info asi1600mm pro

Last night it was the 1st light of my new cam, a 1600mm pro.

After a stack of 85 subs of 60s each i still get some pattern in the image.

I use max dithering in APT.

Is the dithering still to low or is it something else?

It is easy to see after a little stretch in PS.

Thx for the help.

I cannot see the noise in your image

maybe you can try to stack with "median" method?

Found the problem. In PHD2 the dithering was in spiral mode. with random dithering the problem is gone.

that's great news!