![]() It observes at wavelengths of 10 cm to 4.3 m. The cabin containing the feed antenna, suspended on cables above the dish, can move automatically by using winches to steer the instrument to receive signals from different directions. ![]() It has a novel design, using an active surface made of 4,500 metal panels which form a moving parabola shape in real time. It is the world's largest filled-aperture radio telescope and the second-largest single-dish aperture, after the sparsely-filled RATAN-600 in Russia. FAST has a 500 m (1,600 ft) diameter dish constructed in a natural depression in the landscape. "Sky's/Heaven's Eye"), is a radio telescope located in the Dawodang depression ( 大窝凼洼地), a natural basin in Pingtang County, Guizhou, southwest China. ![]() The Five-hundred-meter Aperture Spherical radio Telescope ( FAST Chinese: 五百米口径球面射电望远镜), nicknamed Tianyan ( 天眼, lit. ![]()
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