I'm sure this question has already been answered, but I couldn't find anything
specifically related to the image_map

I'm trying to map a the following JPG to a sphere using of course a spherical
map.

http://www.shawnrinehart.com/images/man/ManMapsJpegs/1000_eye.jpg

The code is as follows

#declare t_eye=
  texture {
    pigment {
      image_map {
        png "1000_eye.png"
        map_type 1

      }
    }
    finish { ambient 0.3 }
}


sphere{ 0, 1 texture{t_eye} rotate y*90}


No matter what types of items I try, I can't get it right (x-axis is too long)

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