Quote:
Originally Posted by sjastro
Hi Craig.
Welcome back. The sky glow of the image can measured as a background pixel count using a CCD image capturing program such as CCDops.
While this is not an absolute value with images that have already been processed, the variation in the background count gives me an idea of how much skyglow can be subtracted without effecting the overall image.
Regards
Steven
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That is very cool.
I'm by no means an expert in this kind of processing however, looking at the 'before' and 'after' images, you can see how the really, really faint stars emerge when the background is subtracted .. which would mean that the process doesn't introduce too much more noise … which might then lead to artifacts appearing in the final image.
They say the raw image is the best taken so far .. if that is the case, then I reckon Steven's trumps it !
Patent the method/algorithm, Steven … quickly !!
Cheers