Incredible overview of making mirrors for the world's largest telescope

Indeed! You have to prove it’s feasible before they let you have a lab to prove that it’s feasible. Roger Angel had his first mirror-making oven in the hallway of the first floor of the Optical Sciences building, where I worked as an undergrad in Tucson. Same with the first silicon crystal growing furnace at Texas Instruments - it was in a hallway because no one in the company would finance such a crazy idea.

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