Warp <war### [at] tagpovrayorg> wrote:
>   I didn't see him using an image map for his "sky sphere". His stated
> purpose was to use something else than black as the background color.

Right, but the issues I described may be a good reason of making it a habit to
use true spheres instead of sky spheres.

In *this* particular case, you're right: A sky_sphere will do fine. Just like a
true sphere will, too.

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