Object: Galaxy NGC7331 Date: 29.08.08 Location: Oberes Schlierental 1450m ü. M. SQM: 21.48m/s2 at 23.40UTC Telescope: Astrooptik Keller Cassegrain 400mm f/9 Mount: ALT-7 Autoguiding: Second chip in SBIG ST-2000XCM Camera: SBIG ST-2000XCM Dark Frame: -10°C Exposure: 17 x 300s, total 85minutes |
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