Sunday, August 29, 2010

NGC281 in Cassiopeia

This is a test photo of the Pac Man nebula in Cassiopeia, as captured with the 106mm, f/3.6 telescope in only 10 minutes: R=3 min, G=3 min, B=4min. This photo is the first light of the scope with the reducer. The camera was an old SBIG ST-7XME NABG with a small but sensitive chip. This scope screams for a larger chip! Note, the composite above is only a pure RGB without any portion of Ha. The camera shows much noise at this low temperature of -15°C. A water cooling would be very helpful especially in the summer.

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