MDM Observatory 2.4m Telescope Observer's Report for 2001 Jun 25 Observer(s): John Thorstensen Institution(s): Dartmouth Instrument: Modspec + echelle Worked for 8 hours (all night) Conditions were Non-Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Beg: Seeing 1 arcsec, Patchy Clouds, Winds Light & Variable Mid: Seeing 1 arcsec, Patchy Clouds, Winds Calm End: Seeing 1 arcsec, Clear, Winds Calm Observing Summary: A storm system which dropped some rain today moved out by late afternoon and by nightfall there were big clear patches; conditions were partly cloudy through the night but nearly clear by morning. Seeing was good, as judged from light entering the 1-arcsec slit. Had to wait for clouds to pass from time to time. Got lots of data on several cataclysmic variables for orbital periods, long-term ephemerides, and IDs. ------------------------------ Submitted on 2001 Jun 26 [5:35:38]