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Sky flats assistant and maxim dl with DSLR

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I have been using Sky flats assistant with Maxim dl and cannon 1100d .Readout mode raw monochrome ,what target ADU should I set . I last set this to 8192 as I saw this figure on a imaging thread but result not great can still see vignetting circle below is a image calibrated with 12 flats averaged with ADU 8192

cheers karlngc891_zps292d6aec.jpg

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Discussion going on on Maxim Yahoo group on this subject at the moment.


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Beautiful shot!

I remember the Maxim help stating that the curve should be 30%-50% exposure, so assuming 1100D has a 14 bit sensor then the max value (i.e. burned out white) will be 16384. 50% of that is 8192...

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