[AZ-Observing] Re: Sunspot Group Near Meridian
- From: Valerie Vance-Goff <goffaxe@xxxxxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Mon, 13 Aug 2001 14:37:26 -0700
At 11:19 AM 08/13/2001 -0700, you wrote:
>>After about 10,000 hours of Solar observing, I have found that generally
>>the images deteriorate greatly after about 10 in the morning.
>
>
>I have heard Paul Maxson say the same thing. The bad news, then,
>is that during the season in low-desert Arizona when it is actually
>comfortable to be out in the sun, we're stuck with observing it when
>it is at a low altitude.
Tom,
This applies to virtually every site from which I have observed. The
phenomenon known as insolation causes increasing turbulence as the day
progresses. Ir is the rear day when the best seeing is during the
afternoon, but it does happen.
As to the price of the L-O filter, The stainless steel screws that hold it
togather cost more than $30. The active parts are of Quartz and Calcite.
Bob
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AXE* (*Astronomically Xenogenic Enterprises)
P.O. Box 14045
Tucson, AZ 85732-4045
USA
Voice 520.745.3024
Fax 520.745.0206
<http://www.axeoptics.com>
<owners@xxxxxxxxxxxxx>
^^Reach for the stars; the stretch will do you good!^^
***
Proud members of the Arizona Optics Industry Association
<http://www.aoia.org>
WRC
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