MDM Trouble Report for 2004 Dec 5

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

Problem(s) Encountered:
I noticed yesterday that the vacuum was not holding for 14
hours as it had the previous nights. The pressure was
up to about 15 mTorr after 14 hours. I cooled it down and 
topped it off 2 hours afterward. When I got up to fill it 
12 hours later, it had gone back up to 20 mTorr! I again 
cooled it down. I am doing a fill each 8 hours just to be 
sure. Can you check the vacuum or possibly pump it down again
so that it holds for 12+ hours so that I don't have to 
interrupt any observing (weather permitting) to fill?
Thanks!

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

Submitted on 2004 Dec 6 [0:19:58]