MDM Observatory 1.3m Telescope Observing Report for 2018 Sep 28

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

Instrument: Templeton CCD direct

Worked for 11 hours (all night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 2 arcsec, Clear, Winds Light & Variable
   Mid: Seeing 2 arcsec, Clear, Winds Calm
   End: Seeing 2 arcsec, Clear, Winds Calm

Observing Summary:

Very good night, no problems.  

Paused scientific observations to take images on either side of 
focus.  Discussing this earlier with Eric we realized that one
would have a hard time figuring out the orientation of the donuts,
so Tony fabricated a plate that could be bolted to the top of the
telescope and impinge on the pupil at a known quadrant (southwest
in this case).  I installed this before the observation and took
it off afterward -- it worked nicely, since I could see it in the
far out-of-focus images.

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Submitted on 2018 Sep 29 [6:20:12]