1. declare sun1=sphere{

<0,0,0>, 1

  texture{
  
   pigment{
    // mapps an image on the xy plane
    // from <0,0,0> to <1,1,0>
    // (aspect ratio 1:1)

uv_mapping

image_map {

png "blue_sun_map.png"

map_type 0 // 0=planar, 1=spherical, 2=cylindrical, 5=torus interpolate 2// 0=none, 1=linear, 2=bilinear, 4=normalized distance once // }

     } // end of image_map, end of pigment

finish {

ambient 2 }// end of finish

 //   scale 2 translate<-1,-1,0>
 } 
    // end of texture
 
 /*
 media {
 
 }
 */
 

} ;

1. declare kromos1=difference

{ sphere {0,1.025} sphere {0,1.0001}

/*

  pigment {color rgbf <0,0,1,0.5>}
   finish {
    emission 1
    } 

• /

pigment { color rgbf 1 }

 hollow
 interior {
   media {
     emission  5
     method 2
     intervals 1
     samples 5, 5

     density {
       spherical
       color_map {
         [ 0.0 rgbf <0,0,0.05,1> ]
         [ 0.2 rgbf <0.0, 0.0, 0.2,1> ]
         [ 0.4 rgbf <0.0, 0.0, 0.5,1> ]
         [ 1.0 rgbf <0.0, 0.0, 1.0,1> ]
       }
     }
   }
   
   media {
     absorption 1
     method 1
     intervals 1
     samples 5, 5
     density {
       spherical
       color_map {
         [ 0.0 rgb 1.0 ]
         [ 0.1 rgb 1.0 ]
         [ 1.0 rgb 1.0 ]
       }
     }
   }
 
 }
 
 

};

1. declare korona1=difference

{ sphere {0,1.5} sphere {0,1.026}

pigment { color rgbf 1 }

 hollow
 interior {
   media {
     emission 0.1
     method 3
     intervals 1
     samples 5, 5

     density {
       spherical
       turbulence 0.2

       color_map {
               [ 0.0 rgbf <0.01,0.01,0.1,1>]

[ 0.25 rgbf <0.2, 0.2, 0.2,1> ] [ 0.5 rgbf <0.4, 0.4, 0.4,1> ] [ 1.0 rgbf <1.0, 1.0, 1.0,1.0> ]

}

     }
   }
 }
 

};

1. declare star1=union {

object { sun1 }

object { kromos1 }

object { korona1 }

}

object { star1 scale 15 }