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Hi Ray,
Greg mentioned he uses the cursor in CCDStack to find the ADU value, although, as I use an Atik as well and am a bit of a noob still when it comes to taking flats with my light box, what do you suggest I use to determine the ADU value of the fits files? I think it works in Nebulosity when I debayer the fits file and go to the info page, but I am not confident this is correct?
Any tips on determining the correct ADU per flat would be of great help, as I find some flats (say 0.5 sec with my light box) give me a histogram in Nebulosity between say 18,000 and 30,000 so I guess that is somewhere in the 24,000 range for ADU?
Is there an easier way?
Thanks
Chris
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