MDM Observatory 1.3m Telescope Observing Report for 2017 Sep 11

Observer(s): Jules Halpern
Institution(s): Columbia

Instrument: Templeton 

Worked for 8 hours (most of the night)
Conditions were Non-Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 2 arcsec, Patchy Clouds, Winds Light & Variable
   Mid: Seeing 1.8 arcsec, Patchy Clouds, Winds Moderate
   End: Seeing 2 arcsec, Patchy Clouds, Winds Moderate

Observing Summary:

Got a late start by about 1 hour due to threatening clouds.
When the threat lifted, I spent the rest of the night
on one long time series.  Bunches of small clouds came through
several times during the night, interrupting the observation
for 15-30 minutes each time. I ended a bit early because
the telescope at +53 declination hit a software limit at HA +5.
I'm not sure if this limit is enforced by JSkyCalc or the TCS
or both, but HA +5 seems a bit too conservative at the
declination of +53, where the airmass is only 1.79 and the 
telescope won't hit the wire.

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Submitted on 2017 Sep 12 [3:56:30]