Pferdekopfnebel B33 bei 400mm f/3 mit STL-11000
Object: Horse Head Nebula B33
Date: 01.02.11
Location: Oberes Schlierental 1450m ü. M.
SQM: 21.73m/s2 at 22:30UTC by -3°C
Telescope: Astrooptik Keller Cassegrain 400mm f/3
Mount: ALT-7
Autoguiding: Second chip in SBIG STL-11000M
Camera: SBIG STL-11000M
Filter: Luminance
Dark Frame: -30°C
Exposure: 4xL600s, 3xR600s, 3xG600s, 3xB600s, total 130minutes
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