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The Bruce Murray Space Image Library

Test Mirror for James Webb Space Telescope

Filed under explaining technology, optical telescopes, James Webb Space Telescope

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Test Mirror for James Webb Space Telescope A technology demonstrator mirror for the James Webb Space Telescope is shown in a test setup with balance beams and counterweights to counteract the effects of gravity. The mirror is hard-mounted to the test fixture, but the counterweights provide a balancing force that minimizes gravity sag.


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