An active surface is a surface of a radio telescope that is under active computer control of its shape. Large radio telescopes (more than 10 m in diameter or length) always bend during operation, due to their enormous weight and the fact that even the strongest materials are not perfectly stiff.
An active surface is a surface of a radio telescope that is under active computer control of its shape. Large radio telescopes (more than 10 m in diameter or length) always bend during operation, due to their enormous weight and the fact that even the strongest materials are not perfectly stiff.
Source: Wikipedia "Active surface" · CC BY-SA 4.0
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