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Tekdata - Extreme low-temp wiring keeps the satellite's thermal noise down Published Sep 10 2008[Printer friendly version][Email article to a friend][More Switches,Relays&Onboard articles]
To enable the James Webb Space Telescope (JWST) to detect very weak infrared signals from the origins of the universe, Tekdata Interconnect Systems has delivered electrical interconnects enabling on-board instruments to operate accurately at temperatures below 1 Kelvin.
Replacing the Hubble Space Telescope, and carrying a mirror seven times larger for greater light-collecting sensitivity, JWST is the most important astronomical project of the decade, according to the National Research Council.
To gather new data describing the origins of light, galaxies, stars and life, the telescope will carry a number of imaging and spectrographic instruments including the Mid-Infrared Instrument (MIRI) and the Near-Infrared Spectrograph (NIRSpec). The instruments are cryogenically cooled to temperatures as low as 100 milliKelvin, and require superconducting wire interconnects to prevent thermal interference due to heat leak. To achieve the utmost accuracy in the near infrared and mid infrared wavelengths, from 0.6m to 5m and 5m to 27m respectively, Tekdata is working with European and American institutes supporting JWST to build flight cables for NIRSpec and test harnesses for MIRI.
The MIRI and NIRSpec wiring solutions make use of Tekdatas Cryoconnect technologies, including Niobium Titanium (NbTi) superconducting materials, ultra-fine-gauge wire fabrication processes, and planar weaving to achieve the ultimate electrical performance and repeatability, says the company.
Cryoconnect is proud of its involvement on this project, said Roy Blake, business development manager at Tekdata

'We conclude that the burst's extraordinary brightness arose from a jet that shot material almost directly towards Earth at almost the speed of light,' said Guido Chincarini of the University of Milano Bicocca in Italy.
The event gave astronomers an unprecedented view of a gamma-ray burst, and the observations made in the aftermath of the explosion have revolutionised our understanding of these events.
It all began on the morning of 19 March 2008. In Chile, the European Southern Observatory's TORTORA telescope and Poland's 'Pi of the Sky' telescope detected a bright flash in the direction of the Botes ('the Herdsman') constellation. High above the Earth, NASA's SWIFT satellite detected a burst of gamma rays from the same source. Within seconds, SWIFT sent out an alert and soon numerous telescopes around the world had turned their gaze towards the event

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