M101

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M101 - Spiral Galaxy in Ursa Major

by Bob and Janice Fera

A&M RC-360AST 14" f/8 Ritchey Chretien Cassegrain

Yankee Robotics Trifid-2 6303E CCD Camera

Astrodon Filters

3-pane Mosaic - LRGB Composite

27 hour total exposure

Sub-exposures: 20 minutes each, RGB binned 2x2

Image acquired with CCDAutopilot

Processed in CCDstack, PixInsight LE, Registar and Adobe Photoshop

Taken April 24, 30, May 1, 3, 5, 7-10, 2008 from Eagle Ridge Observatory, Foresthill, CA