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[AZ-Observing] Re: Sub-arcsec seeing on Anderson Mesa
- From: Tom Polakis <tpolakis@xxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Thu, 10 Mar 2005 17:51:01 -0500
Here's an interesting polar plot that shows seeing versus wind direction.
Northerly and easterly components are generally bad for seeing. Southwest is
the most common, and it's good.
http://www.lowell.edu/Research/NGLTbak/giffiles/t.gif
> But it is now closing to down around 0".65, so in the Pronto it was
> not any more than "maybe oval", even at 250x(!).
That requies a 2mm eyepiece in a Pronto! 10mm eyepiece and a 5x Powermate? I
once looked through my Pronto at 500x using a 4.8mm Nagler and the Powermate.
It was the largest perfect star disc I had ever seen, with an apparent size of
about half that of the Full Moon.
Tom
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