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The most common in our area are streaks of paint upwards on a pale green
background, but I certainly haven't seen all possible variations...
One thing struck me about the overall attempt to render an aurora: I bet
you could submit a photograph of the real thing and a lot of people would
say it didn't look very realistic... because it doesn't :-)
BTW, I spent a few minutes going over the site below to see *all* the
pictures. The animations (time-lapse photography, not rendered) are
awesome. Well worth the visit.
http://www.ptialaska.net/~hutch/aurora.html
"Geoff Wedig" <wed### [at] darwin epbi cwru edu> wrote in message
news:3ac0d7b3@news.povray.org...
> Gail Shaw <gsh### [at] monotix co za> wrote:
>
> > Now using multiple sine waves with different frequencies,
> > amplitudes and phase. (Thanks Christoph)
>
> > The color is also varied slightly.
>
> Reminds me of the opening credits to Superman: The Movie. ;)
>
> It looks too straight to me. The pictures I've seen are more like swirls
of
> lit up mist with tendrils all throughout. This looks more like a paint
line
> streaked upwards. Not sure what method would either fix this or to offer
> that might work better, I'm afraid, but keep trying. It'll be really cool
> if you get it to work.
>
> Geoff
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