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Size: 14.3 x 2.4 arcmin Magnitude: 10.8 (SB 14.6) RA: 02h 22m 33.4s Dec: 42 d 21m 03s |
NGC
891 is also in the constellation of Andromeda. It is about 18 degrees
east of M-31 and 4 degrees west of the open cluster M-34. You
will probably need at least an 8-inch scope to see it visually, but it
may be possible in a 6-inch if you have very dark skies. Visually,
it will be just a fuzzy patch of light, which is the central core area.
The surface brightness (14.6) is just too dim to see visually in anything
except the largest amateur scopes. The brighter core region is relatively
easy to image, but the outer regions of the arms are very difficult and almost
beyond my 8".
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Scope: 8" LX 200 SCT | |
M-5C CCD Camera & STAR 2000 | |
Focal Ratio: f3.3 | |
Exposure: 50 min | |
Scope: 8" LX 200 SCT | |
M-5C CCD Camera | |
Focal Ratio: f4 | |
Exposure: 26 min | |
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Scope: 8" LX 200 SCT |
M-5C CCD Camera & STAR 2000 Auto tracker | |
Focal Ratio: f10 | |
Exposure: Mosaic of two 1 hour Exposures | |
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