MDM Observatory 1.3m Telescope Observing Report for 2020 Feb 19

Observer(s): Yuming Fu
Institution(s): PKU

Instrument: CCDS

Worked for 11 hours (all night)
Conditions were Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Beg: Seeing 2.1 arcsec, Clear, Winds Calm
   Mid: Seeing 2.3 arcsec, Clear, Winds Calm
   End: Seeing 2.3 arcsec, Clear, Winds Calm

Observing Summary:

Dome opened at 18:38. Seeing ~2.1'' when observation started. The observation
went well overall, though  Slew error  and losing tracking sometimes. Re-excuting
the slewing and turning on the tracking solved the problem.
Sky flat finished at ~ 06:40. Error  pointing not converging  happend after 
excuting  point ha=0 dec=31:57:12 nodome . Home button didn't work with
error  ERROR where m_ha not homed . Mirror closed but dome wouldn't.
I used  home force ha  command (which is not correct) to get avoid of the 
error and closed the dome. Failed to bring the telescope back to zenith and 
it got stuck at ra~14:55, dec~31:57 for some time. Offset the telescope with
commands but made it tilted too much. 
Finally Eric came and made everything OK.
See the trouble report for details.


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Submitted on 2020 Feb 21 [22:25:22]