MDM Observatory 2.4m Telescope Observing Report for 2010 Mar 23

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

Instrument: Modspec + Echelle CCD

Worked for 8 hours (last half of the night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Fog from start until 8 PM .
   Beg: Fog/Low Clouds, Winds Light & Variable
   Mid: Seeing 1.5+ arcsec, Clear, Winds Light & Variable
   End: Seeing 1 arcsec, Clear, Winds Light & Variable

Observing Summary:

Fog and rain today blew out by mid-evening, leaving skies mostly 
clear.  Humidity took a while to settle and never dropped as 
much as I'd hoped, but it was good enough until it started 
climbing during morning twilight.  Poor seeing early on, which
improved as the mirror cooled.  Dome functioned normally and may
be fixed.  The dome shutter clunked quite loudly a few times 
as it was closing, but it did operate correctly otherwise.

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Submitted on 2010 Mar 24 [6:02:10]