MDM Trouble Report for 2016 Nov 24

Telescope: 2.4m
Observer(s): Jaejin Shin (Seoul national University)
Instrument: OSMOS

Problem(s) Encountered:
Around 2 am, background count was ~8000. I figured out it is because of 
high CCD temperature (~ -35). It is weird because I filled liquid nitrogen and 5:30pm and
I checked the nitrogen leaking which means it is totally filled.

Anyway, around 3 am, I refilled nitrogen again, temperature went down, and background
count came back to normal value.


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Submitted on 2016 Nov 25 [6:11:18]