Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a spiral galaxy about 12 million light-years away in the constellation Ursa Major. M81 is about 95,000 light years across, just a little smaller than the Milky Way galaxy at 100,000 light years across.
Taken: Feb. 20, 2012
Telescope: AT8RC at f/8 (0.68 arcsec/pixel) - FOV 28.6 x 37.9 arcmin
Mount: G11 w/ Gemini II
Camera: SBIG ST8300M @ -25C
Filter(s):
IDAS LPS-P2-48
Luminance 13 x 5min. bin 1x1
Red 6 x 5min. bin 1x1
Green 6 x 5 min. bin 1x1
Blue 6 x 5 min. bin 1x1
Exposure Time: 2 hours & 35 minutes
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