MDM Trouble Report for 2007 May 6 Telescope: 2.4m Observer(s): Sebastien Lepine (AMNH) Instrument: Direct + Echelle Problem(s) Encountered: The primary mirror air conditionning apparently did not work propely during the day, and the mirror was many degrees warmer than the desired Temp at the start of the night. The AC switch panel however looked normal, the breakers were all OK, and the mirror temp was at least 15 degrees-C above dewpoint. Fortunately the seeing was not degraded too much, though the mirror stayed 2-3 degrees C above ambient for most of the night. It is now just after morning shutdown, and the mirror appears to be cooling normally again. ------------------------------ Submitted on 2007 May 6 [6:09:06]