David acquired this data two months ago while testing a new power source for the obs. He only managed to shoot 9 frames - 5 x 6mins and 4 10 mins before the clouds rolled in
He then forgot about the data until this week and stacked the light frames with darks which I have processed in the past couple of days.
Celestron C9.25 using 6.3 focal reducer
Canon 40D unmodded
Larger size .
http://www.pbase.com/rangeviewobserv...45523/original