MDM Observatory 2.4m Telescope Observing Report for 2021 Dec 08

Observer(s): Thorstensen,Garcia-Soto,students
Institution(s): Dartmouth

Instrument: OSMOS+B4K

Worked for 4 hours (part of the night)
Conditions were Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   High Humidity from 3AM until 5 AM.
   Beg: Clear, Winds Calm, Not on site
   Mid: Seeing 1.5 arcsec, Clear, Winds Light & Variable, Open
   End: Clear, Winds Light & Variable, Humidity

Observing Summary:

Drove down mid-afternoon to fetch 5 students (4 undergrad and 
Aylin, the TA) at the airport.  By the time we got the Forester,
got a nice dinner at Mi Nidito, procured provisions, drove
up, and settled in, it was 11 PM, so opened then.  Humidity rose
for a while and forced closure about 3 AM; humidity dropped 
around 5 AM so purged detector with dry nitrogen, re-opened,
and observed for a short while into twilight.

At start had trouble with the mirror support hardpoint 2, which 
I overrode.

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Submitted on 2021 Dec 9 [6:41:48]