MDM Trouble Report for 2012 Jul 05

Telescope: 2.4m
Observer(s): Rhiannon Griffin, Jenna Nugent (University of Oklahoma)
Instrument: OSMOS

Problem(s) Encountered:
We had a few issues pop up tonight.

1.  While taking dome flats there seemed to be water or 
condensation on the primary mirror or some of the equipment since
we observed a weird circular effect in the middle of our images.
When we went to observe a few hours later, this effect was no
longer there

2. While taking dome flats, we had issues changing the filter. 
In the pr window, there was an error:
ERROR: FILTER1 FILTER1=3 Move Fault, position at end of move 3 but
requested position 2
Error setting the Filter1
Programming Error: invalid error code:  -99

Typing 'filter1 reset' fixed the issue (found in the OSMOS manual)

3.  When we started to fill the dewar, the tube connected to the
nitrogen tank expanded like a balloon (for about 8 inches or so).
We were able to fill the dewar and disconnect the hose without
issues.  We did not fill the dewar in the morning, waiting on a 
tube replacement

4. We had issues with pointing, due to some user error and due
 to the tiltmeters not being exact/ zenith being off.  There
was also some confusion since the Guide Star Selector North/East
directions are not the same as the telescope slew north or as ds9
north. We established pointing and after stowing the telescope found that 
zenith was about +0.11,.12 for X and +0.04 for Y (not quite what
the post it note says in the control room).  Moonlit clouds also
didn't help since the sky was off and on partly/mostly cloudy.

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Submitted on 2012 Jul 6 [4:47:32]
NOTE: This trouble report replaces the previous report for 2012 Jul 05