MDM Observatory 2.4m Telescope Observer's Report for 2002 May 21 Observer(s): Vestergaard Institution(s): OSU Instrument: CCDS Worked for 8 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 Calm Mid: Seeing 3 arcsec, Clear, Winds Calm End: Seeing 3 arcsec, Clear, Winds Calm Observing Summary: Weather is most likely photometric. The CCDS head electronics behaved. The only problems I encountered were bad seeing most of the night due to temperature dropping below mirror temperature. At 4:15am the telescope started jumping forth and back in E-W direction for 1 minute or so. It then went away. I have seen this before when it's cold (somewhat colder than 6C though!) My impression is there is no fix. ------------------------------ Submitted on 2002 May 22 [5:10:13]