MDM Observatory 2.4m Telescope Observing Report for 2016 Sep 02 Observer(s): Halpern, Alford Institution(s): Columbia 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 1.6 arcsec, Clear, Winds Light & Variable Mid: Seeing 1.4 arcsec, Clear, Winds Light & Variable End: Seeing 1.4 arcsec, Clear, Winds Light & Variable Observing Summary: The only problem was that the mirror AC wasn't working all afternoon, from about noon onward. This was apparently not because of the dewpoint, which was low. I rebooted the computer this morning following the instructions on the page in the computer room. It still doesn't seem to be cooling, as the AC coils are at ambient temperature. I (Jules) will check it again around noon. ------------------------------ Submitted on 2016 Sep 3 [6:11:41]