MDM Observatory 2.4m Telescope Observing Report for 2016 Feb 20

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

Instrument: Modspec + Echelle CCD

Worked for 12 hours (all night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Clouds from start until 11:30.
   Beg: Seeing 1+ arcsec, Cirrus, Winds Light & Variable
   Mid: Seeing 1 arcsec, Clear, Winds Light & Variable
   End: Seeing 1 arcsec, Clear, Winds Light & Variable

Observing Summary:

Started the night under a band of cirrus streaming from the 
SW with a well-defined edge to the west; the edge worked its
way westward and finally passed MDM around 11:30 PM, after which 
it was nice and clear, albeit moony.  Got some good data, and
some not-so-good through moonlit cirrus.  No problems.

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Submitted on 2016 Feb 21 [6:57:04]