MDM Observatory 2.4m Telescope Observer's Report for 2004 Sep 21 Observer(s): Chris Morgan Institution(s): Ohio State Instrument: RETROCAM/ MkIII Worked for 10 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 Light & Variable Mid: Seeing 1.8 arcsec, Clear, Winds Light & Variable End: Seeing 1.5 arcsec, Clear, Winds Light & Variable Observing Summary: -Obtained a focus offset measurement for operating RETROCAM with the MkIII spectrograph. (Logged in the RETROCAM users manual). -Conducted thorough testing of the RETROCAM control software. Some minor glitches exist, but RETROCAM is ready for use by the general observing community. -Took photometric data for 8 lensed quasar systems. ------------------------------ Submitted on 2004 Sep 22 [4:03:43]