MDM Observatory 2.4m Telescope Observer's Report for 2005 Dec 06 Observer(s): Frank Institution(s): OSU Instrument: CCDS + Retrocam Worked for 12 hours (all night) Conditions were Non-Photometric most of the night. Problems were encountered, see the separate trouble report for details. Seeing and Weather: Beg: Seeing 1.0 arcsec, Clear, Winds Calm Mid: Seeing 1.4 arcsec, Cirrus, Winds Calm End: Seeing 1.0 arcsec, Cirrus, Winds Calm Observing Summary: Great night at beginning, roughly 1'' seeing, very stable. Around midnight some high cirrus --> not-photometric anymore ! Lost about 40 minutes in the end due to severe & repeated loss of pointing (initially only the usual small 'jumps/jerks' when it is cold, then complete loss due to large drift). ------------------------------ Submitted on 2005 Dec 7 [7:22:46]