MDM Trouble Report for 2013 Mar 18

Telescope: 2.4m
Observer(s): Jacob brown, Marat Musin (University of Missouri Columbia)
Instrument: OSMOS

Problem(s) Encountered:
At the beginning of the night, we had an issue with the pointing. 
The telescope was off a significant amount that caused the bright 
stars we went to not to show up in the roi4k at all. At first we 
were not sure this was due to the clouds or the pointing. Once we 
determined the pointing was off we pointed to the zenith to 
recover pointing as said in the manual. After doing the steps in 
the manual, we successfully recovered pointing and we able to 
move on. We lost about 1 1/2 hours to this mainly because at the 
time it was partially cloudy and interfering with trying to find 
stars to do the pointing with in the first place. 

Earlier in the day Eric changed the tracking on the RA to see if
he could improve on the tracking conditions. After the pointing
issue we changed the tracking rate to the value from the previous
night to make sure we wouldn't have the same problem again.

Another issue that popped up again last night was on a few 
exposures, the guide star would start moving around in the 
window very erratically and either start doing a 
counter-clockwise rotation or once it left the field completely
and the guider switched to another guide star half way through
the exposure. When this happen it normally ruined the exposure 
and had to be retaken. I have left the graph for the last star
we used for guiding up on the guider screen so the 2.4 support
staff can take a quick look at to see the error in the x and y.


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Submitted on 2013 Mar 19 [6:52:49]