MDM Observatory 2.4m Telescope Observing Report for 2010 Dec 18

Observer(s): S.Lepine
Institution(s): AMNH

Instrument: Direct + Echelle

Worked for 10 hours (most of the night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   High Humidity from 4am until 7am.
   Beg: Seeing 1.0 arcsec, Clear, Winds Calm
   Mid: Seeing 0.9 arcsec, Clear, Winds Light & Variable
   End: Clear, Winds Light & Variable

Observing Summary:

Clear night but with fairly high relative humidity, never
below 65 percent. Observed without incident until 4:30 am, 
when humidity abruptly rose above safety limits. Closed down 
for the rest of the night.

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Submitted on 2010 Dec 19 [6:46:35]