M101 Spiral Galaxy in Ursa Major

copyright Robert Gendler 2006

To read about M101 click here

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2400 X 1574

Composite LRGB image, Total Exposure 37 Hours

Color acquired with 12.5" RC, 15 Hours

Luminance acquired with 12" and 20" RC, 22 Hours



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