- Double Stars (Lyn) -

And (31) Cep (13) CVn (3) Her (12) Ori (8) Tri (5)
Aql (9) Cet (1) Cyg (19) Leo (11) Peg (16) UMa (10)
Ari (8) CMa (1) Del (2) LMi (4) Per (18) UMi (1)
Aur (27) Cnc (7) Dra (8) Lyn (11) Psc (7) Vir (6)
Boo (8) Com (1) Equ (5) Lyr (8) Ser (3)
Cam (5) CrB (4) Eri (1) Mon (1) Sex (1)
Cas (17) Crv (1) Gem (19) Oph (1) Tau (11)

STF948 (**)

Name: STF948, 12 Lyn
Type: **
Constellation: Lyn
Coordinates: 06h46m14.15s / +59°26'30.10"

Components:
m1 m2 ρ θ Year
AB 5m4 6m0 1.9" 66° 2018
AC 5m4 7m0 8.8" 310° 2018
55mm f/9.1, 167x
AB: Components A and B separated, whereby the Airy disks slightly overlap. The difference in brightness was well visible.

../sketches/2019-01-21_stf948.jpg

55mm f/9.1, 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.

63mm f/13.3, 140x
AB: Components A and B split with almost no space in between. The difference in brightness was visible.

../sketches/2019-01-22_stf948.jpg

70mm f/5.7, 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.

../sketches/2019-01-20_stf948.jpg

70mm f/5.7, 22x
AC: Well split, relatively close together with significant difference in brightness.

STF958 (**)

Name: STF958
Type: **
Constellation: Lyn
Coordinates: 06h48m12.29s / +55°42'15.10"

Components:
m1 m2 ρ θ Year
AB 6m3 6m3 4.5" 77° 2018
70mm f/5.7, 33x
Clearly split, equally bright, close together. Nice view.

STF1009 (**)

Name: STF1009
Type: **
Constellation: Lyn
Coordinates: 07h05m39.83s / +52°45'31.30"

Components:
m1 m2 ρ θ Year
AB 6m9 7m0 4.4" 149° 2018
70mm f/5.7, 33x
Very nice view. Equally bright components, tight.

STF1050 (**)

Name: STF1050
Type: **
Constellation: Lyn
Coordinates: 07h19m51.29s / +54°55'18.40"

Components:
m1 m2 ρ θ Year
AB 8m1 8m8 19.3" 21° 2017
70mm f/5.7, 22x
Rather faint, obviously split with visible difference in brightness. View similar to STF 1062.

STF1062 (**)

Name: STF1062, 19 Lyn
Type: **
Constellation: Lyn
Coordinates: 07h22m52.06s / +55°16'53.30"

Components:
m1 m2 ρ θ Year
AB 5m8 6m7 14.8" 316° 2018
70mm f/5.7, 22x
Clearly separated, moderate distance, noticeable difference in brightness. The colors seemed different, but not exactly definable.

STF1065 (**)

Name: STF1065, 20 Lyn
Type: **
Constellation: Lyn
Coordinates: 07h22m15.11s / +50°08'55.70"

Components:
m1 m2 ρ θ Year
7m5 7m7 14.9" 256° 2017
70mm f/5.7, 22x
Nicely split, moderate distance, similarly bright.

STF1282 (**)

Name: STF1282
Type: **
Constellation: Lyn
Coordinates: 08h50m44.28s / +35°04'15.40"

Components:
m1 m2 ρ θ Year
AB 7m6 7m8 3.5" 280° 2018
70mm f/5.7, 57x, Bortle 6, SQM-L 19.4
Clearly separated, but close together with very little difference in brightness. The double star forms an acute-angled triangle together with two other stars.

STF1289 (**)

Name: STF1289
Type: **
Constellation: Lyn
Coordinates: 08h54m44.33s / +43°35'04.70"

Components:
m1 m2 ρ θ Year
8m2 8m9 3.6" 2018
70mm f/5.7, 57x, Bortle 6, SQM-L 19.4
Quite faint double star, but easy to separate with a noticeable difference in brightness and close components.

STF1333 (**)

Name: STF1333
Type: **
Constellation: Lyn
Coordinates: 09h18m25.97s / +35°21'51.30"

Components:
m1 m2 ρ θ Year
6m6 6m7 1.9" 50° 2017
63mm f/13.3, 120x
At 93x seen as '8', at 120x split, but pretty tight with no visible difference in brightness.

STF1334 (**)

Name: STF1334, 38 Lyn
Type: **
Constellation: Lyn
Coordinates: 09h18m50.64s / +36°48'09.30"

Components:
m1 m2 ρ θ Year
AB 3m9 6m1 2.5" 229° 2017
63mm f/13.3, 140x
Fainter companion only seen as permanent brightening on the first diffraction ring.

../sketches/2019-01-22_stf1334.jpg

STT174 (**)

Name: STT174
Type: **
Constellation: Lyn
Coordinates: 07h35m56.00s / +43°01'51.40"

Components:
m1 m2 ρ θ Year
6m6 8m3 1.9" 92° 2017
70mm f/5.7, 133x
The obviously fainter component could be permanently seen in the right position angle as brightening on the first diffraction ring.