MDM Trouble Report for 2004 Nov 1 Telescope: 1.3m Observer(s): Grogin & Wegner (JHU & Dartmouth) Instrument: Echelle Problem(s) Encountered: Noticed that afternoon biases had substantial structure & extra counts compared with previous nights. Structure was also present during test biases at night with dome lights on, even with hatch closed. Applied much electrical tape, removed some but not all of leak . Taped over LEDs as well. Carried on through night hoping light-leak w/ dome lights off is not bad. Lost 2.5hrs trying to diagnose/cure the problem, but the light leak still appears to be there. Also noticed several times during the night that the North slew wouldn't engage -- sounded like grinding of gears. Needed several attempts with slew button before North slew would work. Maybe happened 1/10 of the time. Other slew directions were fine. ------------------------------ Submitted on 2004 Nov 2 [7:22:15]