Whirlpool Galaxy (M 81 and M 82), December 27, 2010
Messier 81, magnitude: 6.90.
Messier 82, magnitude: 8.4.

Name: Messier 81 and M82
Camera: Nikon D700 (unmodified), prime focus, IDAS LPS filter
Telescope: Astro-Tech 8” f4.0 Imaging Newtonian, SSAG w/DIY hi-rise adapter
Mount: Atlas EQ-G
Temperature: 25*F, Wind: 0, humidity: 53%; non-condensing; thin high cloud cover
Shutter Speed: 480 seconds
ISO: 1600
Lights: 9
Darks: 0
ImagesPlus 3.82a, Nikon Capture NX2

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