MDM Trouble Report for 2014 Nov 16

Telescope: 2.4m
Observer(s): David Jaimes, Stephanie Douglas (Columbia University)
Instrument: ModSpec/Echelle

Problem(s) Encountered:
The mirror A/C computer was reading RH=0.0% for most of the night,
along with an impossibly negative dewpoint temperature (less than
-100 degrees C, sometimes less than -1000 degrees C). 

Since the humidity was very low most of the night, and the 
dewpoint 15-20 degrees below the mirror temperature (according to 
the weather station monitor in the control room), we continued 
observing while monitoring the humidity and checking for dew 
outside.

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Submitted on 2014 Nov 17 [6:14:17]