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M17 Emission Nebula (Swan, Omega) in Sagittarius
Date July 12-31, 2009
Exposure HαHαOIIISII 120:120:120:195 (left)   HαSIIHαOIII 120:195:120:120 (right) (Hα for luminance for both images)
Camera STL11000M with Baader narrow band filters
Telescope ASA 10N astrograph f/3.7 on Losmandy G11 w/Gemini
Guiding Remote guide head with E-finder
Processing MaximDL, Photoshop CS3, GradientXterminator
Comments Taken over 4 evenings with good seeing most nights