Hi All. Here's last nights effort, which was actually the first time out in months. Crazy weird perth weather!
Anyhoo it's NGC 253 8 x 360s @iso 400 calibrated with DSS and processed in Nebulosity. Still need to wrap my head around processing, but boy am I happy with 6 min subs
Critique and tips welcomed!
Cheers!
Chris
Looks like you've got nice data, I reckon you could do a bit more stretching in Nebulosity using Levels/power stretch, you'll be able to bring out a lot more in your picture.
Thanks for the encouragement and tip, Jo.
I'll give it another whack and see what happens. Your version is definitely better
Cheers, Rick. I only just purchased Nebulosity last night, so for the moment it's just been blindly clicking and sliding things which I'm not entirely sure what they do I've been going over all my old stacked pics so there's loads of practice.
Such a big step up from using Gimp, and a joy to be using 16 bit!
Okay so here's a newer version after taking Jo's advice and running "Levels/power stretch" over it again. Much better I think
Nebulosity is a great program, however it's killing my laptop. Upgrading to Win 7 64bit and shoving more ram in I reckon!
Chris, your repo looks very nice, When stretching I generally move the bottom slider about 30% to the left, hit DONE, open up levels/power stretch again (command L on a mac) and move the top B slider to the right as far as I can without cutting the mountain in the histogram too much. I do this around 5 to 10 times, slowly bringing out the data on each pass. Once I'm happy I hit command A (background colour offset) which fixes any colour cast I might have, and then maybe a bit of star tightening ( command T).
I then like to save as a Bmp and tweak the colours and saturation in my favourite photo editing program.
Remember to save after each adjustment, I generally number the saved images, starting with 1 for the initial stack and then progressing onwards until your done and you can give the final image a proper name.
I've been going over all my old stacked pics so there's loads of practice. 
