MDM Observatory 2.4m Telescope Observing Report for 2021 Oct 05 Observer(s): Fesen Institution(s): Dartmouth Instrument: OSMOS Worked for 10 hours (all night) Conditions were Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Beg: Seeing 1.5 arcsec, Clear, Winds Light & Variable Mid: Seeing 1.2 arcsec, Clear, Winds Light & Variable End: Seeing 1.7 arcsec, Clear, Winds Calm Observing Summary: Clear night but with variable seeing (1.1 - 1.7). Noticed several dust/fibers on the dewar window. Tried blowing N2 into OSMOS but this did not remove the particles. Switched to spectra for the rest of the night. No other issues. A decent start to the run. ------------------------------ Submitted on 2021 Oct 6 [5:52:38]