MDM Trouble Report for 2008 Feb 11

Telescope: 2.4m
Observer(s): Nathan Crockett (University of Michigan)
Instrument: 8K

Problem(s) Encountered:
When observing on the previous night (beginning on 9 Feb), while
shutting down I had to manually move the dome to home (dome AZ 
misaligned). This happened b/c I turned something off that 
forced the dome to stop before it reached home. I did not 
realize that I had to reset the dome AZ encoder until I opened 
yesterday (Feb. 10) when the dome slit did not align with the 
telescope.

I reset the dome encoder using xtcs (put dome at home position 
and set it at 320 deg). The dome slit appeared to be aligned 
while I was observing but when I shut down for the day 
(today Feb 11), the dome was still slightly misaligned and I 
had to manually put the dome to home again and reset the dome 
encoder again. This wasn't really a problem I guess, I just 
wanted to make the staff aware of what happened.

I also noticed increased noise on chip 4 of the 8K detector 
(the one adjacent to the dead chip; long streaks of elevated
counts). Not sure if there is a known cause for this or if 
that chip acts up from time to time.

------------------------------

Submitted on 2008 Feb 11 [7:44:25]