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File:Solar Dynamics Observatory 1.jpg

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Four sets of mirrors were commissioned by NASA to Smithsonian to be built. Smithsonian subcontracted Tinsley in California, and Sagem in France to build each two aspheric primary and two aspheric secondary mirrors. The Mirrors have super polish surface of less than 3 Angstrom in roughness and the mirrors figure error is less than 0.005 waves. The state of the art mirrors took over 6 months to fabricate with the latest polishing techniques available.

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Description
English: Solar Dynamics Observatory Satellite
Source http://www.nasa.gov/centers/goddard/news/topstory/2008/sdo_propulsion.html
Author NASA

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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current11:18, 31 July 2008Thumbnail for version as of 11:18, 31 July 20081,280 × 720 (437 KB)GDK{{Information |Description={{en|1=Solar Dynamics Observatory Satellite}} |Source=http://www.nasa.gov/centers/goddard/news/topstory/2008/sdo_propulsion.html |Author=NASA |Date= |Permission= |other_versions= }} {{ImageUpload|full}} [[Category:Solar Dynamic

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