Episode 11: Great Plane

About this video
Duration: 3 minutes, 57 seconds

Webb's 18 separate mirror segments will be held in place by a graphite structure called a backplane. This one-of-a-kind piece needs to be thermally stable to -400 degrees Fahrenheit (-204 degrees Celsius), and hold Webb's mirror segments steady to within one ten-thousandth the diameter of a human hair. Engineers at ATK in Magna, Utah, take us through the process of designing and creating the backplane.

RELATED LINKS:
About the Backplane

James Webb Space Telescope's Actual 'Spine' Now Being Built (2009)


Tags
Interview, Observatories, Webb Telescope

Credits

NASA and Mary Estacion (STScI)

Publication: May 6, 2011

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