I seem to be hopeless with image processing. I have Photoshop and Nebulosity, and DSS. I stack with DSS, always with dark frames and offset/bias frames (rarely use flats). I shoot exclusively at ISO800, with a Canon 450D DSLR. My scope is a 10" light weight imaging newt with guidescope. I use Metaguide to manage my ASI120MM guidecamera. It sits on a NEQ6 on a pier in my observatory. My sub times are usually between three and five minutes, and they always look great on the camera screen or on BYEOS.
My problem emerges when I move into Photoshop or Nebulosity. My stacked images generally look like S*** when opened in these apps. I have done plenty of reading and research but never seem to achieve the results I see displayed in posts here.
What am I doing wrong? Why does a stacked image look not much better than a single sub?
I have uploaded a FIT file to Astrobin (M83). Can someone have a go at processing this and give me some feedback? The file was made up of 22 subs of 4 min 35 sec each, with darks and offset/bias (no flats).
So here is the Astrobin public area posted jpeg in my sharing folder:
http://www.astrobin.com/166527/
And here is the link to the FIT file in Astrobin:
http://www.astrobin.com/rawdata/priv...redfolders/59/
I think you need to be a member of Astrobin to access that file, but if I am wrong can someone tell me how to share that file.
Thanks to anyone that tries to sort this out.
