beta Cyg (**)
|
Name: |
beta Cyg, 6 Cyg, Albireo, STFA43 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
19h30m43.29s / +27°57'34.90" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
3m2 |
4m7 |
34.6" |
54° |
2019 |
|
Robert Zebahl |
B 16x70, Bortle 7, SQM-L 18.6
2020-07-06: Bright orange & white-bluish.
|
|
B 8x40, Bortle 5, NELM 5m5
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!
|
|
|
BLL 49 (**)
|
Name: |
BLL49, U Cyg |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h19m41.66s / +47°54'19.90" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
8m0 |
9m0 |
65.4" |
231° |
2015 |
|
Robert Zebahl |
B 16x70
2020-07-03: Easy split with very good color contrast: white and clear orange.
|
|
102mm f/11, 28x, Bortle 6+, SQM-L 19.4
2019-08-22: While the primary component appears quite unspectacular in a white, the companion U Cygni is much more interesting. It is a carbon star whose brightness varies between 5m9 and 12m1 with a period of about 463 days. It appears in mostly intensely orange, and even deep red in the towards its minimum. Extremely rewarding!
|
|
|
BU 67 (**)
|
Name: |
BU67 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h50m36.05s / +30°54'45.70" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
6m8 |
9m9 |
1.5" |
310° |
2015 |
|
Robert Zebahl |
152mm f/5.9, 270x, Bortle 6
Not split.
|
|
|
BU 167 (**)
|
Name: |
BU167 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
21h36m13.98s / +30°03'19.50" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
6m4 |
9m9 |
1.7" |
89° |
2016 |
|
Robert Zebahl |
152mm f/5.9, 360x, Bortle 6-
The much fainter component was only occasionally visible as a clear brightening of the first diffraction ring. The diffraction ring itself was only indicated and not visible all around. Difficult.
|
|
|
LSL 1 (**)
|
Name: |
LSL1, Lassell 1 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
21h34m45.16s / +32°04'42.60" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
10m6 |
11m7 |
82.1" |
82° |
2015 |
|
AC |
10m6 |
12m1 |
106.1" |
127° |
2015 |
|
AD |
10m6 |
11m9 |
21.2" |
134° |
2015 |
|
AE |
10m6 |
13m5 |
10.5" |
331° |
2015 |
|
BF |
11m7 |
12m1 |
18.4" |
210° |
2015 |
|
CG |
12m1 |
14m4 |
11.5" |
199° |
2015 |
|
Robert Zebahl |
152mm f/5.9, 180x
Comparatively wide pairs with rather faint components. Observation at nearly full moon. Components A & D easy, B relatively well and C & F quite faint. Components E & G not visible. Overall unspectacular under these conditions.
|
|
|
mu Cyg (**)
|
Name: |
mu Cyg, 78 Cyg, STF2822 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
21h44m08.57s / +28°44'33.40" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
4m8 |
6m2 |
1.6" |
321° |
2018 |
|
AD |
4m8 |
6m9 |
196.9" |
44° |
2014 |
|
|
|
|
|
Robert Zebahl |
70mm f/5.7, 128x
AB: At 128x I was able to see this double at least elongated.
|
|
8" f/6, 171x, Bortle 5, NELM 5m7, SQM-L 20.6
AB: Quite well split with noticeable fainter component.
|
|
|
STF 2486 (**)
|
Name: |
STF2486 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
19h12m05.03s / +49°51'20.70" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
6m5 |
6m7 |
7.1" |
204° |
2019 |
|
|
|
|
|
Robert Zebahl |
B 16x70
2020-07-03: Fine split, but very tight with equally bright components.
|
|
70mm f/5.7, 22x, Bortle 6-
At 22x barely split with a slight difference in brightness. At 44x the primary looked orange. I could not determine the color of the companion.
|
|
|
STF 2496 (**)
|
Name: |
STF2496 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
19h15m19.18s / +50°04'16.00" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
6m5 |
10m0 |
2.1" |
81° |
2015 |
|
AC |
6m5 |
11m2 |
186.1" |
242° |
2003 |
|
Robert Zebahl |
152mm f/5.9, 270x, Bortle 6
AB: In steadier moments, the much fainter companion can be seen near the first diffraction ring of the primary component.
|
|
|
STF 2578 (**)
|
Name: |
STF2578 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
19h45m39.65s / +36°05'27.60" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
6m4 |
7m0 |
14.9" |
125° |
2018 |
|
Robert Zebahl |
70mm f/5.7, 22x
At 22x easy with visible brightness and color difference. The slight color difference is even better visible at 44x: A appears white-yellowish, B slightly bluish.
