MDM Observatory 2.4m Telescope Observing Report for 2015 Jan 21

Observer(s): Hainline, Carroll, Babu
Institution(s): Dartmouth College

Instrument: OSMOS

Worked for 12.5 hours (all night)
Conditions were Non-Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   High Humidity all night.
   Beg: Seeing 1.1 arcsec, Cirrus, Winds Light & Variable
   Mid: Seeing 1.5 arcsec, Cirrus, Winds Light & Variable
   End: Seeing 2.0 arcsec, Cirrus, Winds Light & Variable

Observing Summary:

We had a pretty productive night, observing five
targets, including the supernova for Rob. We had
humidity that reached 82-83% at the high point,
at around 1-2 AM, but then it dropped. The only
issue we had was with prospero not being able to
communicate and move the slit wheel, which we 
experienced at around midnight. After cycling the
power on a few computers, we had to call Eric, who
walked us through the fix, cycling the power on
the IC. This was helpful since this happened again
at around 4 AM. Everything went pretty well, 
otherwise. We filled the dewar at the 1.3 in the
evening and the morning, for Rob, as well. 

We also should note that in the last set of
exposures, we had a few rows to the north of the chip 
read out entirely black together.

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Submitted on 2015 Jan 22 [7:16:12]