Beryllium Mirror Segment

Beryllium Mirror Segment

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News release ID: STScI-2003-27
Release Date: Sep 10, 2003
Image Use: Copyright
About this image

Northrop Grumman Corporation's Space Technology sector is the prime contractor leading the design and development of the James Webb Space Telescope (JWST). Following a thorough and detailed evaluation, beryllium was selected as the material for the JWST primary mirror. A technician is shown mounting an alignment fiducial on a hexagonal beryllium mirror segment, which is approximately as large as the JWST flight mirror. It was developed under the Advanced Mirror System Demonstrator program (AMSD). AMSD was funded by a multiagency group to address the improvements in mirror materials, design and cycle times necessary to fabricate primary mirrors for future missions. The mirror segment stands in a support and actuation system where it was polished.

Photographs, Webb Mission


Northrop Grumman