Ball Aerospace optical technician Scott Murray inspects the first gold coated primary mirror segment on September 1, 2010, prior to cryogenic testing in the X-ray & Cryogenic Facility at NASA's Marshall Space Flight Center in Huntsville, Ala. The mirror was coated in gold by by Quantum Coating Incorporated.
A thin coating of gold, just about 3 grams for each of the 18 hexagons, is vaporized into a cloud and applied to the beryllium mirrors in a layer just 120 nanometers thick to improve the reflection of infrared light.
NASA's Webb telescope to see 13 billion light years away (pictures)
by CNET News.com | August 28, 2012, 4:10am PDT | Image 5 of 22
Image 5 of 22
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