MDM Trouble Report for 2020 Nov 19

Telescope: 1.3m
Observer(s): Yuming Fu, Jiangtao Li (PKU, UMich)
Instrument: CCDS

Problem(s) Encountered:
After taking a list of Xe lamp spectra, I clicked the finder  out  and
the  Xe  button (to turn off the lamp) on the MIS xmis2 panel. 
This led to the wrong message
 finder mirror = Xe  instead of  finder mirror = out . Then I checked 
the status of finder by targeting a standard star with the telescope 
and moving the guider probe to a bright star, but neither guider camera 
nor slit viewer showed stars. I tried cycling finder  in  and  out  a 
few times, and restarted the MIS xmis2. Later the guider camera could
see some stars but with possible obscuration. The slit viewer still
could not see stars. It seemed that the finder was not in the right 
place. I homed the telescope and closed the dome at mid-night.


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Submitted on 2020 Nov 20 [6:34:02]