MDM Trouble Report for 2016 Dec 01 Telescope: 2.4m Observer(s): Douglas, Nunez (Columbia Unviersity) Instrument: ModSpec/Echelle Problem(s) Encountered: After taking a break to let the clouds clear somewhat, we attempted to start up again. When we did, the West mirror cover petal did not open, though we could hear it trying. We slewed as far as we could to the W and a bit N to see if we could open it by gravity, which didn't work, so we used the rope to pull it open. It opened far more gently than it usually does, and when we attempted to slew over to a new target, it immediately closed itself again. We went back to zenith, closed all the mirror covers, left them alone for 30 minutes while another cloud went over, and then tried to re-open again. The west mirror cover petal still will not open, so we're calling it a night. Also, the west cover petal closed while the rotator was at a non-zero value, so it's still there since we couldn't get the mirror cover open again to rotate back to 0. ------------------------------ Submitted on 2016 Dec 2 [3:29:58]