Gail Shaw wrote:
> 
> I decided I needed some atmospheric effects for my
> irtc entry (which I will post once it's more than a few cylinders
> and cones)
> 
> This is supposed to be the aurora borealis.  It's an isosurface
> containing media with a function used in the density.
> 
> For those who live far enough north to see the real thing, does
> it look right?

Here's a Norwegian "Northern-light picture of the month" page:

http://www.northern-lights.no/zope//Contest/Gallery/

The above link takes you to the photos of the current month, but 
you can choose to view a lot of photos from prior months as well.

You'll probably notice that northern-lights comes in a great 
variety of "shapes" and colours.


-- 
Best regards,

Tor Olav

mailto:tor### [at] hotmailcom
http://hjem.sol.no/t-o-k/tokpicts.html
http://www.crosswinds.net/~tok

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