Taken 12-Aug-12
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Butterfly to Crescent

This is a shot of the Butterfly (top left) and the Crescent (bottom right) nebulae in Cygnus. The goal was to create a false color image (H-alpha + O-III) but clouds rolled in before I managed to take decent O-III data. As a result, I'm going to consider this unfinished.

Technical details:
Date: Aug. 11-12, 2012
Time: 10:30pm - 1am
Camera: SBIG STF-8300M
CCD Temperature: -5C
Lens: Canon 200mm f/2.8 stopped down to 55mm
Filter: Astrodon 5nm H-alpha
Light frames: 6x15 min
Dark frames: none
Flat frames: ~20
Binning: 2x2
Guiding: Orion SSAG @ 80/400mm Orion Short tube
Mount: Losmandy GM-8
Dithering: Manual
Processing: Stacking in DeepSkyStacker, Curves and Levels PSCS5.

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Butterfly to Crescent