On edge galaxy NGC891
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.
Photo Details
Telescope: Celestron C8N (1000mm)
Camera: Sbig ST-2000XM, Sbig Filter wheel, Baader 1.25" LRGB filters
Mount: NJP Takahashi
Guiding: Self-guided
Exposure: LRGB 7h
When: Fall 2010
Other information: good transparency, good seeing