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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 |