MDM Trouble Report for 2016 Aug 06 Telescope: 2.4m Observer(s): Yiseul Jeon, Donghoon Son (Seoul National University) Instrument: OSMOS/B Problem(s) Encountered: The rotator did not work: When we tried to rotate the instrument, the buttons in the hand paddle in the dome and the rotator GUI did not work both. As the manual says (http://www.astronomy.ohio-state.edu/~martini/osmos/rotator.html), we turn off and on the rotator electronics box and it worked. ------------------------------ Submitted on 2016 Aug 7 [5:50:10]