Main problem is noise in the image. I'm trying to calibrate using dark flats. I've also tried using traditional darks and bias on a couple of other images, but using just dark flats worked all right on this image (which is far from perfect, but I think a successful "first" outing with the camera).
There are some known issues I've got to deal with - mainly that these images are from the same stack of 74 2-min exposures (gain 100, offset 10, temp -10C) taken with AT72EDII at f/6, Bortle 6 skies using an L-pro filter. I know I probably need twice as much integration time. I'm dithering while capturing, and in post tried two different methods to try to handle the noise.
Image 1 (see below) - dithering only, used multi scale linear transform before stretching, TGVDenoise after, and it's *okay*, but still noisier than I expected.
Image 2 (see below) - dithering, and I used drizzle integration in post as well as same denoising routines as in the first. Here to my surprise I get the appearance of "hot" pixels (bright blue, red, green dots) that I thought this method would eliminate.
Also - have tried a couple emission/reflection nebula and...well. Images are noisier than I can handle in post.
Is this really just a question of integration time, and if so, how much *should* I be shooting for? I wasn't necessarily expecting a free lunch, but these are approaching DSLR levels of noise. So any advice regarding settings, integration/exposure time, etc., would be greatly appreciated!