Scroll down for older images (last update: 10/26/2014


Full resolution crop


M101 Spiral Galaxy in Ursa Major
Date May12-17, 2012
Exposure LHαRGB 505:120:120:120:120 (16.4 hours, unbinned)
Camera STL11000M with Astrodon Gen II filters (water assisted cooling)
Telescope ASA 10N f/3.6 on AP 900GTO CPO3
Guiding External guide head with MiniBorg 50 mm
Processing MaximDL,  PhotoshopCS5, GradientXterminator, AstroActions
Comments Mild temps with good seeing X 3 nights; acquire with CCD Commander

Click on image for full resolution version


M101 Spiral Galaxy in Ursa Major
Date 3/29 and 4/1/2006
Exposure HaLRGB 90:165:25:25:25 (RGB binned 2x2)
Camera ST2000XM w/SBIG filters (Custom Scientific Hα)
Telescope Celestron C8 @ f/6.7 on Losmandy G11 w/Gemini
Guiding Self-guided ST237
Processing MaximDL, FITS Liberator, PhotoshopCS
Comments Moderate seeing both nights