[Camelopardalis (Dunk)]

Originally Posted by multiweb

I'm jealous mate. You've got heaps of contrast in there. I'm gonna repro mine and try that DBE (hasta la vista gradients) thingy too.

Thanks Marc - between the two of us we must have some decent data you're welcome to add it to your subs, although it's only DSLR data

Originally Posted by Brisbaneskys

Nice Image. Here something you can try when using DBE. Make a clone of the image, then over stretch the clone image to see the gradient better. This will allow you to plot your point, more accurately. create a process icon then activate your main image. For the correction select "Division", this will flatten the image, also remove the color cast. Now select "subtraction" to remove/reduce the gradient. Subtraction can be used several time without degrading the image.
DBE is not a replacement for flats and won't get rid of imperfections like dust mots etc. But it does a pretty good job with gradients.

Thanks Robin - I'll give it a try! It's quite a complex gradient, as Andromeda was scraping along the northern horizon, so it's the right hand side of the image that is the worst.

Makes me wonder if there is a way to remove the gradient in preprocessing I might be able to get away with rescuing a few more subs from the junk pile then.