MDM Observatory 2.4m Telescope Observing Report for 2017 Mar 31

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

Instrument: ModSpec + echelle

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

Seeing and Weather:
   Clouds from 9PM  until 11PM.
   Beg: Seeing 1.5 arcsec, Cirrus, Winds Moderate
   Mid: Seeing 1.3 arcsec, Clear, Winds Light & Variable
   End: Seeing 1 arcsec, Cirrus, Winds Light & Variable

Observing Summary:

Very dusty mid-day - could barely see the Sierritas -- but by 
sunset one could see colors on Mt Hopkins, so the dust had 
pretty much cleared.  Mostly clear, but with a 2-hour interval
of heavy high cloud during the first half, and just a little 
intermittent cirrus in the morning.  Seeing was variable,
and good by the end.  Much cooler than the last few nights.  Dome
behaved itself.  Very productive.

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Submitted on 2017 Apr 1 [6:19:20]