Mont Sainte Victoire Diagram (Liliane Lijn)

Illustration done way back when, in the dusty past of 2010. Twas for The Solar Hills' project proposal created by artist Liliane Lijn and astrophysicist John Vellerga :
Solar Hills are large-scale solar installations in the landscape that define the horizon with light. With Solar Hills, we are creating a new awareness of the beauty and poetry of our star.

The coloured points atop t'mountain 'represent' spectroheliostats. These contain prisms calibrated to refract sun light at different positions across the landscape or the Mont Sainte Victoire skyline. The colours change as the relative positions of these prisms move with respect to an observer. Ahh the illusive nature of light!

Illustration done by Natural Thatch is here: