When I went to process this one I found I had no darks available for the 30 minute H alpha frames. Apparently I planned on taking them but never did. I scaled my 10 minute master dark to 30 but this camera doesn't seem as linear as most. It didn't work though with my bad eyes, I go in for cataract...
http://www.bautforum.com/showthread....d?goto=newpost