NGC 891:
9/7-8/2007 11:14 AM Latitude: 43° 48.407′ North Longitude: 122° 43.528′ West 3252’. June Mountain 22 miles South of Dexter. OR. Seeing: E Transparency: 7 Bortle: 2 SQM: 21.91 . Telescopes / Optics: TEC 140 f/7 prime focus 980mm . Mount : AstroPhysics 1200 GTO. Camera: SBIG ST8XME CFW8) 4½ hours-25°c. FOV: 48’ x 32’ Filter: LRGB Astrodon e series. Information: One of my longest images with lots of data and great signal to noise; ( L-5 min. x 16; L-10 min. x13; RGB- 5 min. x 4ea.) Lots of detail and background galaxies. See next page for a cropped FOV of NGC 891
NGC 891 Edge on Spiral (HV19) Caldwell 23
NGC 891 is a great Edge on Galaxy in the constellation of Andromeda. This Galaxy is 30 million light years from earth. It shines at apparent magnitude 10.8 and 120 thousand light years across. At 13.5′ x 2.5 arc-minutes, it shows up nicely in medium to large amateur telescopes.
This Edge on Spiral galaxy’s dust lanes are prominent and show nice detail in long exposures. The dust lanes are similar to out own Milky Way if observed from the same distance edge on. On a clear summer night, the dark rift from Cygnus down to Sagittarius is now given a different perspective.
William Herschel discovered NGC 891 on October 6, 1784, this galaxy is a member of the NGC 1023 group of galaxies
The TV Show” Outer Limits” featured NGC 891 Galaxy during the end credits. This famous show also featured the Andromeda Galaxy, M67 Galaxy, M67, the Sombrero Galaxy (M104) and Pinwheel Galaxy M101).