The Nançay Decimetric Radio Telescope (official abbreviation NRT) is located in the small town of Nançay , two hours' drive south of Paris, France. The radio telescope is a transit instrument of an unusual design where the flat primary directs energy towards the spherical secondary which focuses it towards a mobile focal carriage. The primary tilts North-South to select any object near the meridian, while the focal carriage moves East-West along railroad ties to track objects for roughly an hour within transit.
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Last updated: 05-06-2005 08:41:24
