NGC 891 - Spiral Galaxy type Sb, in Andromeda
The seing was terrible. According Pickering scale it was rating 3 or even 2 - Poor to Very Poor. The movie of Albireo, Cygni, taken the same night shows why the stars looks like pancakes and resolution is so bad 
Details
Spiral Galaxy NGC 891 (GC 527, h 218, H 5. 19), type Sb, in Andromeda
Discovered by William Herschel in 1784.
| Right Ascension |
02 : 22.6 (h:m) |
| Declination |
+42 : 21 (deg:m) |
| Distance |
10 000 (Kly) |
| Visual Brightness |
10 (mag) |
| Apparent Dimension |
13.5 x 2.8 (arc min) |
| Seeing: |
Poor to Very Poor - Pickering 3 rating |
| Optic(s): |
Celestron 11" Schmidt Cassegrain @ f/10 |
| Mount: |
CGE equatorial |
| Camera: |
Artemis Art 4021 - monochrome cooled CCD camera – 2048 x 2048 px ; 16x16 mm; 7.4 µm x 7.4 µm |
| Filters: |
Astronomics LRGB Set, SupaSlim TrueTechnology Computerized Filter Wheel |
| Dates/Times: |
2009-11-22 and 2009-11-23 |
| Location: |
Falkovets, BG, longitude: E 22 46' 50", latitude: N 43 35' 51" |
| Exposure Details: |
LRGB: L (IR cut): 45x1.5 min (1x1 binning), R, G and B: 10x1.5 min each of colours (1x1 binning), Total ExposureTime - 112.5 min |
| More details: |
50 Dark frames calibrated |
| Guiding: |
None |
| Processing: |
MaxIm DL / PSCS2 |
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