en.Wedoany.com Reported - On June 15, 2026, the Five-hundred-meter Aperture Spherical Radio Telescope (FAST), located in Pingtang County, Guizhou Province, China, completed the installation of six fully domestically developed giant steel cables. This marks the complete replacement of the steel cables in its core cable-driven system with domestically produced ones, achieving full localization of the "eye muscles" for this renowned "celestial eye." Subsequently, the feed cabin will undergo hovering static load tests and extreme position movement debugging, after which the telescope will resume normal observations.

FAST, inaugurated in September 2016, is the world's largest single-dish and most sensitive spherical radio telescope. Its feed cabin, akin to an "eyeball," must achieve real-time ultra-high-precision positioning within a 206-meter diameter range at a height of 140 meters. The six steel cables towing the feed cabin endure hundreds of bends and pulse loads daily, requiring stringent performance standards to prevent breakage during five years of high-intensity operation. Yao Rui, Director of the Measurement and Control Engineering Department at the FAST Operation and Development Center, stated that this effort achieved a full-chain domestic breakthrough from raw materials to end use, with research and development costs approximately half those of similar foreign products.

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