MDM Trouble Report for 2001 Feb 2

Telescope: 2.4m
Observer(s): Lepine, De Marco (Columbia)
Instrument: MkIII spectrograph

Problem(s) Encountered:
Problems with cooling of the CCD:

CCD was apparently not filled up properly at beginning of 
the night. CCD heated up to -10C before problem was found.
The dewar was then filled up properly and we had to wait for
the chip to cool off. On filling the dewar the first time,
overflow would begin ~5 minutes after starting to fill up,
becoming  heavy  after ~7 minutes. This has proven to be
insufficient to fill the dewar. It should be indicated how
long for the dewar has to be filled up (and how one can
determine when it is full).

Problems with acquisition on the guide camera:

RA/DEC encoders were reset on a bright target at the start 
of the night, and the image of the star marked with a cross
on the guide screen. The pointing then appeared to drift 
throughout the night, and was off by ~1 arcmin for targets 
acquired at the end of the night.

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Submitted on 2001 Feb 3 [7:31:05]