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NGC 891 is a fine edge-on spiral with a faint dust lane along its equator. It was discovered by William Herschel on October 6, 1784, and cataloged. However, in the appendix to his first catalog, he confused it with M110 when discussing the discoveries of his sister Caroline Herschel.
NGC 891 is a member of a small group of galaxies, sometimes called the NGC 1023 group.
NGC 891 is a small galaxy in Andromeda, positioned at about 4 degrees east of gamma Andromedae. The galaxy is being edge-on with clearly distinguished dust-lane in large telescopes. NGC 891 has a length of 13-arc minutes and visual magnitude of about 10, it's fairly hard to detect its spindle shape with naked eyes.
The galaxy can hardly be paid attention because the constellation has a representative object of The Andromeda galaxy (M31) in autumn skies.
Image taken with a Canon EOS 20Da camera in prime focus of a professional reflector-telescope at 1290mm f/5.1. Exposure time is 75 minutes !
This is a very deep and real image, so the "noise" in background is no noise, these are very very dim stars again. The image is not overprocessed and sharp. See the spikes on the very bright stars.