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Last update: 2019-03-13

VdS FG

- Double Stars (Gem) -

And (13) Cas (12) CVn (2) Her (3) Oph (1) Tri (3)
Aql (4) Cep (9) Cyg (5) Leo (6) Ori (8) UMa (5)
Ari (5) CMa (1) Del (2) LMi (4) Peg (4)
Aur (15) Cnc (2) Dra (1) Lyn (10) Per (3)
Boo (4) Com (1) Eri (1) Lyr (2) Psc (1)
Cam (2) CrB (3) Gem (9) Mon (1) Tau (6)

STF899 (**)

Name: STF899
Type: **
Constellation: Gem
Coordinates: 06h22m49.64s / +17°34'27.30"
Components: v7.4 mag / v8.0 mag / 2.2" / 18° / 2017
70mm f/5.7, 133x
Separated, but tight with visible difference in brightness.

STF932 (**)

Name: STF932
Type: **
Constellation: Gem
Coordinates: 06h34m21.57s / +14°45'08.30"
Components: v8.3 mag / v8.5 mag / 1.7" / 305° / 2012
70mm f/5.7, 150x
Unfortunately a nearby lamp bothered me. I could see the double star at least elongated.

STF982 (**)

Name: STF982, 38 Gem
Type: **
Constellation: Gem
Coordinates: 06h54m38.63s / +13°10'40.10"
Components: AB / v4.8 mag / v7.8 mag / 7.3" / 143° / 2017
55mm f/9.1, 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.

70mm f/5.7, 33x
Easy to separated with noticeable difference in brightness. The fainter component appeared slightly orange, the brighter one rather white.

STF1066 (**)

Name: STF1066, delta Gem, 55 Gem
Type: **
Constellation: Gem
Coordinates: 07h20m07.39s / +21°58'56.40"
Components: v3.5 mag / v8.2 mag / 5.5" / 230° / 2016
55mm f/9.1, 71x
Large difference in brightness. The fainter component was well separated, but just a very tiny star.

STF1083 (**)

Name: STF1083
Type: **
Constellation: Gem
Coordinates: 07h25m35.30s / +20°29'42.60"
Components: v7.3 mag / v8.1 mag / 6.8" / 46° / 2014
70mm f/5.7, 22x
Unequal pair. At 22x very tight, at 44x well split. Fainter companion appeared slightly orange, brighter one white-bluish.

STF1094 (**)

Name: STF1094
Type: **
Constellation: Gem
Coordinates: 07h27m25.99s / +15°18'59.00"
Components: v7.6 mag / v8.5 mag / 2.7" / 100° / 2014
70mm f/5.7, 57x
At 57x barely split with noticeable difference in brightness. At 100x well split, but still tight.

STF1110 (**)

Name: STF1110, alpha Gem, 66 Gem, Castor
Type: **
Constellation: Gem
Coordinates: 07h34m35.86s / +31°53'17.80"
Components: AB / v1.9 mag / v3.0 mag / 5.2" / 54° / 2017
70mm f/5.7, 44x, Bortle 6
At 44x the double star appeared as an '8'. At 100x clearly split with noticeable difference in brightness. Both components appeared white.

STF1140 (**)

Name: STF1140
Type: **
Constellation: Gem
Coordinates: 07h48m22.61s / +18°20'12.40"
Components: v7.0 mag / v8.7 mag / 6.2" / 275° / 2013
70mm f/5.7, 44x
Easy to separate with quite clear difference in brightness.

STT179 (**)

Name: STT179, kappa Gem, 77 Gem
Type: **
Constellation: Gem
Coordinates: 07h44m26.87s / +24°23'53.30"
Components: v3.7 mag / v10.0 mag / 7.2" / 241° / 2014
70mm f/5.7, 133x
Observation at nearly full moon: Fainter companion was not visible.

120mm f/5, 200x, Bortle 6-, SQM-L 18.9
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.