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] darwinepbicwruedu> wrote in message
news:3ac0d7b3@news.povray.org...
> Gail Shaw <gsh### [at] monotixcoza> 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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