I think I tried that already but pov protested that image maps could not be 
combined with texture maps.  Currently I only use one of both at the same 
time but I may combine them when I map the metallic image and a picture on 
the same ball in  the macro.
I'm currently just fooling around with textures, image maps, alfa channels, 
finishes , hdri etc. to learn how to use these things. I'll probably have to 
rewrite the macro for more efficiency when I try to do an animation, so 
thanks for the tip.

"Florian Brucker" <tor### [at] torfboldcom> wrote in message 
news:45bbd81d$1@news.povray.org...
> Johan Feyaerts wrote:
>> ...
>> around this is a second ball slightly thicker
>> with the following texture map
>> ...
>
> You should be able to get rid of the outer sphere by using layered
> textures: http://povray.org/documentation/view/3.6.1/356/
> This should render a bit faster and work without increasing the
> max_trace_level.
>
> HTH,
> Florian

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