MDM Observatory 2.4m Telescope Observing Report for 2018 Jun 07

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

Instrument: modspec + echelle

Worked for 9 hours (all night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 1 arcsec, Clear, Winds Light & Variable
   Mid: Seeing 0.8 arcsec, Clear, Winds Light & Variable
   End: Seeing 0.8 arcsec, Clear, Winds Light & Variable

Observing Summary:

By far the best night of the run -- very good seeing and 
transparency.  No technical problems.  Note that the seeing
estimates I make are guesstimates -- I'm not measuring any
FWHMa.

I had decent seeing in morning twilight, so I put a nice 
10th-mag standard star on the slit jaws and
took a movie with the Andor scanning through the focus.  This
should be helpful I think.

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Submitted on 2018 Jun 8 [5:38:41]