MDM Observatory 2.4m Telescope Observing Report for 2009 Dec 05 Observer(s): zhu,zhao Institution(s): University of michigan Instrument: TIFKAM Worked for 10 hours (part of the night) Conditions were Non-Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Fog from 4:00a until 6:am. Beg: Seeing 1.5 arcsec, Overcast, Winds Calm Mid: Seeing 1.5 arcsec, Clear, Winds Calm End: Seeing 1.5 arcsec, Fog/Low Clouds, Winds Calm Observing Summary: Starting with a cloudy sky, we opened the dome around 9:30 pm. After several photometric and spectroscopic measurements, humidity rises. We close the telescope around 4:30 pm. Sometime the air conditioning computer said Air conditioner disabled, sensor malfunction , then I restart the computer. ------------------------------ Submitted on 2009 Dec 6 [7:56:10]