In article <3C095E20.C3FF6972@lineone.net> , James Hansen 
<jam### [at] lineonenet>  wrote:

> I've discovered a problem with very large spheres seeming to vanish
> above a certain size. This fisrt showed itself when I was trying
> to use randomly placed spheres to create a starfield: when I moved
> the spheres further away from the camera (and made them larger) they
> vanished.

Not a bug.  Your sphere simply grows out of the the space POV-Ray considers
for intersection.  It is similar to:
<http://www.students.tut.fi/~warp/povVFAQ/misconceptions.html#simulatingsun>

    Thorsten

____________________________________________________
Thorsten Froehlich
e-mail: mac### [at] povrayorg

I am a member of the POV-Ray Team.
Visit POV-Ray on the web: http://mac.povray.org

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