MDM Trouble Report for 2006 Apr 3

Telescope: 2.4m
Observer(s): Paul Martini (Ohio State)
Instrument: MDM8K

Problem(s) Encountered:
1) Chip 5 of the MDM8K has significant striping parallel to the 
detector rows. The amplitude of the stripes is approximately 
20 ADU rms. It is also not constant across a given row, the 
amplitude is simply less (7 ADU rms). The stripes appear in 
both object and bias frames and vary substantially from one 
exposure to the next. Chip 5 therefore appears to be unusable. 
The previous observer pointed this out to me on 31 March 2006 
and it has been present in every frame I have looked at.

2) Last night the tvguider stopped responding while I was 
entering the setup parameters. I tried x, q, etc. and got 
no response. I then hit Ctrl-Alt-Del and rebooted the computer. 
After this it worked fine. Incidently, the  reasonable
parameter values  in the MDM8K Basic Startup and Shutdown 
Procedures do not work. 

Minor points: 

3) The CCD temperature on detcon reads -422.7 deg. C. I have 
restarted it several times in the last few days and it has 
always read a comparably low number. 

4) The Granville-Phillips pressure display reads 0 mTorr. 

Web issues: 

5) The web page with the  Trouble Report Archive  does not 
include a link to trouble reports for 2006. 
(see http://mdm.kpno.noao.edu/Reports/Trouble/)

6) On the web page with a description of the MDM8K project 
(http://www.astro.columbia.edu/~arlin/MDM8K/description.html), 
none of the links under the subheading  The Guider  are active.
There is also a dead link to chichon.kpno.noao.edu.

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Submitted on 2006 Apr 3 [4:57:22]