MDM Observatory 2.4m Telescope Observing Report for 2018 Feb 07

Observer(s): Douglas, Weaver, Carmichael
Institution(s): Columbia

Instrument: OSMOS/R

Worked for 10 hours (all night)
Conditions were Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Beg: Clear, Winds Light & Variable
   Mid: Clear, Winds Light & Variable
   End: Clear, Winds Light & Variable

Observing Summary:

We were on sky for pretty much the whole night, and the sky was
beautifully clear, but somehow our counts were >2-3x too low for
the first half of the night, and were generally too low the whole 
night relative to past nights. 
There was no apparent obstruction to the telescope and the
1.3m observers had no apparent seeing or transparency issues. We
also had massive issues with the guide probe, and think this may
be related to the lost flux - details in the trouble report. 

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Submitted on 2018 Feb 8 [6:10:04]