MDM Observatory 1.3m Telescope Observing Report for 2011 Jan 22

Observer(s): Jackie Faherty
Institution(s): American Museum of Natural History

Instrument: MKIII

Worked for 8 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 1 arcsec, Clear, Winds Light & Variable
   Mid: Seeing 1 arcsec, Clear, Winds Light & Variable
   End: Seeing 1 arcsec, Clear, Winds Light & Variable

Observing Summary:

I filled the dewar at 7am on Jan 22.  At that time the detector temperature
was ~-80.  When I awoke and checked on the detector at ~3pm the temperature
had risen to +2.  I filled the dewar and the temperature dropped rapidly.
I started observing at 7pm when I was able to get the detector down to -80.
However the temperature continued to rise throughout the night.  I filled 
the dewar 8-10 times during the night as I closely monitored the changing
temperature.  I have filled the dewar this morning at 7am however I am 
noticing that even though I just filled it, the temperature is rising.


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Submitted on 2011 Jan 23 [7:17:40]