MDM Observatory 1.3m Telescope Observing Report for 2012 Jan 19

Observer(s): Adams and Stoll
Institution(s): OSU

Instrument: CCDS

Worked for 12 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 1.2 arcsec, Clear, Winds Calm

Observing Summary:

We lost about 20 minutes total, half of which was due to multiple 
TCS link losses, which we think may be related to attempting to 
move the guide probe (through Prospero, if it matters) while the 
telescope is slewing (through JSkyCalc, if it matters).  We don't 
expect to encounter this again.

The other 10 minutes lost is more troubling because we don't have 
a guess to the cause or the fix.  We describe it more fully in 
the trouble report, but the telescope suddenly started to drift 
north, and just as suddenly stopped six minutes later, though 
seemingly not in response to anything we tried while attempting 
to diagnose and fix it.  The only theory we have is that it may 
be a telescope balance issue.

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Submitted on 2012 Jan 20 [6:43:56]