MDM Observatory 2.4m Telescope Observing Report for 2025 Aug 16

Observer(s): Luis Salazar Manzano, Ed lin
Institution(s): Michigan

Instrument: OSMOS 

Worked for 7 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 3 until .
   Beg: Overcast, Winds Light & Variable
   Mid: Clear, Winds Moderate
   End: Clear, Winds Moderate

Observing Summary:

We were completely covered by clouds up until 8:20 pm local time. We opened the telescope after that as the clouds were slowly disappearing. We had photometric conditions for pretty much the whole night after. However, around 2 am local time the relative humidity was increasing on top of jumping by significant amounts. We closed the telescope when we noticed it was getting close to 80% at ~3:00 am. We also noticed what appears to be condensation in some of our last images that were taken close to the Moon. Once we closed the telescope, we launched a sequence of flats and used Nitrogen to clear the CCD window, which was clean in less than 5 minutes after we started the process.

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Submitted on 2025 Aug 17 [5:26:08]