As I have built my planet in Celestia, I have recently been playing around with the Rayleigh and Mie scattering and have looked at Friger's post on the subject at Celestia Matters, as well as other websites after an internet search, so I understand the scattering as far as it gives the sky it's color, and have played around with values to see what effect they have, so I'm able to get the kind of coloring and effects I want, however, I have no clue as to how realistic my sky color is--a sort of rosy sulfuric yellow is what I've always had in mind. If there is no blue light coming in, am I correct to conclude that an oxygen, nitrogen, and water vapor atmosphere will have no blue light to scatter (and from my nascent understanding Rayleigh scattering isn't entirely applicable), so my Rayleigh value for blue should remain at 0? Or is copying the Earth's scattering parameters from the solarsys.ssc file at better option? I did try that, but I'm thinking that like most of Celestia, scattering is rendered from the Red-Green-Blue values and is independent from the solar light source, and that one can create all sorts of impossibilities.
Code: Select all
Rayleigh [ 0.0041 0.0017 0.00001 ]
Absorption [ 0 0 0 ]
These are the values that I'm using. I does give me a blue sunrise/sunset, so would there be a plausible atmospheric phenomenon to cause that (I know about Mars' sunsets), or should I play around with the absorbtion values to get rid of it. I've striving more for realism than flight of fancy. I am aware of a 1/lambda^4 ratio from the Celestia Matters thread, but have no idea how it should be implemented.
That's pretty much it: blue? Some blue? Or no blue?