Date/Time | : | 2003-07-10T02:48:00Z ± T05M --TO-- 2003-07-10T03:40:00Z ± T05M |
Observer | : | Peter C. Chapin |
Equipment | : | |
Location | : |
My plan for the evening was to observe doubles in western Cyg and to catch up on X Cyg and W Her.
Object | ADS-12169 |
Type | star/multiple |
Position | RA=19h10.8m, DEC=+49d46m (B1950.0) |
Constellation | Cyg |
Magnitudes | A=6.84 B=6.62 |
Separations | AB=8.7" |
NOTES
This double was a little tricky to find because it is somewhat far from any good landmarks. I found it easiest to locate by working from the "wing" of Cyg.
The double was easily split with the 25mm eyepiece although the components were rather close at that low magnification. The components were about equal brightness and with much glare. The view with the 18mm eyepiece was particularly satisfying. Nice pair.
Object | ADS-12815 |
Name | 16 Cyg |
Type | star/multiple |
Position | RA=19h40.5m, DEC=+50d24m (B1950.0) |
Constellation | Cyg |
Magnitudes | A=6.26 B=6.37 |
Separations | AB=39.0" |
NOTES
This double was nearby ADS-12169. It was very wide and easy. In fact, the double was so wide and the star background was so rich that the pair did not seem all that interesting. I noticed that the double was resolvable in the finder 'scope at 8x.
The variable R Cyg is near this double and I noticed that it seemed near maximum tonight.
Object | ADS-12880 |
Name | δ Cyg |
Type | star/multiple |
Constellation | Cyg |
Magnitudes | A=3.0 B=6.5 |
Separations | AB=2.1" (246 degrees) |
NOTES
I was unable to resolve this double due, no doubt, to the brightness of the primary. I tried all my eyepieces from the 25mm to the 9mm without any conclusive sighting of the secondary. However I did see a possible glimpse of the secondary at a position angle of around 250 degrees. After coming in from outside I checked my catalog information and found that the actual position angle is quite close to what I was seeing. However, despite that, I can't honestly say that I observed the secondary for sure. The view I got was too inferior.
Seeing tonight was decent, but not wonderful. It might be good to check this double again under conditions of excellent seeing.
Object | ADS-12893 |
Type | star/multiple |
Position | RA=19h43.8m, DEC=+35d58m (B1950.0) |
Constellation | Cyg |
Magnitudes | A=6.50 B=7.10 |
Separations | AB=15.1" |
NOTES
Easily resolved with the 25mm eyepiece. The difference in brightness between the components is noticeable but not extreme. The field of view was interesting. It had a lot of faint and mediumly bright stars without being overwhelming. This was a satisfying double.
Object | ADS-12900 |
Type | star/multiple |
Position | RA=19h44.0m, DEC=+34d53m (B1950.0) |
Constellation | Cyg |
Magnitudes | A=6.23 B=8.4 |
Separations | AB=38" |
NOTES
This double was quite wide. The secondary is significantly fainter than the primary. The field is rich and that, together with the wide separation, makes this double relatively uninteresting.
Object | ADS-12913 |
Name | 17 Cyg |
Type | star/multiple |
Constellation | Cyg |
Magnitudes | A=5.03 B=8.5 |
Separations | AB=25.9" |
NOTES
Although this double was also widely separated I found it much more interesting than ADS-12900. The primary seemed bright in the 25mm eyepiece with a significantly fainter secondary. It was easily resolved, however. The field was very rich and interesting.