MDM Observatory 2.4m Telescope Observing Report for 2015 Jan 20

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

Instrument: OSMOS

Worked for 12 hours (all night)
Conditions were Non-Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Clouds from 6:00 until 7:00.
   Beg: Seeing 1.0 arcsec, Cirrus, Winds Calm
   Mid: Seeing 1.3 arcsec, Cirrus, Winds Calm
   End: Seeing 1.5 arcsec, Patchy Clouds, Winds Light & Variable

Observing Summary:

We had another productive night tonight, observing an
additional four targets. The seeing was not as good as
yesterday, and we went from 1  to around 1.5  seeing
due to light cloud cover that eventually lead to 
moderate cloud cover at the end of the night, ending
our evening. The last set we were only able to get 
2x1800s exposures before clouds prevented us from 
getting another. We had one issue with a doubling of
the emission lines in the spatial direction for one
of our objects, and it happened when we went down to
the 1.3m to close their dome for the night (yesterday,
the doubling happened when we went down to the 1.3 
meter to fill their dewar on our last set of exposures).
I can't see a connection, but it also could be that we
had an entry into the MIS dx or dy fields which was
accidentally triggered. Otherwise, a very nice night!  

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Submitted on 2015 Jan 21 [6:14:26]