MDM Observatory 2.4m Telescope Observing Report for 2025 Sep 13

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

Instrument: OSMOS

Worked for 8 hours (most of the night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Clouds from 3AM  until end.
   Beg: Seeing 1+ arcsec, Clear, Winds Light & Variable
   Mid: Seeing 1+ arcsec, Clear, Winds Light & Variable
   End: Patchy Clouds, Winds Light & Variable

Observing Summary:

Beautifully clear with decent seeing until 3 AM, when mid-level
cumulus started streaming in from the south.  They got heavy 
enough that I closed not too long afterward. 

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Submitted on 2025 Sep 14 [5:09:18]