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Scroll down for older images (last update: 04/18/2008

M101
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0bject

M101 Spiral Galaxy in Ursa Major
Date April 4 & 5, 2008
Exposure LRGB 90:15:15:15 (unbinned)
Camera STL11000M with Astronomik filters
Telescope Takahashi FSQ 106N @ f/5 on Losmandy G11 w/Gemini
Guiding External guide head with E-finder
Processing MaximDL,  PhotoshopCS3, GradientXterminator
Comments Clear and cool

Click on image for full resolution version

0bject

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

                                    All text and images © Gregg L. Ruppel 1998-2008.