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Last update: 2018-09-23

VdS FG

- Double Stars (Boo) -

And (7) Cas (11) CVn (2) Her (2) Ori (7) UMa (3)
Aql (4) Cep (3) Cyg (5) Leo (1) Peg (4)
Ari (4) CMa (1) Del (2) LMi (4) Per (1)
Boo (4) Com (1) Dra (1) Lyr (2) Psc (1)
Cam (2) CrB (3) Gem (2) Oph (1) Tau (5)

STF1834 (**)

Name: STF1834
Type: **
Constellation: Boo
Coordinates: 14h20m17.60s / +48°30'25.10"
Components: v8.1 mag / v8.3 mag / 1.7" / 105° / 2016
120mm f/5, 150x, Bortle 6, NELM 5.0+, SQM-L 19.4
At 108x elongated, at 150x barely split with similar bright components.

STF1877 (**)

Name: STF1877, epsilon Boo, Izar
Type: **
Constellation: Boo
Coordinates: 14h44m59.14s / +27°04'29.90"
Components: AB / v2.6 mag / v4.8 mag / 2.9" / 343° / 2015
55mm f/9.1, 125x
The fainter component was seen as permanent brightening on the first diffraction ring of the main component.

60mm f/10, 192x, Bortle 6-, SQM-L 19.1
Easy to split, whereby the much fainter component lies on the first diffraction ring of the main component. The main component itself appeared slight yellowish.

SKETCH

120mm f/5, 192x, Bortle 4, SQM-L 21.3
At 85x the fainter component was easily visible but not separated. At 192x well split. The fainter component was almost on the first diffraction ring of the main component. Quite big difference in brightness. I did not looked at the color of the components.

STFA28 (**)

Name: STFA28, mu 1 Boo, 51 Boo
Type: **
Constellation: Boo
Coordinates: 15h24m29.54s / +37°22'37.10"
Components: AB / v4.3 mag / v7.1 mag / 109.0" / 171° / 2016
B 40mm, 8x, Bortle 7, NELM 5.0, SQM-L 19.2
Easily split with obvious difference in brightness.

120mm f/5, 23x, Bortle 6, NELM 5.0+, SQM-L 19.4
Easy to split with large angular distance and noticeable difference in brightness.

STT298 (**)

Name: STT298
Type: **
Constellation: Boo
Coordinates: 15h36m02.22s / +39°48'08.90"
Components: AB-C / v6.9 mag / v7.8 mag / 121.6" / 328° / 2013
120mm f/5, 23x, Bortle 6, NELM 5.0+, SQM-L 19.4
Easy to split with large angular distance and noticeable difference in brightness.