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Primary Mirror Cryogenic Testing A team of engineers and technicians from NASA and Ball Aerospace & Technologies Corp. of Boulder, Colo., prepare to load three James Webb Space Telescope mirror segments into a test chamber in the X-ray & Cryogenic Facility at NASA’s Marshall Space Flight Center in Huntsville, Ala. There, they will subject the segments to temperatures reaching minus 414 degrees Fahrenheit -- ensuring the mirror segments can withstand the extreme temperatures of space. The Webb Space Telescope is scheduled to launch to space in 2014 to study the formation of the universe and the evolution of our solar system. Credit: NASA/MSFC Primary Mirror Cryogenic Testing
Six of the 18 James Webb Space Telescope mirror segments are being prepped to move into the X-ray and Cryogenic Facility, or XRCF, at NASA's Marshall Space Flight Center in Huntsville, Ala., to eventually experience temperatures dipping to a chilling -414 degrees Fahrenheit to ensure they can withstand the extreme space environments. The test chamber takes approximately five days to cool a mirror segment to cryogenic temperatures. Marshall's X-ray & Cryogenic Facility is the world's largest X-ray telescope test facility and a unique, cryogenic, clean room optical test location. Credit: NASA/MSFC/Emmett Givens sanitary valves manufacturers socket weld gate valve dimensions valmatic plug valve hydraulic valve adjuster function of expansion valve fisher pressure regulating valve clawfoot tub diverter valve wall mount |
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