MDM Observatory 2.4m Telescope Observing Report for 2025 Sep 10

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

Instrument: OSMOS

Worked for 4 hours (first half of the night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   High Humidity from 12:30 until end.
   Beg: Seeing 1.5 arcsec, Clear, Winds Moderate
   Mid: Seeing 1.5 arcsec, Clear, Winds Moderate
   End: Fog/Low Clouds, Winds Moderate

Observing Summary:

A thunderstorm passed close by to the west before sunset,
and we got a few drops.  Then it cleared rapidly and I was able
to open before the end of twilight.  The humidity rose gradually
and it was game over by a bit after midnight; there was fog
blowing fairly low overhead so I gave up and went to be around 2,
and forgot to push  submit  on my drafted report!

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Submitted on 2025 Sep 11 [12:33:05]