MDM Observatory 2.4m Telescope Observing Report for 2022 Jan 10

Observer(s): John Thorstensen
Institution(s): Dartmouth

Instrument: OSMOS + B4k

Worked for 13 hours (all night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 3-5 arcsec, Cirrus, Winds High
   Mid: Seeing 2-4 arcsec, Cirrus, Winds Moderate
   End: Seeing 2-3 arcsec, Cirrus, Winds Light & Variable

Observing Summary:

Mostly clear, but high clouds around.  The big factor tonight 
was strong wind in the first half, and very bad seeing -- more
than 5 arcsec at times.  The wind and seeing moderated in the 
second half of the night, but the seeing was never better than 
mediocre.  Fortunately I was able to select some relatively easy
targets and advance the frontiers of knowledge despite the 
poor conitions. Everything worked.  I never checked the focus,
since the seeing was so poor.

Two minor issues at the end of the night: 

1) Through operator error I managed to freeze the middle panel
of the prospero display.  The data were still coming in fine. 
I tried clearing it, but it doesn't re-paint, so something needs
to be re-started and I figured it would be best not to waste 
sleeping time on it.

2) The LN2 fill hose developed an embolism right at the storage
dewar end, but did not burst, so I got a good fill in the 
morning.

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Submitted on 2022 Jan 11 [7:15:05]