A James Webb Space Telescope primary mirror segment blank.
Credit: AXSYS
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A James Webb Space Telescope primary mirror segment blank. This image shows the back of the mirror blank, which is carved out in this pattern to make the mirror segment light, yet maintain its integrity.
Credit: AXSYS
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A James Webb Space Telescope primary mirror segment blank. This image shows the back of the mirror blank, which is carved out in this pattern to make the mirror segment light, yet maintain its integrity.
Credit: AXSYS
NASA Image Use Policy
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Chad Sanders, a computerized numerical control (CNC) machinist for AXSYS Technologies in Cullman, Ala., monitors machining operations on a mirror segment for NASA's James Webb Space Telescope. AXSYS, a subcontractor for Ball Aerospace of Boulder, Colo., delivered the last of 18 mirror segments, called "blanks," in January. They will next undergo grinding and polishing operations at Tinsley Laboratories in Richmond, Calif. The James Webb Space Telescope, NASA's next Great Observatory, is scheduled to launch to orbit in 2013 to study the oldest stars and galaxies formed in the universe. The program is managed by NASA's Goddard Space Flight Center in Greenbelt, MD.
Credit: AXSYS
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Image of the Scanning Shack Hartmann System (SSHS), a pair of large mirror test stations used to measure the mirror segments of the Webb telescope. As part of that SSHS program, several improvements were made to the wavefront sensor technology that now allow eye health instruments to be aligned more precisely. Credit: Abbott Medical Optics Inc.
Read more: www.nasa.gov/topics/technology/features/webb-eyes.html
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