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M33- Spiral Galaxy in Triangulum

by Bob and Janice Fera

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

SBIG STL11000M CCD Camera

Astrodon Filters

3-pane Mosaic - 22.5 Hour Total Exposure

Each frame: L:9x20m R:6x15m G:6x15m B:6x15m
RGB exposures binned 2x2

Image acquired with CCDAutopilot

Processed in CCDstack, PixInsight LE and Adobe Photoshop

Taken September 16-23, 2009 from Eagle Ridge Observatory, Foresthill, CA


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