M101

Date: 2008/03/29 Place: Ondrejov, mhv~5.5 Lens: SV80S + TV0.8x - D=80mm at f/4.8 Exposition: Canon EOS350, 400ISO, 12x8 minutes Mount: Losmandy G8, Atik 16IC + 80/480mm Image processing: dark frame + flat field subtraction, curves in PixInsight LE