NGC 6791

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object NGC 6791
constellation Lyra
equipment ASA Astrograph 10" at f/2,8, Astro modified Canon EOS 40D
exposure 12 x 300 sec at 800 ASA unguided
date Jun 11, 2010 Engelhardsberg Germany
conditions stars to 5m0
image processing DeepSkyStacker 3.3.2, Photoshop CS4, PixInsight 1.6
remarks NGC 6791 is a small open cluster, its major axis is about 16 arcminutes, it contains about 300 stars