Dawodang telescope, China
The Five hundred meter Aperture Spherical Telescope (FAST; Chinese: 五百米口径球面射电望远镜
FAST, in full Five-hundred-metre Aperture Spherical radio Telescope, astronomical observatory under construction in the Dawodang depression, Guizhou province, China, that when completed in September 2016 will be the largest single-dish radio telescope in the world. FAST’s collecting area will be more than 2.5 times that of the 305-metre (1,000-foot) dish at the Arecibo Observatory in Puerto Rico. FAST will be a spherical reflector 500 metres (1,600 feet) in diameter sitting in a natural depression
It will have a cost of 700 million yuan (around 110 million US dollars at the time).
The site's Karst depression is large enough to host the 500-meter telescope and deep enough to allow a zenith angle of 40°. The light-weight feed cabin —suspended 140 m above the reflector— will be driven by cables and servomechanisms in addition to a parallel robot as a secondary adjustable system to move with high precision