MDM Observatory 2.4m Telescope Observing Report for 2015 Jan 19

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

Instrument: OSMOS

Worked for 13 hours (all night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 1.0 arcsec, Clear, Winds Calm
   Mid: Seeing 0.9 arcsec, Clear, Winds Calm
   End: Seeing 1.3 arcsec, Clear, Winds Calm

Observing Summary:

What a productive night! We observed four separate objects
while getting our bearings with OSMOS. We had around 1  seeing
throughout, with very few clouds and no strong wind. We also
opened up and closed for the 1.3m, and filled their dewar in 
the afternoon and in the morning. We only had one problem - 
in our last set of 30 minute exposures, we had one where the
object we were observing seemed to jump midway through the
observation to a second position along the slit, as if someone
input a dx into the guide probe, which effectively doubled
the objects in the image. The next image did not show this
doubling, but the object was now at the new, second, position. 
I've put the three images before (j1316.0083), during (j1316.0084),
and after (j1316.0085) this shift on ds9 in the control room 
to see. 

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Submitted on 2015 Jan 20 [7:07:32]