MDM Observatory 2.4m Telescope Observer's Report for 2003 Feb 22 Observer(s): Pizagno Institution(s): OSU Instrument: CCDS Worked for 13 hours (all night) Conditions were Non-Photometric most of the night. Problems were encountered, see the separate trouble report for details. Seeing and Weather: Clouds all night. Beg: Seeing 1.5 arcsec, Cirrus, Winds Calm Mid: Seeing 2 arcsec, Cirrus, Winds Calm End: Seeing 2 arcsec, Cirrus, Winds Calm Observing Summary: Towards the end of the night a blotch , veins , and streams were seen in the images. These appeared suddenly at the end of the night (4am Feb23). The artifacts were seen in the dark frames and in the flats. ------------------------------ Submitted on 2003 Feb 23 [6:13:51]