David Given wrote:
> Having thought about it some more, I think that what I'm looking for is
> a cross between an orthographic and spherical camera --- I want Povray
> to cast rays radially inwards from a spherical viewing surface towards
> the centre of my model. Does such a thing exist? If not, can I fake it?

I haven't actually tried this, but perhaps you could put a spherical 
camera at the center of your moon, put everything in your scene into an 
object{...} construct with the no_image attribute, and then put a large 
perfectly reflective sphere centered at your camera around the scene?

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