Thanks all. I am going to give this region of Orion the same treatment as this image
http://members.optusnet.com.au/~fmlee/lmchdr_col+nb.jpg
From this thread
http://www.iceinspace.com.au/forum/s...ad.php?t=37160
Some of the details are here as well. I just thought I would put up this preliminary data as I was shocked how much faint stuff now appears and it is all due to the fridge. The faint stuff is at or lower than the noise in a Canon sensor at 20C. So no matter how many subs you collect at 20C there still will be lots of 'holes' in the data due to the noise subtraction.
Bert