In article <web.3f216b4dce8953885c46d5e30@news.povray.org>,
 "Penners" <pen### [at] hotmailcom> wrote:

>  This is exactly what I mean.  Is there somewhere you could point me to
> learn more about this scattering phenomenon and/or a scattering model that
> defines it...out of curiosity.

A simple Google search shows some possibilities:

http://www.google.com/search?q=scattering+ice+crystal+halo+22

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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