[sac-forum] Re: Puzzling Phenomenon
- From: "Robert Parks" <rparks@xxxxxxxxxxxxxxxxx>
- To: <sac-forum@xxxxxxxxxxxxx>
- Date: Fri, 5 Feb 2010 12:21:01 -0700
Happens every time you are in line with the sun & shadow.
We work hard to keep it from happening in our photogrammetry aerial
photos by watching the sun angle during the flight. In a phoenix summer
this means flying very early, to keep the sun angle below 30 degrees.
Some times called a sun dog or glory.
http://www.weatherquesting.com/glory.htm
Thanks,
Robert G. Parks
Vice President
Aerial Mapping Company, Inc.
602-263-5728 voice
602-263-0165 fax
602-432-6627 cell
--- Begin Message ---
- From: "Howard C. Anderson" <handy13@xxxxxxxxxxxxxx>
- To: <sac-forum@xxxxxxxxxxxxx>
- Date: Fri, 5 Feb 2010 12:09:12 -0700
Hi,
I encountered a puzzling phenomenon on a flight from Phoenix to Atlanta
and recorded it on video: http://www.astroshow.com/Puzzle/Puzzle.html
Bright spot on the ground that moved as the plane moved. Spot, aircraft,
and the sun were on the same straight line. Either a diffraction effect
caused
by aircraft's disturbance of the density of the air, simple specular
reflection, or something
else? Nothing I've thought of satisfies me regarding the cause.
Would appreciate thoughts from anyone who might know the cause
or is willing to speculate.
--
Thanks,
Howard, in Tempe AZ
Http://www.astroshow.com
http://www.AZcendant.com
http://www.ShastaDaylight.com
--- End Message ---
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