MDM Observatory 2.4m Telescope Observer's Report for 2007 Sep 20

Observer(s): Sebastien Lepine
Institution(s): AMNH

Instrument: Direct + Echelle

Worked for 10 hours (all night)
Conditions were Non-Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 0.9 arcsec, Clear, Winds Light & Variable
   Mid: Seeing 1.4 arcsec, Clear, Winds Moderate
   End: Seeing 1.0 arcsec, Cirrus, Winds Light & Variable

Observing Summary:

Some rain fell in late afternoon and there were clouds
almost right up until sunset, but then a miracle happened
and it all cleared up. The seeing was subarcsecond in the
first hours of the night, but then stronger winds came to 
shake things a bit and the seeing degraded some. It didn't
last for too long, however, and the seeing crawled back 
to about 1.0 arcsec.

The dome encoder was off by 10 degrees at closing. I suspect
this occured after one particular pointing, which drifted very
close to the zenith, probably confusing the system.

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Submitted on 2007 Sep 21 [6:27:14]