I think I have fixed this and it may be a MaxIm DL question but wondered if anyone has seen this. I was running a sequence tonite and everything went smoothly for the first 5 or 6 300 second exposures. Suddenly when ACP had finished it's guide star dither and commanded an exposure, the guide star became only a bright pixel and I started to get a guide star faded message in MaxIm. The guiding also went to the dogs.

I then tried guiding just in MaxIm and got the same thing. It was fixed when I changed the guide exposure time (which forces a new dark frame when you have it set to the default, which is "simple dark"). It appears that somehow MaxIm is misapplying the dark or maybe applying it twice since disabling the simple auto dark seems to have fixed the problem.

Anyone seen this?