Object: Horse Head Nebula B33 Date: 26.10.08 Location: Oberes Schlierental 1450m ü. M. SQM: 21.60m/s2 at 22.20UTC by 2°C Telescope: Astrooptik Keller Cassegrain 400mm f/9 Mount: ALT-7 Autoguiding: Second chip in SBIG STL-11000M Camera: SBIG STL-11000M Luminance / Canon EOS 20Da RGB Dark Frame: -20°C Exposure: 3x600s, total 30minutes Luminance and 75min RGB |
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