MDM Observatory 2.4m Telescope Observing Report for 2017 Sep 22

Observer(s): Weil
Institution(s): Dartmouth

Instrument: OSMOS/B

Worked for 7.5 hours (all night)
Conditions were Mixed most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Beg: Seeing 1.5-2 arcsec, Cirrus, Winds Light & Variable
   Mid: Seeing 1.5 arcsec, Cirrus, Winds Light & Variable
   End: Clear, Winds Calm

Observing Summary:

Problems with the telescope forced an early closure. A trouble
report with more details has been submitted.

Beginning of the night there was cirrus on the horizon. During
the middle of the night clouds formed in the Western sky but
they cleared quickly. Seeing was poor at the beginning
at the beginning of the night but improved in the middle of
the night. 

Telescope made a loud grinding sound that was intermittent at 
first but as the night went it got worse. The noise appeared 
to be coming from the mount holding the telescope near the RA/DEC
encoders. Since it sounded like the telescope gears were grinding 
and tracking was not smooth as the noise got louder, I closed the 
telescope to not damage it at 2am. 

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Submitted on 2017 Sep 23 [3:22:36]