[pmrid (Peter)]

I ran multiple sessions on the same target last night NGC5139. As an experiment, I wanted to see what might be causing blue halos on brighter stars by using no filter then a ZWO IRCut filter. I was doing 3 minute subs for all. At the end, I had some time before moonrise so for the hell of it, I decided to run some subs of M83. But I decided to run 10 minute subs instead of 3.

Dithering remained set at 1 pixel every 3 subs.

Trouble was, ASiair kept dithering at 3 minute intervals instead of 10. Most subs of M83 were ruined.

Just a note of caution for those who dither.