Quote:
Originally Posted by rmuhlack
okay, so now i've compared the full frame shot with naskies 'sky survey' image, and maybe i was a little hasty to call "amp glow"   
here's one example of the red glow i was referring to - with NGC253 as the example. normally i would run DBE hard to get rid of this, so for this example i went back to the unedited stacked image and just applied a stock DBE and histogram stretch only. This was with 4 minute subs in cold weather. |
Agree, nice 253. How many hours of data? The colour might be simply because you have overstretched the data or colour blotch. I also tended to get red colour blotch with my 400d, particularly around the edges. I found Carboni's colour blotch reduction tool do a very good job at removing it.
Do you have an example of a 4min dark file? Does it have this red region in there?