Image information: Stacked, dark-subtracted, registered combination of 30 x 10s unfiltered images. Image taken 09/03/2007 23:10 UT.
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| Description: M81 is a bright galaxy in Ursa Major. It is the brightest of a group of large galaxies in the region. As the galaxy is rather larger than our camera's field of view, the spiral structure isn't clearly visible, althuogh a spiral arm can be made out on the left-hand side.
Image information: Stacked, dark-subtracted, registered combination of 30 x 10s unfiltered images. Image taken 09/03/2007 23:10 UT. |
Physical information: Magnitude: 7.8, size: 24.9'x11.5', p.a. 157 degrees, classification: Sb, aka NGC3031 or Bode's Nebula.