Quote:
Originally Posted by jase
A much improved rendition Steven. Well done. The data still looks clipped though. Is this intentional to circumvent the uneven field illumination? Are you applying (dividing) flats?
Cheers
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Hello Jase.
I take flats using a luminous painted light source which slips inside the dust cover.
http://users.westconnect.com.au/~sjastro/flatglow.html
I never have a problem with uneven illumination.
Unfortunately flats are completely useless when the CCD window frosts over as occurred in this case. I was forced to clip the histogram.
Regards
Steven