Year: 2008

Homemade 400mm binoscope

A big Keanu “whoa!” for this 400mm binoscope (binocular telescope) being built by an enterprising Frenchman. He’s spent three years on it so far. It’s not done, but it is operational. The engineering on this is gorgeous. The carriage system is almost as cool as the scope itself! There’s only one other video on YouTube, […]

Catenary solar reflector

Catenary solar reflector

Tho X. Bui has been working with solar reflection concentrators based on the catenary curve, a curve made naturally by a hanging chain (the shape is made by gravity). He writes: Instead of having to buy sheet metal and form it into a complex shape, then build a structure to maintain that shape rigid, the […]