Episode 10: Wax On, Wax Off

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Duration: 3 minutes, 16 seconds

The making of Webb's mirrors is a complex process. It requires painstaking work to fine-tune each surface to capture and direct the maximum amount of light to the telescope's detectors. The mirrors must be ground and polished to a precise, smooth curve that keeps light from bouncing off in unwanted directions. At Tinsley Laboratories in Richmond, Calif., engineers are shaping Webb's mirrors to their exact requirements.

Behind the Scenes, Webb Mission


NASA and Mary Estacion (STScI)

Publication: March 9, 2011

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