by Barry Etter
Date: 3/5/2010
Target: M51 - The Whirlpool Galaxy
Telescope: Orion 8" f/4.9 w/Multi-Purpose Coma Corrector
Camera: Canon 40D (modified)
Filter: None
Exposures: 36x300s (3.0h) @ ISO800
Framing: North is up, 60% Crop
Start Temp: 27F
End Temp: 23F
Location: Mocksville, NC
Seeing: 3/5
Transparency: 3/5
Guiding (RMS/Osc): 36/0.18
FWHM (Median): 3.93"
Start Time: 11:00PM
End Time: 2:00AM
Captured and Normalized with Nebulosity, stacked using DeepSkyStacker, processed in Photoshop.