Tonight - decided I'd better get on the sky and get some pics of Comet 17P/Holmes before it disappears back into the depths of space for another 115 years (last time it had an outburst). So - Here they be. Shot with a Canon EOS 1D Mark IIN on a Takahashi EM200 Mount | ISO 400 | 800mm lens at F/7.1 - sum of five 3 minute exposures.
A negative view of the same image showing low contrast detail.
Below - same mount - Canon 5D | 300mm F/5.6 lens | ISO 400 | sum of five 2 minute exposures.