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Last update: 2017-11-29

VdS FG

- Double Stars (Cyg) -

This is just a small selection of evident, quite recommendable double stars. Some of these I have 'found' during starhopping.

And (6) Boo (1) Com (1) Del (2) Peg (4) Tau (5)
Aql (3) Cas (11) CVn (2) Her (2) Per (1) UMa (1)
Ari (4) Cep (3) Cyg (4) Oph (1) Psc (1)

30 Cyg (**)

Name: 30 Cyg, STFA50
Type: **
Constellation: Cyg
Coordinates: 20h13m37.90s / +46°44'28.80"
Components: AD / v3.9 mag / v4.8 mag / 336.7" / 322° / 2016
The two components are 30 and 31 Cyg (omicron 1 Cyg).

B 40mm, 8x, Bortle 6-, NELM 5.0
Wonderful double star for binoculars. Large distance of the components, brighter once (31 Cyg) appeared slightly orange, the fainter (Cyg 30) more blueish.

30 Cyg (**)

Name: 30 Cyg, STFA50
Type: **
Constellation: Cyg
Coordinates: 20h13m37.90s / +46°44'28.80"
Components: AC / v3.9 mag / v7.0 mag / 108.6" / 173° / 2016
Brighter component is 31 Cyg (omicron 1 Cyg).

B 40mm, 8x, Bortle 7, NELM 5.0, SQM-L 18.6
Observation at full moon. Easily split with big difference in brightness. Brighter component slightly orange. C-component rather faint.

80mm f/6.25, 25x, Bortle 7, NELM 5.0, SQM-L 18.6
Similar to the observation with binoculars. C-component appeared blueish and gave good contrast to the orange colored 31 Cyg.

beta Cyg (**)

Name: beta Cyg, 6 Cyg, Albireo, STFA43
Type: **
Constellation: Cyg
Coordinates: 19h30m43.29s / +27°57'34.90"
Components: AB / v3.2 mag / v4.7 mag / 34.7" / 54° / 2016
B 40mm, 8x, Bortle 5, NELM 5.5
Well split, but I didn't recognised any color.

80mm f/6.25, 25x
One of the most beautiful double stars in the northern hemisphere. Differences in brightness and color (orange-blue) are brilliant! Even under urban conditions with small aperture an enjoyment!

mu Cyg (**)

Name: mu Cyg, 78 Cyg, STF2822
Type: **
Constellation: Cyg
Coordinates: 21h44m08.57s / +28°44'33.40"
Components: AB / v4.8 mag / v6.2 mag / 1.8" / 321° / 2016
70mm f/5.7, 133x
At 133x I was able to see this double at least elongated.

8" f/6, 171x, Bortle 5, NELM 5.7, SQM-L 20.6
Quite well split with noticeable fainter component.