MDM Observatory 2.4m Telescope Observing Report for 2009 Mar 09

Observer(s): John Thorstensen
Institution(s): Dartmouth

Instrument: modspec + echelle CCD

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

Seeing and Weather:
   High Humidity from 4:30 until end.
   Beg: Seeing 0.8 arcsec, Clear, Winds Moderate
   Mid: Seeing 1+ arcsec, Cirrus, Winds Moderate
   End: Cirrus, Winds Light & Variable

Observing Summary:

The night started well, with near-photometric sky and surprisingly 
good seeing despite considerable wind.  But around 10 PM or so it 
started to cirrus up, and it got pretty bad.  Cirrus is really
a problem with a nearly full moon!  I did manage to make use
of nearly the whole night by looking at bright backup targets.
However, around 4:30 AM the humidity climbed to unacceptable
levels, so I had to close. 

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Submitted on 2009 Mar 10 [5:53:52]