457x) The pair split immediately at 457x. A little diffraction but no doubt a small blue point just outside the first ring. Using the 8-inch aperture mask (effectively 8-inch f/18!) had a nice star image of A but B disappeared -- it became an averted vision, threshold object. Barlow here was no help to show it better. I think Ho 50B is fainter than the current data, and if the older data say it should be fainter, then it may well be variable. However, later in the night, I estimated Ho 50B to be as bright as STF 1964D, which is 9.02
STF1517 AB 7m5 8m0 0.7'' 314° 2017 Leo 11h13m40.99s +20°07'43.30"
Uwe Pilz
Leipzig (Germany)
105mm (200x) länglich ../projects/doublestars/uwe_pilz/sketches/200327stf1517.jpg
Mark McCarthy
Fremont (California/USA)
317mm (340x) Very tight, hair split small orange stars of equal magnitude. Wow!
STT573, del Leo ? AB 2m5 10m9 202.7'' 341° 2014 Leo 11h14m06.51s +20°31'25.80"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x habe ich zunächst den 9.7 mag hellen Stern SAO 81724 westnordwestlich für Komponente B gehalten - Komponente B habe ich auch gesehen, sie aber für einen weitere Komponenten gehalten - B stand nur 1/3 soweit nördlich von A und ist noch schwächer - Helligkeitsunterschied nicht abschätzbar - der Doppelstern ist kein Burner
STF1521 7m7 8m1 3.7'' 98° 2017 Leo 11h15m20.95s +27°34'15.60"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 64x sehe ich eine Ameise, die Komponenten A und B etwas gleich hell, noch nicht getrennt - bei 107x sind beide etwas mehr als knapp getrennt zu erkennen, B im Osten ist etwas schwächer
Berthold Fuchs
Wiesbaden (Germany)
130mm close DS ../projects/doublestars/berthold_fuchs/photographs/STF 1521.png
★★ STF1519 9m0 9m9 1.5'' 289° 2017 UMa 11h15m36.65s +59°46'43.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) 1 delta mag, tight 1.5" faint yellow stars.
STF1520 6m5 7m8 12.4'' 344° 2017 UMa 11h16m04.03s +52°46'23.40"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x ein knapp getrenntes Pärchen, auffällig im Umfeld - Komponente B ist eine Größenklasse schwächer - zurück auf 20x noch schönerer Eindruck, beider Sterne können noch ganz knapp getrennt voneinander gesehen werden
★★★ STF1523, xi UMa, 53 UMa, Alula Australis AB 4m3 4m8 1.9'' 166° 2017 UMa 11h18m10.90s +31°31'45.00"
Robert Zebahl
Leipzig (Germany)
55mm (83x) 2019-02-09: Already seen as '8' at 83x. At 125x the overlapping of both Airy disks was visible, but also a slight difference in brightness. ../projects/doublestars/robert_zebahl/sketches/2019-02-09_xi_uma.jpg
Robert Zebahl
Leipzig (Germany)
70mm (100x) 2018-02-18: Very close together with similar brightness. At first glance seen as an '8', looking closer I partly split both components. Similar view also at 128x.
Robert Zebahl
Leipzig (Germany)
70mm (133x) 2020-03-15: Splendid sight! Beautifully separated with almost touching diffraction disks. The rather small difference in brightness was well visible. The diffraction rings of both components coalesced.
Robert Zebahl
Leipzig (Germany)
102mm (160x) 2020-03-16: Awesome! Bright with lovely, subtle diffraction rings. The distance between both components is a smaller than the diameter of the diffraction disk of the fainter component.
Uwe Pilz
Leipzig (Germany)
105mm (288x) Gemessen: 162°
Robert Zebahl
Leipzig (Germany)
120mm (168x) 2018-02-14: Well split with slight difference in brightness.
Robert Zebahl
Leipzig (Germany)
152mm (129x) 2019-02-06: Well split with visible difference in brightness. The colors of both components appeared equal.
STF1524, nu UMa, 54 UMa, Alula Borealis AB 3m6 10m1 7.8'' 145° 2015 UMa 11h18m28.74s +33°05'39.50"
Mark McCarthy
Fremont (California/USA)
317mm (277x) Tight white near equal pair.
STT233 AB 7m2 10m2 4.7'' 335° 2015 UMa 11h18m46.75s +66°41'03.30"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White with 3-4x fainter B, well separated. ~10th mag. Seeing needs to still.
STF1525 9m9 9m9 2.3'' 173° 2017 UMa 11h19m29.37s +47°28'12.60"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Near equal faint, 9th-10th mag, 3".
STF1536, iot Leo AB 4m1 6m7 2.1'' 97° 2017 Leo 11h23m55.37s +10°31'46.90"
Mark McCarthy
Fremont (California/USA)
317mm (340x) Quite close, very bright yellow white A and brownish B, split in A's diffraction ring.
