MDM Observatory 2.4m Telescope Observer's Report for 2001 Sep 19 Observer(s): Alves Institution(s): Colmbia Instrument: mdm8k Worked for 8 hours (all night) Conditions were Non-Photometric most of the night. Problems were encountered, see the summary for details. Seeing and Weather: Clouds all night. Beg: Seeing 1.6 arcsec, Patchy Clouds, Winds Moderate Mid: Patchy Clouds, Winds Calm End: Seeing 1.0 arcsec, Patchy Clouds, Winds Calm Observing Summary: dark slide came loose once during night when telescope was pointing at airmass 3 (gamma ray burst). clouds about, lost guide star in morning a few times. ------------------------------ Submitted on 2001 Sep 20 [6:08:21]