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Old 09-11-2013, 10:53 PM
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DavidNg (David)
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Join Date: Apr 2011
Location: Sydney
Posts: 341
I used dimmable lightbox bought from Peter and MaximDL SkyFlatAssistant plug-in. Very much automated. I do too think vignetting and dust shadows are significantly reduced from flats. I Google searched target ADU, many said 1/3 of depth well is ok, so I used 22k, will try much higher as Greg, Allen and other have used.
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