Quote:
Originally Posted by rmuhlack
Could be hot pixels maybe? is that image a single sub, or an integrated stack? if it is just a single sub, then if you dither between subs and use pixel rejection (such as winsorized sigma clipping or linear fit clipping) during pre-processing, perhaps with subsequent cosmetic correction as well, then that may clean up the stacked frame.
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G'day Richard, image is stacked. Dithering is every sub. Will check out your clipping suggestions for pre-processing. Thanks.