MDM Trouble Report for 2004 Oct 12

Telescope: 2.4m
Observer(s): Frank (OSU)
Instrument: CCDS

Problem(s) Encountered:
Crash of IC and WC around midnight : error message on screen ->  asynchronous
memory fault .
After several attempts of rebooting, success following Jen Marshall's online trouble shooting procedure -> however : still unsatisfactory 
synchronisation between IC and WC (cf. red flags on propsero status).

Shift in grating discovered after start-up procedure of prospero -> fixed without 
problem.

Shortly afterwards : at first slight pointing irregularities, then loss
of tracking. Error message  DEC encoder not responding  on screen when
attempting to slew with hand-paddle. Several attempts of turning tracking
off and on finally restored the old status, however, then both slit-viewer and guider
camera severely out of focus.

When finally ready again to observe, clouds came moving in - and forced long observations 
of 'western objects' (as fewer clouds there). 
 
Red part of CCD seems to work now - although at times the formerly 'dead' region shows
unusual features (faint double line, 'fuzzy' patches).

Both guider and slit viewer cameras and screens worked very well.

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Submitted on 2004 Oct 12 [7:18:20]