MDM Observatory 2.4m Telescope Observing Report for 2021 May 21

Observer(s): Melso/Sitaram
Institution(s): Columbia University

Instrument: CHaS

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

Seeing and Weather:
   Beg: Clear, Winds Calm
   Mid: Cirrus, Winds Calm
   End: Clear, Winds Calm

Observing Summary:

Spent the night on sky. CHaS and the telescope performed well! 
We had clear skies with a few clouds in the middle of the night. 
We pulled the instrument during the day to adjust the guider focus 
and the re-installation did not result in significant changes to the 
imaging performance. We did notice that we needed to re-focus the 
collimator slightly after the detector was removed/reinstalled. 

We are noticing a bit more of the clanging. Maybe 5 total tonight. 

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Submitted on 2021 May 22 [4:15:25]