[AZ-Observing] Seeing again

     Tonight the wind dropped not long before sunset:

    Time  T(F)  RH   DewP  Wind
    6 pm  67.3  26%  31.3  11 WSW
    7 pm  64.6  27%  29.9   7 WSW
    8 pm  59.7  27%  25.8   4   W
    9 pm  56.8  30%  25.8   3   W

...and now that it's dark, the naked-eye scintillation is "usual",
i.e. moderate amplitude and speed.  Yet the turbulence forecast models...

http://www.rap.ucar.edu/projects/itfa/turbfc1.html
http://www-frd.fsl.noaa.gov/mab/tke/tke_new.cgi

..and the 'Clear Sky Clock' all show northern AZ to have moderate-to-strong
turbulence/poor seeing for at least the first half of the night.
     And guess what:  the observer at the 72-inch reports "rotten" seeing.
The seing is worse than last night, the very twinkly night that Steve
was complaining about.  The 72-inch has 19 _meters_ focal length, so is
pretty sensitive to seeing, but I don't see anything unusual in LONEOS
images (2".5 per pixel), and it looks fine in my little Pronto, which I
happen to have out looking at some red stars.

\Brian
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