MDM Trouble Report for 2008 Sep 12

Telescope: 2.4m
Observer(s): Stoll and Yee (OSU)
Instrument: TIFKAM

Problem(s) Encountered:
The major problem occurred at around 10:33 UT.  There began to be
a significant drift in RA, as if the tracking was not quite 
keeping up, and the guiding was unable to compensate.  The buttons
on the hand paddle were not stuck, as has been known to happen; 
in fact, the telescope was not responding to motion commands from 
the hand paddle at all.  TCS monitor read,  Dec Encoders not 
responding .  Problem was eventually resolved by returning to 
zenith, doing a partial shutdown, and restarting the TCS 
computer.  (Things that had not worked included toggling tracking
on and off and resetting the RA/Dec encoders.)

Problems that did not have a negative impact on our ability to
take data:

-When initializing xims after a lightning shutdown something in
the MIS made a continuous rattling noise.  Reinitializing xmis
solved the problem.

-Had same IC synch problem as last night with an exposure that
gets stuck in the writing process.  Resolved with new 
IC-to-Caliban transfer disk error recovery procedure.  Have
encountered this twice in a row after lightning shutdown.  
Perhaps a symptom of order in which we brought things back up 
from shutdown?  Followed order in Aug 25th, 2008 document.

-Internet went down around 11 pm.  We are unable to submit the 
observing and trouble reports.

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Submitted on 2008 Sep 12 [4:57:04]