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, of him grinding the 400mm mirrors.
The Snowden Bull
10 years ago
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