MDM Observatory 2.4m Telescope Observing Report for 2010 Dec 12 Observer(s): Hsu Institution(s): Michigan Instrument: OSMOS Worked for 13 hours (all night) Conditions were Non-Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Clouds from 7pm until 12am. Beg: Seeing 3-4 arcsec, Fog/Low Clouds, Winds Light & Variable Mid: Seeing 1.5 arcsec, Clear, Winds Light & Variable End: Seeing 1.7 arcsec, Clear, Winds Light & Variable Observing Summary: I was using OSMOS in direct imaging mode. The clouds cleared after midnight or so and observing went okay after midnight. The seeing was not very good throughout the night. ------------------------------ Submitted on 2010 Dec 13 [7:09:52] NOTE: This report replaces the previous 2.4m telescope observing report for 2010 Dec 12