Galaxie NGC891
Object: Galaxy NGC891
Date: 13.09.07
Location: Oberes Schlierental 1450m ü. M.
SQM: 21.51m/s2 at 23.17UTC by 8°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 6°C
Flat Frame: Master-Flat at 0°USZ with Paracorr
Exposure: 13 x 362s, total 78minutes
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