M 101


object(s) galaxy M 101
constellation Ursa Major, the great bear
equipment ASA Astrograph 10" at f/2,8, Astro modified Canon EOS 40D
exposure 36 x 300 sec Light at 800 ASA unguided
date Mar 07 2010, Engelhardsberg Germany
conditions stars to 5m5
image processing DeepSkyStacker 3.3.2, Photoshop CS4, PixInsight 1.5
remarks the firewheel galaxy