M81

M81 - Spiral Galaxy in Ursa Major

by Bob and Janice Fera

Officina Stellare RC-360AST 14" f/8 Ritchey Chretien Cassegrain
with single-element Riccardi field flattener

Apogee Alta U16M CCD Camera

Astrodon Filters

LRGB Composite - 180:90:90:90 minutes

L:9x20m R:6x15m G:6x15m B:6x15m

Image acquired with CCDAutopilot

Processed in CCDstack and Adobe Photoshop

Taken February 2,4,6, 2011 from Eagle Ridge Observatory, Foresthill, CA

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