MDM Observatory 2.4m Telescope Observer's Report for 2007 Sep 19 Observer(s): Bird & Prieto Institution(s): OSU Instrument: CCDS+RETROCAM Worked for 10 hours (all night) Conditions were Non-Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Beg: Seeing 1.0 arcsec, Clear, Winds Moderate Mid: Seeing 1.6 arcsec, Clear, Winds Moderate End: Seeing 1.3 arcsec, Clear, Winds Moderate Observing Summary: The night was clear, but the wind was variable (10-30mph) and the seeing was >1.3 arcsec most of the night. We didn't have any problems through the night until twilight when we slewed to observe a bright object at airmass 1.65 and hour angle -3. The RA and DEC encoders were not responding (message in TCS) and we couldn't track on the object. We closed up after that. ------------------------------ Submitted on 2007 Sep 20 [5:58:28]