Object: Virgo Galaxies Cluster Date: 11.03.2007 Location: Oberes Schlierental 1450m ü. M. SQM: 21.59m/s2 at 23.59UTC 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 Flat Frame: Master-Flat Exposure: 31 x 5.03minutes, total 136minutes

Object: M104 Date: 11.03.2007 Location: Oberes Schlierental 1450m ü. M. SQM: 21.59m/s2 at 23.59UTC 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 Flat Frame: Master-Flat Exposure: 8minutes + 4 x 5minutes, total 28minutes

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