MDM Trouble Report for 2017 Jun 29 Telescope: 2.4m Observer(s): Ruth Angus & Dan Foreman-Mackey (Columbia) Instrument: modspec+echelle Problem(s) Encountered: By our fault entirely, we attempted to point at a target below the horizon and the TCS entered some sort of safe-mode. The telescope was pointing horizontally at the control room, leaking liquid nitrogen, and the TCS wouldn't turn back on. It was early enough that we could get Eric on the phone and he talked us through regaining control - we had to hold down Start while using the paddle to point to zenith. After that, it took some fiddling to regain pointing, but we got it eventually. Then, we parked the telescope, topped off the dewar, and continued our program without any problems for the rest of the night. ------------------------------ Submitted on 2017 Jun 30 [4:54:29]