MDM Observatory 2.4m Telescope Observing Report for 2021 May 18

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

Instrument: CHaS

Worked for 8 hours (all night)
Conditions were Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

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

Observing Summary:

Adjusted CHaS optical shimming to improve focus and went on-sky. 
Observed various galaxy and nebulae targets throughout the night
and performed throughput tests. 

We experienced a period where the RA stopped responding. 
Slew would not complete and the RA current looked high. It resumed responding 
after a few attempted slews (after changing to a different declination).  

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Submitted on 2021 May 19 [4:04:37]