|
|
|
STF 2579 (**)
|
Name: |
STF2579, delta Cyg, 18 Cyg |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
19h44m58.44s / +45°07'50.50" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
2m9 |
6m3 |
2.8" |
218° |
2016 |
|
|
|
|
|
Robert Zebahl |
70mm f/5.7, 200x, Bortle 6-
At 100x only indicated. At 200x the much fainter companion is visible as a slightly elongated brightening on the first diffraction ring.
|
|
|
STF 2605 (**)
|
Name: |
STF2605, psi Cyg, 24 Cyg |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
19h55m37.82s / +52°26'20.50" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
5m0 |
7m5 |
2.8" |
177° |
2014 |
|
Robert Zebahl |
70mm f/5.7, 100x, Bortle 6-
At 80x difficult. At 100x and 133x the fainter component was clearly visible as small, roundish, partly slightly oval brightening.
|
|
|
STF 2666 (**)
|
Name: |
STF2666 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h18m06.99s / +40°43'55.60" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
6m0 |
8m2 |
2.8" |
245° |
2018 |
|
AC |
6m0 |
10m7 |
34.0" |
207° |
2006 |
|
CD |
10m7 |
11m0 |
24.1" |
143° |
2018 |
|
Robert Zebahl |
152mm f/5.9, 129x, Bortle 6, SQM-L 19.6
AB: 2020-06-24: Very nicely separated with clear difference in brightness. The A component appears white-yellowish. The companion was well visible as a tiny star without color.
|
|
|
STF 2671 (**)
|
Name: |
STF2671 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h18m24.76s / +55°23'49.80" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
6m0 |
7m5 |
3.8" |
337° |
2016 |
|
Robert Zebahl |
70mm f/5.7, 57x, Bortle 6-
Pretty tight with a clear difference in brightness. I couldn't see anything conspicuous regarding colors.
|
|
|
STF 2687 (**)
|
Name: |
STF2687 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h26m23.47s / +56°38'19.30" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
6m4 |
8m3 |
26.2" |
118° |
2018 |
|
Robert Zebahl |
B 16x70, Bortle 6, SQM-L 19.2
2020-08-19: Gorgeous sight, separated with distinct brightness difference. Primary component appeared rather white with a greyish companion. With two similarly bright stars to the east and southeast STF 2687 forms a prominent triangle surrounded by several star chains. About 12 arcminutes apart to the southeast of STF 2687 is another pair of stars, which is particularly striking because of its color (bluish & orange).
|
|
|
STF 2691 (**)
|
Name: |
STF2691 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h29m43.18s / +38°07'31.50" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
8m1 |
8m4 |
17.0" |
31° |
2017 |
|
Robert Zebahl |
B 16x70, Bortle 6, SQM-L 19.2
2020-08-19: Nicely separated and in one field of view together with 40 Cygni and Messier 29. Moderate distance and brightness difference, relatively conspicuous even though the environment is rather rich in stars.
|
|
70mm f/5.7, 22x
2020-07-29: At 22x clearly separated with little difference in brightness. Colorwise the components appeared different: yellowish-orange & bluish. The color impression was a bit more intensive at 44x: slightly orange & bluish.
|
|
|
STF 2758 (**)
|
Name: |
STF2758, 61 Cyg |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
21h06m53.95s / +38°44'57.90" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
5m2 |
6m0 |
31.6" |
154° |
2018 |
|
|
|
|
|
Robert Zebahl |
152mm f/5.9, 22x, Bortle 6, SQM-L 19.6
2020-06-24: Beautifully separated, bright, striking, especially the colors: bright orange and orange.
|
|
|
STF 2789 (**)
|
Name: |
STF2789 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
21h19m58.84s / +52°58'44.10" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
7m7 |
7m9 |
6.8" |
115° |
2018 |
|
Robert Zebahl |
70mm f/5.7, 44x, Bortle 6-
At 22x almost separated. The double star appeared strikingly orange and forms a conspicuous, nearly isosceles triangle with neighbouring stars. At 44x clearly separated, relatively close together with a small difference in brightness.
|
|
|
STF 2832 (**)
|
Name: |
STF2832 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
21h49m14.48s / +50°30'54.20" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
7m8 |
8m3 |
13.0" |
213° |
2018 |
|
AC |
7m8 |
11m0 |
45.8" |
321° |
2018 |
|
BC |
8m3 |
11m0 |
51.5" |
335° |
2018 |
|
Robert Zebahl |
B 16x70, Bortle 6, SQM-L 19.2
AB: 2020-08-19: Very nicely separated, slight difference in brightness. No color was visible. Towards northwest is pi 1 Cygni, which is surrounded by several medium bright and fainter stars and together with STF 2832 presents a very attractive view. The region southeast of STF 2832 looks rather poor.
