MDM Observatory 2.4m Telescope Observing Report for 2017 Oct 29

Observer(s): Rupert
Institution(s): MDM

Instrument: OSMOS/B

Worked for 11 hours (all night)
Conditions were Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Beg: Seeing 1.4 arcsec, Clear, Winds Calm
   Mid: Seeing 1.4 arcsec, Clear, Winds Calm
   End: Seeing 1.4 arcsec, Clear, Winds Calm

Observing Summary:

The telescope went for its limits again, twice. The first
time it was in the northwest, slewing to zenithish and it tried
to go to its western limit instead. The second it was on the
meridian in the southern sky and tried to go east. Again,
I used the hand paddle to get it near zenith, and it seemed to 
solve this issue, but it takes a few minutes to go through
the motions.

At the end of the night, the instrument rotator was off by
-6.7. After a few nights of tracking its behaviour, it seems
that the rotator moves more than it thinks it does, and that
it gets progressively worse throughout the night. Otherwise a
good night!

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

Submitted on 2017 Oct 30 [6:41:00]