MDM Observatory 2.4m Telescope Observing Report for 2012 Nov 11

Observer(s): Emily Bowsher, Stephanie Douglas
Institution(s): Columbia University

Instrument: ModSpec

Worked for 10.5 hours (all night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Clear, Winds Calm
   Mid: Clear, Winds Calm
   End: Clear, Winds Calm

Observing Summary:

Seeing was poor at the beginning of the night but improved drastically.
We had problems with our arc lamps and flats having extremely low counts, we 
realized it was because the guide camera was blocking the light.  We were able to
move the guider to the origin and that resolved the issue.
On three observations of different exposure times (900s, 600s, 1200s) we had 
diagonal streaks going across the detector.  In the shorter exposures, the streaks were
not much stronger than the background.  In the longer exposure they were more
noticeable.  These streaks did not appear in flats.  We couldn't figure out what these
were, but they always went away.

------------------------------

Submitted on 2012 Nov 12 [5:39:46]