NGC 891 (also known as Caldwell 23) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus. (wikipedia)
Here's only color channels binned 2*2. This was a morning target for few of my imaging sessions so there's no luminance channel, yet. If the weather some day clears I've planned to continue with this one.
Only 2 hr 12 min of rgb here (42:60:30 bin2*2 all).
This was a lovely blog ppost
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