Image Saturation (4K)

Saturday, June 11, 2022 5:41 AM

Problem(s) Encountered:

The problem arose when I was trying to acquire field/slit images so I could align them in my effort to take spectra for my first target. As I obtained the two images, I opened them at ds9 and they were completely saturated. I tried to retake them and take different kind of frames (bias, lamp images) but the result was the same. I believe the issue is the CCD (chip) but I am not sure if the problem originates from the electronics or the software. I tried to restart MIS but again, this was not the problem.    


Dewar had warmed up.  Thankfully it had warmed up completely (this afternoon when I arrived it was showing +30C) so I was able to immediately get it on the pump then start cooling it down.  By 1700 local time, it is down to ~ -30C and cold enough to show spectra from comp lamps.  So it looks good.  Should be back to being ready somewhere around 2030 local time is my guess.