MDM Trouble Report for 2007 May 22

Telescope: 1.3m
Observer(s): Atlee & Peterson (OSU & OU)
Instrument: CCDS

Problem(s) Encountered:
The CCDS cryogenics system appears to be losing coolant.  The
Dewar was filled at 1620 on the afternoon preceding observations,
and by approximately 2AM the temperature readout on the CCDS box
had begun to rise, and by the end of the night had reached -80C.
A similar problem occured previously, but was dismissed as human 
error, specifically I assumed that I had not filled the Dewar all
the way.  On this occasion, we are quite certain that the Dewar 
was filled correctly, but the warming trend nevertheless began 
earlier in the night.

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

Submitted on 2007 May 23 [5:31:48]