I have been wanting to do some dark nebula imaging for a while, but had read about how difficult processing would be for such images so I held off for a while until I had the means to do longer subs. Now that I have an autoguider my sub length is sufficient so I had a go at NGC 7023, also known as the Iris Nebula. These were imaged using a borrowed Newtonian astrograph from a dark sky location.
LRGB image integration time is: 234:60:60:60
Calibrated and stacked in Maxim DL and Processed using Annie's Astro Action in Photoshop CS2
Processing did take a bit more work than normal LRGB images, but using multiple layers I was able to get some good depth in the dust and was able to pull out some nice color (at least in my opinion)
I am very happy with how it turned out and am looking forward to doing some more dark nebulous areas in the future.
For now, I am moving on to a multi-night narrowband project . . . more to come soon