MDM Observatory 2.4m Telescope Observing Report for 2011 Dec 30

Observer(s): Hsu
Institution(s): Michigan

Instrument: OSMOS + 'blue'4k

Worked for 11 hours (all night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 1.6 arcsec, Clear, Winds Calm
   Mid: Seeing 2 arcsec, Clear, Winds Calm
   End: Clear, Winds Calm

Observing Summary:

Observed spectra of YSOs in Orion. The weather was great. 

The guider problem has improved, but is not completely fixed. 

I was able to focus the guider camera in the beginning of the 
night, but the guider camera progressively become more and more 
out of focus throughout the night. Since the temperature didn't
change much, the focus should not have changed so significantly. 
I wonder if the guider camera was not very well mounted and
was sliding when the telescope moves.

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Submitted on 2011 Dec 31 [6:58:44]