M101 Spiral Galaxy in Ursa Major

copyright Robert Gendler 2007

To read about M101 click here

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Composite LRGB image, Total Exposure 43 Hours

12" and 20" RC and STL11000



Image acquired at the Nighthawk Observatory

Image data acquired remotely using CCDAutoPilot2

RCOS 20RC and 12.5" f/8 Carbon Truss Ritchey-Chrétiens with RCOS Field Flattener / Corrector.

Software Bisque Paramount ME, SBIG STL-11000XM