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Old 27-08-2019, 04:47 PM
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Slawomir (Suavi)
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Slawomir is offline
 
Join Date: Sep 2014
Location: North Queensland
Posts: 3,240
My bet is on light pollution causing the gradient. Try taking an image of a star field directly overhead - the gradient should lessen/go away, and/or rotate the camera by 90 deg - the gradient most likely will change to left-right direction confirming whether it is indeed light-optical and not camera related gradient. You will definitely need to use flats though to clean up the lights as there are a few dust donuts quite visible in the images you provided.
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