MDM Trouble Report for 2011 Jan 17 Telescope: 2.4m Observer(s): Jackie Faherty and Sebastien Lepine (American Museum of Natural History) Instrument: Nellie Problem(s) Encountered: We had an issue with the TCS where it froze as the telescope was slewing. We were moving from a position close to zenith to a southern target (at +11 dec). The telescope continued past the target without stopping and then turned off as it reached the limits. We then tried to re-adjust back to the zenith manually but the TCS was frozen so we had to re-boot the TCS computer completely (following the lightning shut-down procedure through the TCS shutdown step). After we restarted everything worked fine with the TCS for the rest of the evening. ------------------------------ Submitted on 2011 Jan 18 [7:45:05]