MDM Observatory 2.4m Telescope Observing Report for 2014 Feb 02

Observer(s): Seth Cohen
Institution(s): Dartmouth College

Instrument: OSMOS

Worked for 6 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:
   Clouds all night.
   Beg: Overcast, Winds Moderate
   Mid: Seeing 1.5 arcsec, Patchy Clouds, Winds Moderate
   End: Seeing 2.3 arcsec, Overcast, Winds Calm

Observing Summary:

Tonight was an all-night cloud battle.  The beginning and the end
of the night were overcast, so I was not able to take twilight
flats, nor was I able to observe a standard star after my last
science object.  The middle of the night was intermittently 
cloudy, which meant that every exposure taken included some time
in which clouds were passing.

Like last night, closing the dome dropout was accompanied by a 
thumping noise, but it closed fine.

In the middle of the night, after selecting a guiding star in 
the Guide Star Selector, the guider couldn't find the chosen
star.  I discovered that I had to apply dy = 500 to the guider 
every time to get it to find the star I had chosen.  This 
continued for the rest of the night.

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Submitted on 2014 Feb 3 [6:16:34]