Object: Soab Bubble Date: 18.11.09 Location: Oberes Schlierental 1450m ü. M. SQM: 21.50m/s2 at 22:30UTC Telescope: Astrooptik Keller Cassegrain 400mm f/9 Mount: ALT-7 Autoguiding: Second chip in SBIG STL-11000M Camera: SBIG STL-11000M Filter: H-alpha Dark Frame: -30°C Exposure: 1800s (only one frame)

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