Object: Galaxies NGC4038/39 Date: 20.04.2007 Location: Oberes Schlierental 1450m ü. M. SQM: 21.25m/s2 at 21.05UTC by 7°C 21.49m/s2 at 21.30UTC by 4°C 21.67m/s2 at 22.20UTC by 3°C 21.81m/s2 at 22.56UTC by 2°C 21.86m/s2 at 23.25UTC by 2°C Telescope: Meade Schmidt-Newton 254mm f/4 Mount: ALT-7 Autoguiding: SBIG STV Camera: Canon EOS 20Da ISO speed: 1600 Dark Frame: Master-Dark at 5°C and 3°C Flat Frame: Master-Flat at 0°USZ Exposure: 18 x 5min + 6 x 6min, total 126minutes |
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