MDM Observatory 2.4m Telescope Observing Report for 2011 Nov 28

Observer(s): Dai, Morabito
Institution(s): Univ of Oklahoma

Instrument: OSMOS

Worked for 12 hours (all night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 1.4 arcsec, Clear, Winds Calm
   Mid: Seeing 1.3 arcsec, Clear, Winds Calm
   End: Seeing 1.2 arcsec, Clear, Winds Calm

Observing Summary:

We were thinking there might be a shutter inaccuracy in the R4K.
After extended further measurements using a stop watch by 
measuring the time lapse between the shutter open time and close 
time, we found an average consistent with the requested exposure 
time.  So, there is no problem.

Call rroi2x1k doesn't work.

When reading out using rroi1k, the top and bottom edges can be
saturated with sky background of ~20000.

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Submitted on 2011 Nov 29 [6:55:22]