MDM Observatory 2.4m Telescope Observing Report for 2015 Sep 05

Observer(s): R. Mark Wagner
Institution(s): OSU

Instrument: OSMOS

Worked for 2 hours (part of the night)
Conditions were Mixed most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   High Humidity all night.
   Beg: Fog/Low Clouds, Winds Calm
   Mid: Seeing 1.8 arcsec, Clear, Winds Calm, RH 69-80%
   End: Fog/Low Clouds, Winds Calm

Observing Summary:

Night started out with threatening clouds.  Conditions improved and after I got
everything setup I opened around 22:30.  There were several problems that are 
described in a trouble report.  First, I had the same trouble with the OSMOS
disperser indexing as Stephan did.  It would not reset, move, or index at all.  I 
did find a work around.  Second, there was moisture on the CCD window.  That
went away after 15 minutes of purging with dry nitrogen.  Third and the bigger
problem is that I cannot get the guider stages to move at all.  I reset the MIS 
window several times to no avail.  I looked on the telescope for a box that might
be off.  It acts like something is turned off, disconnected, or there is a comm 
problem.  I closed around 12:30 am after I couldn't resolve the problem.

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Submitted on 2015 Sep 6 [1:03:56]