0bject | Sh2-274 Medusa planetary nebula in Gemini (aka Abell 21, PK 205+14.1) |
Date | January 30 - February 11, 2012 |
Exposure | HαLRGB 480:15:15:15:15 (cropped; R = Hα/Red 60/40) |
Camera | STL11000M with AstroDon Gen II filters |
Telescope | ASA 10N f/3.7 on AP900GTO CP3 |
Guiding | External guide head with 50mm MiniBorg |
Processing | MaximDL, Photoshop CS5, GradientXterminator, AstroActions |
Comments | Cold; Hα collected during waxing moon; NGC 2395 at upper right; acquired w/CCD Commander |