MDM Trouble Report for 2021 Oct 13

Telescope: 2.4m
Observer(s): Aylin Garcia Soto, Keighley Rockcliffe (Dartmouth College)
Instrument: OSMOS

Problem(s) Encountered:
At some point in the night the MIS GUI stopped moving the guide probe to the correct X and Y coordinates, most likely around 1:39 am (I had a lot of issue finding the guide star/given that the probe isn't moving probably means that guidestar that the telescope was tracking was wrong). A theory is that I hit the limits of the guide probe (not the telescope, it didn't pass 1.2 airmasses and it was easy to stow back). I tried resetting the MIS GUI, by quitting the GUI and switching off the controller in the control room. But the problem didn't go away when I restarted it. I also tried to send the guide probe to the origin but it won't move past Probe X 1448 and Probe Y 7806. I get a warning  WARNING: Not at Y CCW Limit.  Also typing X = 0 and Y = 0 doesn't move the probe to beyond Probe X 1448 and Probe Y 7806. Seems like there was a similar issue July 29, 2019 and the conclusion was that it could be the sensor? Not sure. 

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Submitted on 2021 Oct 14 [4:54:38]