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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