MDM Trouble Report for 2017 Dec 20

Telescope: 2.4m
Observer(s): Weil, Fesen, Gasque, Sosanya (Dartmouth)
Instrument: OSMOS/B

Problem(s) Encountered:
Toward the beginning of the night the dome ran away while 
observing. The telescope was pointed at RA=07:36:51.5 
DEC=+65:36:07 at hour angle -3:13. The telescope AZ was 26.2 deg 
and when the dome began to move to catch up to the telescope 
it went through the telescope azimuth position to 140.6 degrees
before turning around and making it back to the correct position.

Later on the night, the TCS froze, freezing the entire computer 
handling the TCS, guider, and TCS sub-guis. After searching for 
TCS computer, we hit the yellow button, that we think is the
reset button. After hitting the yellow button, the computer
restarted. We then restarted the TCS, the guider, the guider
focus gui. We found that there was not a single place to find the
information regarding the procedure to restart all of these windows.
When the computer froze, it was a completely silent freeze during a
long exposure. The telescope drive and tracking continued but we could
not access any of the guis on the screen. We were not near any telescope
limits when this crash occurred. 

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Submitted on 2017 Dec 21 [6:26:39]