|
|
|
STFA 50 (**)
|
Name: |
STFA50, omicron Cyg, 30/31 Cyg |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h13m37.90s / +46°44'28.80" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AD |
3m9 |
4m8 |
336.7" |
322° |
2016 |
|
AC |
3m9 |
7m0 |
108.6" |
173° |
2016 |
|
Robert Zebahl |
naked eye, Bortle 6+, SQM-L 19.4
AD: Well split with noticeable difference in brightness.
|
|
B 8x40, Bortle 6-, NELM 5m0
AD: Wonderful double star for binoculars. Large distance of the components, brighter once (31 Cyg) appeared slightly orange, the fainter (Cyg 30) more bluish.
|
|
B 8x40, Bortle 7, NELM 5m0, SQM-L 18.6
AC: Observation at full moon. Easily split with big difference in brightness. Brighter component slightly orange. C component rather faint.
|
|
B 16x70
2020-07-03: Fantastic sight. A: bright orange, D: white-bluish, C: light blue. Very beautiful field.
|
|
80mm f/6.25, 25x, Bortle 7, NELM 5m0, SQM-L 18.6
AC: Similar to the observation with binoculars. C component appeared bluish and gave good contrast to the orange colored 31 Cyg.
|
|
102mm f/11, 28x, Bortle 6+, SQM-L 19.4
Bright, wide apart and wonderful contrast in color. A: light yellowish-orange, C: blue, D: light blue.
|
|
|
STT 386 (**)
|
Name: |
STT386 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
19h48m16.51s / +37°09'37.50" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
8m5 |
8m6 |
1.0" |
71° |
2018 |
|
Robert Zebahl |
152mm f/5.9, 270x, Bortle 6-
Clearly visible as a double star with touching diffraction disks. Not difficult.
|
|
|
STT 403 & STF2657 (**)
|
Name: |
STT403 & STF2657, WDS20144+4206 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h14m21.53s / +42°06'15.60" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
STT403 |
AB |
7m3 |
7m6 |
1.0" |
171° |
2016 |
STF2657 |
AC |
7m3 |
9m8 |
11.6" |
32° |
2015 |
|
Robert Zebahl |
152mm f/5.9, 270x, Bortle 6
STT403 (AB): At 129x clearly elongated, notched. At 270x clearly split, but very tight with almost touching diffraction disks. Visible, but very small difference in brightness. Inconspicuous color.
|
|
|
STT 410 (**)
|
Name: |
STT410 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h39m33.31s / +40°34'46.80" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
6m7 |
6m8 |
0.9" |
3° |
2018 |
|
AB-C |
6m8 |
8m7 |
68.6" |
70° |
2018 |
|
AB-D |
6m8 |
10m0 |
106.6" |
327° |
2018 |
|
|
|
|
|
Robert Zebahl |
152mm f/5.9, 270x, Bortle 6-
All four components easily visible. The pair AB shows two clear, equally bright, overlapping diffraction disks.
|
|
|
STT 413 (**)
|
Name: |
STT413, 54 Cyg, lambda Cyg |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
20h47m24.53s / +36°29'26.70" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
4m7 |
6m3 |
0.9" |
3° |
2018 |
|
|
|
|
|
Robert Zebahl |
102mm f/11, 280x, Bortle 6, SQM-L 19.4
The diffraction disk of the primary component was slightly elongated towards north. The air here was however a bit too unsteady for an accurate observation.
|
|
152mm f/5.9, 300x, Bortle 6, SQM-L 19.3
Observation with an achromat. The fainter component was visible as a permanent brightening of the first diffraction ring.
|
|
152mm f/8, 300x, Bortle 6-
2020-08-24: Observation with an ED refractor. At 171x partially, at 200x clearly visible as '8'. At 300x two clear, overlapping diffraction disks of differently bright components.
|
|
|
STT 426 (**)
|
Name: |
STT426, 60 Cyg |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
21h01m10.93s / +46°09'20.80" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
5m4 |
9m5 |
2.9" |
159° |
2017 |
|
Robert Zebahl |
152mm f/5.9, 129x, Bortle 6
Much fainter companion outside of first diffraction ring. Better visible at 270x.
|
|
|
STT 437 (**)
|
Name: |
STT437 |
Type: |
** |
Constellation: |
Cyg |
Coordinates: |
21h20m50.12s / +32°27'10.20" |
Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
7m2 |
7m4 |
2.4" |
19° |
2018 |
|
|
|
|
|
Robert Zebahl |
70mm f/5.7, 57x, Bortle 6-
At 57x separated, but close together. Near, slightly brighter star in nice contrast. The double star shows a distinct orange coloration. At 100x small difference in brightness visible.
|
|
|