Object: Elephant's Trunk vdB142 Date: 10.09.10 Location: Oberes Schlierental 1450m ü. M. SQM: 21.50m/s2 at 00:20UTC by 7°C Telescope: Astrooptik Keller Cassegrain 400mm f/9 Mount: ALT-7 Autoguiding: Second chip in SBIG STL-11000M Camera: SBIG STL-11000M Filter: LRGB Dark Frame: -30°C Exposure: L1800s, 6xR900s, 5xG900s, 5xB900s,total 270minutes

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