MDM Observatory 2.4m Telescope Observing Report for 2015 May 03

Observer(s): Thorstensen&Alper
Institution(s): Dartmouth

Instrument: modspec + echelle CCD

Worked for 6 hours (off and on through the night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   High Humidity from 11 PM until 1:30A.
   Beg: Seeing 1.5? arcsec, Patchy Clouds, Winds Light & Variable
   Mid: Clear, Winds Calm
   End: Seeing 2 arcsec, Patchy Clouds, Winds Light & Variable

Observing Summary:

Odd weather in afternoon with fair-weather cumulus and some spots
of rain and virga.  Breezy, too.  Cleared off around sunset, and
winds quieted down, but humidity climbed gradually, and 
we closed around 11 PM.  Tstorms visible in far north.  

RH decreased around 1:30 PM so we opened again.  Had to 
run dry N2 to clear dewar condensation, but conditions held
for the most part for the rest of the night, though RH came up
toward end.  Closed a little early to get to the airport.

Seeing wasn't great, and with the moon just passing full around
sunset it was a mite bright, too.

No equipment problems.

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Submitted on 2015 May 4 [4:22:35]