MDM Trouble Report for 2015 Dec 26

Telescope: 2.4m
Observer(s): Y. Jeon, Y.-K. Sheen, D. Park (Seoul National Univsersity)
Instrument: OSMOS/B

Problem(s) Encountered:
 Disperser times out  problem. 
 
During the night, the disperser showed problems every time 
when we changed the disperser wheel
from Blue (#1) to Open (#2).
We encountered this problem about 8 times until 2AM and 
we could solve the problems 
following the troubleshooting in manual. 

However, after 2pm, 
turning off the IE and restarting Prospero did not help anymore. 
We turned down IC and it seemed to solve the problem. 
However, again, the disp shows the same problem. 

We tried same procedure again, again, and again, 
and finally gave up. I'm not sure we can observe tomorrow.  

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Submitted on 2015 Dec 27 [5:05:50]