MDM Observatory 2.4m Telescope Observing Report for 2013 Sep 10

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

Instrument: Modspec + Templeton

Worked for 9 hours (most of the night)
Conditions were Mixed most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   High Humidity from midn until 1 AM.
   Beg: Seeing 1 arcsec, Patchy Clouds, Winds Light & Variable, humidity rising
   Mid: Seeing 1 arcsec, Clear, Winds Light & Variable, closed briefly
   End: Seeing 1 arcsec, Clear, Winds Calm, humidity dropped 

Observing Summary:

The night started with the last of the fair-weather cumulus, and
rather high humidity, but usable.  Humidity very slowly 
crept up until midnight, when I closed for about an hour.
It then dropped quickly and I worked the rest of the night 
under clear dark skies with decent seeing.  

One minor glitch with instrument rotator described in trouble
report. 

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Submitted on 2013 Sep 11 [6:06:51]