I was running a sequence last night with darks at the end of the night and noted that CCD temp is missing from the fits file header on some, but not all, files. I think these were the only missing fits items as the fits list was just two items less in the files where temp info was missing.
Specifically the second target was M81, I took 7 luminance frames of M81 followed by four each RGB. The luminance frames had the CCD-Temp and Set-Temp, the RGB did not. All targets after that were missing the temp information.
Will this temp information show up if the cooler was somehow off or does the cooler have to be on for the fits temp information to show up? I don’t know why the cooler would have turned off itself off (it is working now) but it now appears that is what happened.
FYI, the image where the temp info stopped starts at around line 34100.
UPDATE: I am running the darks again now and the information is there and based on a quick dark subtract, it does appear the cooler somehow turned itself off. I am at a loss to know how as I was just letting it run. I suppose I could have bumped the mouse just wrong while working on the other adjacent PC but this seems very unlikely. I guess a related question is if I did somehow click by accident and turn the cooler off, would that show in the log?