Playing about at my dark sky site last night, I managed to get 4 decent 10 minute subs @ iso1600 before the dew took over. The dew was so severe both the mirrors on my 25" Dob also dewed up! I've spent all day drying everything off.
Apologies for the poor polar alignment - it was a 5 minute job with the polar finder and I completely forgot to drift align, I was so keen to get going.
Processing is limited to stacking in DSS and a bit of a fiddle in ViewNX to stretch the image.
High res version here.
http://astrobin.com/14711/
I think this camera can be pushed a lot harder - there's still no sign of excessive noise at asa 1600.
Constructive comment/critique welcomed.
Andrew.