Well, Galileo and telescope is a bit hard. He did not invent it, he improved it and was
the first using it for sky observation.
What would be more important is his contributions to the proof and acceptance of the
If you make a picture search for Galileo you will definitely find this:
Its a technique called WPAP there is an tutorial of the inventor of this method on
sure it describes AI but there is on youtube a tutorial for inkscape
I found another one (but did not bookmark it)
using trace color quantization which seems much faster.
we could use this technique. For the background we could use pages from his book Dialogo
which can be easily found with a picture search