This is one of my first times using my asi 1600mm cool and have a small problem. I have this weird pattern noise, If anybody knows how to resolve this it would be greatly appreciated.
The settings for this test was
30x2min 2x2 bin subs in HA at unity gain with cooling set at -20C.
30x2min 2x2 bin dark (same gain and temp)
I realize now i probably shouldn't bin my frames but I was just trying to test it out for an hour or so under clear skies.
Any help would be appreciated. No flats or biased frames were used.