MDM Observatory 2.4m Telescope Observing Report for 2015 Nov 23

Observer(s): Hodges-Kluck, Park, Shinn, Jeon
Institution(s): Michigan/SNU

Instrument: OSMOS-B

Worked for 12 hours (all night)
Conditions were Non-Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Beg: Seeing 1 arcsec, Cirrus, Winds Calm
   Mid: Seeing 1 arcsec, Cirrus, Winds Calm
   End: Seeing 1 arcsec, Cirrus, Winds Calm

Observing Summary:

Observing went very well almost all night, with good weather and
no problems. Several targets were observed. However, close to 
morning twilight the dome encoders got lost and the dome started
rotating and getting stuck, occulting the telescope (possibly 
similar to the  fugue state  mentioned in prior trouble reports).
We tried to follow solutions from the archive, but the dome is 
still somewhat lost (we stowed it manually, but it has the wrong
azimuth). Also, it wants to move -- the TCS says  attempting to
move with drives off . In addition, slightly after this problem
started, the Dec encoder stopped responding and thus we basically
lost tracking (stars appeared as streaks). Since daylight was
breaking, we didn't solve the problem but we did get the 
telescope to zenith and stowed it there.

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Submitted on 2015 Nov 24 [7:20:38]