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M101 - Spiral Galaxy in Ursa Major
by Bob and Janice Fera
Officina Stellare 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