Hi,

I've been using povray successfully over the years for various scientific
renders. And now I've hit an issue that I am not able to solve.

Basically my scene consists of various media with emission, absorption.
On top of that I add a large number of spheres defined as

#macro Star(Xx,Yy,Zz,Rr,Vr,Vg,Vb, Amb, Diff)
sphere { <Xx, Yy, Zz>, Rr
        texture {
                pigment {color rgb <Vr,Vg,Vb>}
                finish {
                       ambient Amb
                       diffuse Diff
                       }
                }
}

And I basically notice that when the number of those spheres in my scene  from
the file is >~ 149000, suddenly half of my image is rendered blank. (if the
number is below 149000, everything is rendered fine)

Clearly I'm hitting some kind of a limit. I tried to find an option to increase
to still render this, but was unsuccessful.

I am using povray 3.7.0.10.unofficial (from ubuntu).

are there any suggestions to deal with this ?

Thank you in advance,
         Sergey

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