MDM Trouble Report for 2021 Jul 08

Telescope: 1.3m
Observer(s): Donghoon Son (SNU)
Instrument: Templeton

Problem(s) Encountered:
At ~3am, slew error had occurred when I tried to move to Az~88, Alt~51.
After that, TCS and JSkyCalc could not control the telescope. 

 Slew ERROR  with tracking OFF

When I tried to move to Zenith,
 ERROR point not converging dist=39.875 dra=319.111 ddec=20.856 

When I tried to close mirror cover,
 ERROR mirror mirror both open and closed 

The 2.4m observer tried to solve the problem from 4:30, but failed.

Fortunately dome closed well, but we could not stow the telescope to Zenith.

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Submitted on 2021 Jul 9 [5:36:51]