MDM Trouble Report for 2018 Mar 20

Telescope: 2.4m
Observer(s): Weil & Yan (Dartmouth)
Instrument: OSMOS/B

Problem(s) Encountered:
Telescope appears to have jumped in DEC during a long exposure.
Guiding was not lost during the exposure but all the stars
were doubled. Happened when the telescope was between HA=-1:40
and HA=-1:20 at about 11:30pm local time. Repeated the 
observation and the problem did not occur again for the 
rest of night. 

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Submitted on 2018 Mar 21 [5:33:47]