MDM Trouble Report for 2006 Sep 15

Telescope: 2.4m
Observer(s): Jana Grcevich (University of Michigan)
Instrument: 8K

Problem(s) Encountered:
Encountered several problems:

1. The pointing was fine, but just after entering coordinates the 
first pair of offsets were not measured from the original pointing.
Objects were on the same part of the chip if I went to the coordinates
and entered no offsets, or if I went to the coordinates and then
entered offsets of 281 150. Solved the problem by first entering 
the 281 150 offsets and then the offsets I wanted.

2. At roughly UT 9 I noticed the telescope RA and DEC were changing 
inappropriately. The  Next Object  hour angle was constantly 
changing. The TCS displayed the error  RA or DEC encoders 
not responding . I tried to reset the RA and DEC encoders, 
but the problem persisted. I restarted the TCS. Tracking worked
 normally after that.

3. After the TCS restarted, I had problems with the TV guider.
The stars seemed relatively stationary when I wasn't guiding. 
When I was guiding, the stars would move more rapidly and
move out of the guide target box. Once guiding stopped, the 
stars did not continue to move on the TV. I attempted to adjust
 the guide parameters, but the problem persisted.

Due to these problems, I closed early ~5am.

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Submitted on 2006 Sep 16 [4:45:05]