MDM Trouble Report for 2018 Aug 13

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

Problem(s) Encountered:
I think there is something to do with the temperature-
dependent focus shift that messes with the dome's ability
to track the telescope. A couple of nights ago, I tried 
using this  now-working  feature of the TCS. While slewing
to a new target, the dome would stop, then start on its way
again, and repeat this several times. It then overshot it's
target position, stopped, then came back. I turned off the
focus feature, and it didn't happen again.

Tonight, I tried using that focus feature again, and while
taking an exposure, the dome started moving. I disabled the
focus feature while the dome was moving to who knows where.
It eventually stopped and made its way back to the telescope
position. I didn't enable the focus feature again, and there
were no issues with the dome after. Hmmmm...

------------------------------

Submitted on 2018 Aug 14 [4:30:10]