MDM Observatory 2.4m Telescope Observing Report for 2012 Oct 07

Observer(s): De Rosa, Fausnaugh
Institution(s): OSU

Instrument: OSMOS

Worked for 9 hours (all night)
Conditions were Non-Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 1.4 arcsec, Cirrus, Winds Calm
   Mid: Seeing 1.2 arcsec, Clear, Winds Calm
   End: Seeing 1.2 arcsec, Clear, Winds Calm

Observing Summary:

We had a good night of observations.
A few clouds at the beginning of the night, but it cleared up 
fairly soon. Prospero behaved, and we did not have any major 
problem. We noticed that after slewing the telescope, the PSF looks 
slightly triangular. The effect usually lasts a few seconds. 
While moving from dec -05:09 to dec +20:12 (HA between 0 and 1, 
airmass from 1.3 to 1) though, the effect was more persistent: 
~60 sec. We don't know if this is expected, so we prefer to note 
it down. 

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Submitted on 2012 Oct 8 [6:40:52]