STF1537 8m2 9m1 2.3'' 358° 2017 Leo 11h24m28.94s +20°37'16.50"
Rene Merting
Drachhausen (Germany)
100mm (107x) bei 64x stäbchenförmig - bei 107x zeigt sich das Paar wie eine 8, die keine mehr sein will - in ruhigen Momenten ist eine knappe Trennung erkennbar - Komponente B steht nördlich von A und ist nur unwesentlich schwächer
HJ4433, 81 Leo AB 5m6 10m8 55.2'' 2014 Leo 11h25m36.37s +16°27'23.50"
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x ploppt Komponente B weit getrennt nördlich von A auf, vorher war sie unsichtbar - B versteckt sich halb im Glanz von A - schönes Versteckspiel
Mark McCarthy
Fremont (California/USA)
317mm (170x) bright orange-yellow A with a much fainter blue B, widely separated, a beautiful sight.
Mark McCarthy
Fremont (California/USA)
317mm (340x) 81 Leonis: Bright yellowish A, very faint bluish B, wide separation
★★ STF1540, 83 Leo AB 6m5 7m5 28.1'' 149° 2017 Leo 11h26m45.32s +03°00'47.20"
Stefan Loibl
Rosenheim (Germany)
10x50 clearly split, little difference in magnitude
Robert Zebahl
Leipzig (Germany)
55mm (16x) Wonderful double with slight color contrast in a very nice field. Together with tau Leo stunning view. Slightly unequal. A appeared white-yellowish, B rather grey-bluish. ../projects/doublestars/robert_zebahl/sketches/2019-03-09_83_leo_tau_leo.jpg
Mark McCarthy
Fremont (California/USA)
80mm (13x) Finder split, in same field as Tau.
Mark McCarthy
Fremont (California/USA)
317mm (340x) Yellow A and reddish B wide separation.
STF1541 8m0 10m1 7.8'' 27° 2015 UMa 11h27m39.46s +46°17'33.40"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Pretty yellow-white and slight blue, 1-1.5 delta mag, wide ~4".
★★ STFA19, 84 Leo, tau Leo AB 5m0 7m5 88.5'' 182° 2018 Leo 11h27m56.23s +02°51'22.50"
Robert Zebahl
Leipzig (Germany)
55mm (16x) Wonderful double with slight color contrast in a very nice field. Together with 83 Leo stunning view. Noticeable unequal. A appeared white-yellowish with a hint of orange, B grey-bluish. ../projects/doublestars/robert_zebahl/sketches/2019-03-09_83_leo_tau_leo.jpg
Mark McCarthy
Fremont (California/USA)
80mm (13x) Finder split, the A star is prismatic in color effects, bluish B
Mark McCarthy
Fremont (California/USA)
317mm (340x) Bright yellow A, bluish B, very widely separated
STF1539 8m5 9m8 19.4'' 313° 2015 Cam 11h30m18.10s +81°02'14.30"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x ein ganz feiner Doppelstern, ordentliche Trennung - Komponente A ist grau-weiß und die gut eine Größenklasse schwächere Komponente B … hm strahlt erstmal farblos, je länge ich drauf schaue, desto mehr rot-bräunlicher wird der Eindruck
STF1544 7m3 8m0 12.2'' 91° 2016 UMa 11h31m18.57s +59°42'03.30"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x der Prototyp des idealtypischen engen Doppelsternpaares - zwei schön aneinander geschmiegte Sterne, knapp getrennt - Komponente B im Osten ist eine halbe Größenklasse schwächer
STF1547, 88 Leo AB 6m3 9m1 15.6'' 332° 2017 Leo 11h31m44.94s +14°21'52.20"
Robert Zebahl
Leipzig (Germany)
55mm (42x) Well split with moderate distance. Primary component appeared white-yellowish. Pretty unequal pair.
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x erscheint Komponente B nordwestlich von A etwas mehr als knapp getrennt ganz schwach, bestimmt 3 Größenklassen Helligkeitsunterschied - Komponente A warmweiß, B ist grau
Mark McCarthy
Fremont (California/USA)
317mm (340x) Bright yellow A, 3x fainter red B. Wide separation.
Mark McCarthy
Fremont (California/USA)
317mm (340x) 88 Leonis: A favorite! Yellow and blue pair, wide
★★ STT235 AB 5m7 7m5 0.9'' 43° 2017 UMa 11h32m20.76s +61°04'57.90"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Nice! Yellow and orange, 1.5 delta mag, split when seeing shows perfect disks. The stars both show albedo effects, look like suns / globes with shadowing.
★★ STF1552, 90 Leo AC 6m3 9m8 62.8'' 235° 2017 Leo 11h34m42.50s +16°47'48.90"
AB 6m3 7m3 3.5'' 209° 2017
Robert Zebahl
Leipzig (Germany)
55mm (42x) AB: A and B very tight and unequal. Much fainter component C very wide apart. All components almost in line. Very nice view. ../projects/doublestars/robert_zebahl/sketches/2019-03-09_90_leo.jpg
Mark McCarthy
Fremont (California/USA)
317mm (170x) AB: 90 Leonis, a close but easily split pair at 170x, a yellow-white A and a bluish-white B.
