MDM Observatory 2.4m Telescope Observer's Report for 2001 Feb 02

Observer(s): Lepine, De Marco
Institution(s): Columbia

Instrument: MkIII spectrograph

Worked for 7 hours (off and on through the night)
Conditions were Non-Photometric most of the night.
Problems were encountered, see the summary for details.

Seeing and Weather:
   Beg: Clear, Winds Light & Variable
   Mid: Clear, Winds Light & Variable
   End: Clear, Winds Light & Variable

Observing Summary:

Had problems with the CCD: very high background counts first
attributed to a bright sky; at about 11pm we realized that the 
CCD was not cool enough. For some reason, it appears that the 
dewar had not been filled up properly at the beginning of the 
night and the CCD heated up to -10C. We refilled the dewar and
had to wait 90 minutes for the CCD to cool down again. The
CCD functionned well after being cooled down.


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Submitted on 2001 Feb 3 [7:16:42]