MDM Trouble Report for 2012 Aug 24

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

Problem(s) Encountered:
Had some moisture on the detector, so I started the afternoon, 
around 5 pm,  by taking 5 to 7 minute long 
exposures (with dome closed and mirror covers down to reduce the 
light) to dry the detector.  By the time I took twilight flats,
the circlular effect caused by moisture had gone.  
The moon was 58% illuminated.  I am not
sure why but all night (even after the moon set) I had saturation
for a full exposure in i band, some of the night I had saturation
in the r band and the g band seemed to be ok (although I only tried it
after the moon set).  I tried a few things (changed fields, changed
filter, restarted IC, restarted IC and IE (just in case)), but by 
midnight I gave up trying to fix the problem and observed with
full exposures (7 minutes) for g and r and several shorter exposures
(7 200-second exposures) for i. 

Not sure if it is related but the full ccd readout time is really fast, 
less than 5 seconds.  Seems too fast to me.

And completely unrelated, the in button to focus on the slew inside 
the control room sticks.  I used the in button on the slew attached 
to the telescope in the dome.

Also, with the other issues I had tonight, I am not sure I trust the 
seeing measurements I got.

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Submitted on 2012 Aug 25 [5:48:33]