MDM Trouble Report for 2016 Aug 05

Telescope: 2.4m
Observer(s): Yiseul Jeon, Donghoon Son (Seoul National University)
Instrument: OSMOS/B

Problem(s) Encountered:
We encountered this problem 
when I opened the 2.4m dome around 11PM:
All of the mirror covers failed to open.

I found two possible solutions. 

1) Changing COMPRESSOR/CYLINDER valve
I found this in the 2.4m manual ( http://mdm.kpno.noao.edu/24_manual/hilt09.html ).
But it seems that I was not allowed to do this. 

2) Clearing a hung up mirror cover petal 
I found this from the trouble reports: 2.4m, Closing Mirror Covers
http://mdm.kpno.noao.edu/index/Trouble.html
But I don't know I can do this or not because
I am afraid to take the risk of injuries (how much dangerous is it?) 
as the solution mentioned. 

So, we could not solve this problem. 
I figure that none of the staffs will go up to the mountain during weekend. 
Please let me know what can I do to fix this. 



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Submitted on 2016 Aug 6 [4:47:36]