While looking round the Virtual Terrain Project site today I came across a paper on a method of rendering Planetary Atmospheres which might be of interest.
http://www.vis.uni-stuttgart.de/~schafhts/HomePage/pubs/wscg07-schafhitzel.pdf
Regards to you.
Cyber-Angel
ah all those equations make me sick....
Very interesting read - thanks, C.A. :)
Thanks, C-A. I've set this aside for future reading.