MDM Observatory 1.3m Telescope Observing Report for 2009 Aug 26

Observer(s): Terndrup
Institution(s): Ohio State / NSF

Instrument: 4K

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 1.5 arcsec, Patchy Clouds, Winds Light & Variable
   Mid: Seeing 1.4 arcsec, Clear, Winds Light & Variable
   End: Seeing 1.3 arcsec, Clear, Winds Light & Variable

Observing Summary:

Stellar rotation in open clusters.

This was a very good night.  On two occasions, I experienced the telescope oscillation
that plagued my run last June.  Compared to then, tonight's problems were much
smaller in amplitude and much less frequent.  I was unable to cause it to happen, and
it did not seem to depend on where I was pointing.  I will explore this further during
the run, and if I discover something I will put it in a trouble report.  It went away if
I moved the telescope a degree or so and then reacquired the target.

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Submitted on 2009 Aug 27 [5:07:35]