STF1555 AB 6m4 6m8 0.8'' 149° 2016 Leo 11h36m17.94s +27°46'52.70"
Frederik Wanink
Itterbeck (Germany)
254mm (640x) blickweise gerade eben trennbar ../projects/doublestars/frederik_wanink/sketches/STF1555.jpg
Mark McCarthy
Fremont (California/USA)
317mm (443x) Nice! AB tight hair-split white pair, with fainter & wide separated AB-C in a row to the east.
HJ503 AB-C 5m8 11m2 22.5'' 156° 2016 Leo 11h36m17.94s +27°46'52.70"
Mark McCarthy
Fremont (California/USA)
317mm (443x) Nice! STF 1555AB tight hair-split white pair, with fainter & wide separated C in a row to the east.
STT575, 62 UMa AB 5m8 9m8 46.4'' 310° 2012 UMa 11h41m34.26s +31°44'45.80"
Rene Merting
Drachhausen (Germany)
100mm bei 32x habe ich B zunächst suchen müssen - Komponente A ist schön hell, B zeigt sich in ordentlichem Abstand nordwestlich von A, Helligkeitsunterschied 3 Magnituden - zurück auf 20x kann ich B auch noch wahrnehmen, aber nur weil ich wusste, wohin ich schauen muss
Mark McCarthy
Fremont (California/USA)
317mm (443x) 62 UMa. Bright and 3 delta mag wide B.
STF1568 10m4 10m5 9.2'' 43° 2015 Vir 11h43m16.61s +00°45'40.10"
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1568.png
HU729 7m1 10m9 1.5'' 346° 2015 UMa 11h47m50.02s +49°49'22.70"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White star resolves to disk with seeing, but B not there. Apodizing mask did not help resolve.
STFB7, 93 Leo AB 4m6 9m0 77.0'' 356° 2015 Leo 11h47m59.23s +20°13'08.20"
Stefan Loibl
Rosenheim (Germany)
10x50 weak companion directly visible most of the time
Rene Merting
Drachhausen (Germany)
100mm (64x) bei 64x extrem weit getrennt, Komponente B im Norden ist mindestens 3 Größenklassen schwächer - A wirkt cremeweiß, B ist eine graue Maus - kaum weitere Sterne im unmittelbaren Umfeld
BU603 AB 6m0 8m5 1.0'' 332° 2014 Leo 11h48m38.71s +14°17'03.20"
Uwe Pilz
Leipzig (Germany)
105mm (288x) nicht getrennt
ARG101 6m3 9m3 46.2'' 274° 2016 UMa 11h51m09.51s +33°22'30.00"
Mark McCarthy
Fremont (California/USA)
317mm (553x) White star 8th mag, with very faint 2 delta mag very wide B.
STF1575 7m4 7m9 30.7'' 209° 2015 Vir 11h51m57.57s +08°49'48.00"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x ein schön getrenntes Sternpaar mit zwei ähnlich hellen Sternen - Komponente B im SW ist maximal eine halbe Größenklasse schwächer - deutlich wahrnehmbarer Farbkontrast, A ist weißgelb, B dagegen wirkt blaugrau
Berthold Fuchs
Wiesbaden (Germany)
130mm easy DS ../projects/doublestars/berthold_fuchs/photographs/STF 1575.png
SHJ132 AB 6m9 10m2 39.0'' 14° 2015 Leo 11h52m46.22s +15°26'10.70"
Rene Merting
Drachhausen (Germany)
100mm (20x) bei 32x zeigt sich Komponente B ganz schwach und steht in komfortablem Abstand zu A - Helligkeitsunterschied 3 bis 4 Magnituden - zurück auf 20x ist B noch gerade so zu erkennen, bei immernoch ordentlicher Trennung
STF1579, 65 UMa AB-C 6m7 8m3 3.8'' 40° 2017 UMa 11h55m05.74s +46°28'36.60"
AB-D 6m7 7m0 63.7'' 113° 2017
Robert Zebahl
Leipzig (Germany)
55mm (27x) AB-D: Easy to separate with large distance and very small difference in brightness. The D component showed a bluish tint, the lighter one (AB) a slightly yellowish tint. At higher magnification also the faint C component is visible.
Robert Zebahl
Leipzig (Germany)
55mm (83x) AB-C: Easy to split, but the faint C component only appeared as a tiny star. ../projects/doublestars/robert_zebahl/sketches/2019-02-09_65_uma.jpg
Robert Zebahl
Leipzig (Germany)
../projects/doublestars/robert_zebahl/photographs/2020-04-06_65_uma.jpg
STF1582 8m1 9m5 12.0'' 76° 2015 Leo 11h56m00.86s +21°58'54.80"
Rene Merting
Drachhausen (Germany)
100mm (32x) bei 32x zeigt sich B sehr schwach, knapp getrennt östlich von A - Helligkeitsunterschied 2 Größenklassen
STT243 9m1 9m7 1.2'' 2017 UMa 11h59m48.70s +53°23'52.10"
Mark McCarthy
Fremont (California/USA)
317mm (553x) Super tight split ~1", faint, white, 1 delta mag. M109 is nearby just in of FOV. This pair just beneath its core