MDM Observatory 2.4m Telescope Observer's Report for 2007 Sep 24

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 1.2 arcsec, Patchy Clouds, Winds Calm
   Mid: Seeing 0.7 arcsec, Clear, Winds Calm
   End: Seeing 0.7 arcsec, Clear, Winds Calm

Observing Summary:

Excellent night for parallax. Moderately good
seeing at first, but then things got exciting. A band of 
patchy clouds flew in late in the evening, seemingly 
ruining things for about half an hour. In their wake,
however, was a perfectly still atmosphere, yielding 
an amazing seeing of 0.7 arcsec which persisted 
almost till dawn (and at times went as low as 0.6 arcsec).

This was the last night of our observing run. Lost two 
to bad weather, but somehow managed to hit most stars 
on the main target list.

As always, thanks to the staff for their outstanding 
support.

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Submitted on 2007 Sep 25 [6:33:55]