It all began when I found those black patches on my images. Besides those patches walking noise was visible (tried to point it with those arrows)
www.cloudynights.com/topic/726700-does-t...-set-of-dslr-images/
This is also the result without even know what is dithering.
This is a result of Stellarmate and 5px dithering. I think it is an improvement. Then I've read that in fact with DSLR people go even further with 10-15px.
So the 1st M33 is with Stellarmate and 10px dithering, then I had all those issues with Astroberry and Internal Guider dithering and tried the M33 above with PHD2.
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