Night Log 2012-05-18

SA: Alexei
SO: Fred
Others:

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Summary
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=> Heavy clouds and high humidity.
No observations tonight.

=> Also have problems with tracker. The investigation was done by stand-by
with conclusion that with very high probability the Y-gear box clutch slips.
The motor has to be tested in the lab. The day crew will start to unmount
and test it in the morning.