I think Mike means ShadersPlus. I'm not exactly sure what you are trying to achieve. The image I posted does not 'glow' because the glow channel has such a small amount of colour in it. Agreed there should be a shadow on the atmosphere. This is easy to achieve using Julien Chaplier's Baker plugin - you make a light map and stick that in the glow channel. Perhaps a texture map will produce the effect you are after but unless you give a few more details I can't make any more suggestions. Mark