M81, Spiral Galaxy in Ursa Major

copyright Robert Gendler 2006

To read about M81 click here

click on image or desired viewing size      1200 X 812   1600 X 1082   2000 X 1353   Portrait Format Click Here

Total Exposure 20 Hours

11 Hours Luminance

9 Hours RGB

 

 

Image acquired at the Nighthawk Observatory

Image data acquired remotely using CCDAutoPilot2

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

Software Bisque Paramount ME, SBIG STL-11000XM

 

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