This is simply FUN after I read about the incandesence trick .

Minrad = 1
Maxrad = 2

Finalgather rays = 10000

Default Production quality:
Min/max sampling 3 and 3.
Triangular filtering, 2 by 2.

RESULT:
I'd be happy with this rendering quality! The jpeg format makes this pic shown here, look worse than it optimally is. I'll try to find the iff format on my hdd.