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Almost there Eddie, the sky background is still black, it really should be grey to avoid people like me saying "you've clipped the black level". The nebulosity is nice and velvety though.
If I had a similar image I'd post it to show you what I mean, but I haven't (and aren't likely to in the near future by the looks of the weather report).
Don't worry about a bit of noise in the sky area around the nebula, it's normal and expected, they don't just start and stop like this.
Get a hold of the book(s) (he has another as well that's pretty good), cheapest thing you'll buy for astroimaging, pops up now and again on Astromart cheap. Also Adam Block has done a tutorial DVD on the use of CCDStack, I don't have it yet, but will shortly (thanks Ruddy, got my $900 yesterday), aparently it's the Ducks Nuts when it comes to image processing.
Don't reinvent the wheel, someones already done most of the hard work for you.
Cheers
Stuart
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