MDM Observatory 1.3m Telescope Observing Report for 2010 Sep 24

Observer(s): Chien-Ting Chen
Institution(s): Dartmouth

Instrument: CCDS

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

Seeing and Weather:
   Beg: Seeing 2.17 arcsec, Clear, Winds Moderate
   Mid: Seeing 1.48 arcsec, Clear, Winds Light & Variable
   End: Clear, Winds Calm

Observing Summary:

The images on the CCDS real time display went weird after about 4 hours of observation. Since then, every image I took would turn out to be nothing, more specifically, the entire CCD would be covered by a homogeneous  noise . Even the bias frames, which should be dark, have the same images.
I tried to refill CCD Dewar with LN2, but I guess I didn't fill in enough.

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Submitted on 2010 Sep 25 [16:26:13]