MDM Trouble Report for 2013 Jan 11

Telescope: 1.3m
Observer(s): R. Mark Wagner (OSU)
Instrument: MDM4K

Problem(s) Encountered:
I would like to report unauthorized or spurious motion of the 1.3 m telescope.
As I summarized in the night report for this night, the LN2 fill line snapped 
while filling the dewar.  I found that the telescope had moved about 3 deg
north in declination while filling which caused the snap.  THis afternoon I
filled the dewar with the interlock enabled and there was no problem.  However,
when I disabled the interlock the telescope started moving north in declination
right away.  The rate was about 2-3 arcmin per 10 seconds.  Observers
should exercise caution and be aware of this problem.  Also, all LN2 fills 
should be done with the interlock enabled.

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Submitted on 2013 Jan 13 [2:30:01]