Object: Hubbles Variable Nebula NGC2261 Date: 25.01.09 Location: Oberes Schlierental 1450m ü. M. SQM: 21.28m/s2 at 21:35UTC by -8°C 21.34m/s2 at 23:05UTC by -9°C Telescope: Astrooptik Keller Cassegrain 400mm f/9 Mount: ALT-7 Autoguiding: Second chip in SBIG STL-11000M Camera: SBIG STL-11000M Filter: Luminance, Red, Green, Blue Dark Frame: -30°C Exposure: 9x600s Luminance, every 2x600s RGB, total 150minutes

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