"Anthony D. Baye" <Sha### [at] spamnomorehotmailcom> schreef in bericht 
news:web.4dd623a47a330d5d9c4fb0ad0@news.povray.org...
> Just started this last night (That would be Wednesday for me).  It seems 
> to be
> coming along nicely, but I'm having a few problems.
>
> First, I like the starfield, but I'd like to have more color, possibly a 
> nebula,
> maybe a few close stars.

There is the galaxy.inc macro by Chris Colefax, though I am not sure where 
it resides nowadays... I have a copy if you want.

>
> Second, the planet.  It's supposed to have an atmosphere, but I can't seem 
> to
> get it to work.  The scale is 12 units to 100 meters or 3:25 scale, which 
> makes
> the gate roughly 6km across.  I'm currently looking at the gate, which is 
> in
> orbit around the planet at a distance of 35,768km

The following code is by Tek and creates a nice atmosphere:
//start code
  //atmosphere by Tek
  difference {
    sphere { 0, 21.1 }
    sphere { 0, 20.0 }
    hollow
    pigment { rgbt 1 }
    interior {
      media {
        scattering {
          1, rgb <0.05, 0.17, 0.3>*1
          extinction 1
        }
        density {
          function {exp( -(sqrt(x*x+y*y+z*z)-20)/4 )}
          density_map {
            [0 rgb 0.0]
            [1 rgb 0.1]
          }
        }
      }
    }
  }
//end code

Thomas

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