MDM Observatory 2.4m Telescope Observing Report for 2017 Jan 16

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

Instrument: modspec + echelle CCD

Worked for 4 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 time until time.
   Beg: Clear, Winds Light & Variable
   Mid: Seeing 1+ arcsec, Clear, Winds Light & Variable
   End: Clear, Winds Light & Variable

Observing Summary:

The tail end of a storm still around at dinner, with
fog and some sprinkles -- with Graupel (small frozen raindrops
similar to hail) mixed in.  But this dissipated after
sunset, and the humidity dropped to an acceptable level around
10 PM.  Opened up then -- very carefully! -- and worked until
1:15 or so, when the RH spiked upward.  Could open again about
3, and stayed open until about 4:15, when it rose for the rest
of the night.  KPNO stayed open from 10 until about 4, so it
must have been a bit more humid down here.  Weather was pretty
clear, seeing was quite usable, and got a lot done during the 
usable time.

The dome returned about 2 feet from the contacts the first time
I closed, but was pretty much on them when I closed the 
second time.  Noticed that the Andor camera shutter was firing
(needlessly) when I went out to fill the dewar, and set it 
to be permanently open.  

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Submitted on 2017 Jan 17 [6:21:44]