MDM Trouble Report for 2018 Dec 03

Telescope: 2.4m
Observer(s): Rupert (MDM)
Instrument: OSMOS/B

Problem(s) Encountered:
Started the night getting good focus and using the 
temperature-dependent focus shift feature. I noticed midway
through the night that the focus wasn't great. So I disabled
the feature and used the focus4k prospero procedure to find 
best focus again. While running focus4k, I noticed that the 
telescope wasn't going to the values specified by prospero. 
It was off by about the total amount that it had shifted (-35)
using the focus shift feature before I disabled it. This was
also true when I plugged in a focus value into the TCS.
I used the hand paddle to get to my new best focus and enabled
the focus shift feature again. When I did this, it moved the
focus by +35 and started doing it's thing. I ended up disabling
the feature again, manually moving it back to the new best focus,
and enabling it again. It behaved after that.

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Submitted on 2018 Dec 4 [6:52:17]