MDM Trouble Report for 2004 Dec 2

Telescope: 2.4m
Observer(s): Diane Paulson (Michigan)
Instrument: 8k

Problem(s) Encountered:
1) Two of the chips have unusual responses tonight. When 
I look at the initial display in ds9, if the chips are 
numbered 1234   then chips 4 and 6 are troubled. When I take
         8765    
short exposures (few minutes or less) then these chips have 
too high of a background (approaches saturation within 2 
minutes). When I integrate for 10+ minutes the background 
levels are normal. The flats and biases from the beginning 
of the night are fine.

2) The telescope was slowly drifting to the southeast 
during the night and became progressively worse during the
night. The telescope suddenly jumped at around 12:20-1am 
(possibly coincident with the change of focus of the guider- 
see #3 below). It offset by at least 10 arcminutes! 

3) I was able to focus the  finder  (or  #1 ) camera but was 
unable to focus the other camera. The knob to change the focus 
for camera #2 seemed a little loose. The focus of #1 was lost 
at about 1am. It seems to have slipped positions, because the 
telescope focus was unchanged. I had to refocus after this slip.

4) Please fill the big dewar. It is running low. Thanks.

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Submitted on 2004 Dec 3 [3:43:55]