Stu, Peter,
I had a go at it tonight.
This one is in a very nice spot, almost zenith at twilight end.
Even though I had pretty good seeing it was a warmish night
and the ccd cooling was very noisy for some unknown reason.
So I did a set cooled and uncooled.
Here is the uncooled, north at top, ambient got down to 16
but uncooled CCD was 23.0C grrrr
Well done guys!
Steve