Messier 101
03/04/2014

M101 is a textbook example of the grand design spiral type galaxy, and is the third largest galaxy in the Messier catalog. Face on at a distance of 22 million light years it is a challenging astrophotography target due to it's low surface brightness.


This galaxy was not discovered by Messier, but by Pierre Mechain in late March of 1781 just before the final version of Messier's catalog was to go to print (source "Atlas of the Messier Objects").


Image Details


Camera: Starlight Xpress Trius-694
Optic: Veloce RH-200
Exposure: 11x10min Luminance, 8x10 Red, 6x10 Green and Blue.
Mount: Paramount MX
Date: March 1, 2014
Other: Imaged from the Winter Star Party


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Messier 101