MDM Observatory 2.4m Telescope Observing Report for 2018 Feb 11

Observer(s): Douglas, Weaver, Carmichael
Institution(s): Columbia

Instrument: OSMOS/R

Worked for 3 hours (first half of the night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   High Humidity from 0430 until .
   Beg: Cirrus, Winds Light & Variable
   Mid: Clear, Winds Moderate, humidity
   End: Clear, Winds Moderate, humidity

Observing Summary:

There was light cirrus and a bit of blowing dust around sunset, but we opened 
near the end of twilight anyway. The dust died down a bit, but the humidity was
rising and spiked above the limit around UT~4:30. It floated around in the 90s and
80s for the rest of the night, descending below the limit briefly at times but it never
stayed low long enough for us to confidently re-open.

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Submitted on 2018 Feb 12 [3:51:19]