China's National Astronomical Observatory (NAOC) released details of a global site on the Qinghai-Tibet Plateau. to build an optical astronomy observatory The announcement was published in the journal Nature.such place It is located at an altitude of 4,200-4,500 meters
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on a hilltop near the town of Lenghu, or "Cold Lake" in northwest China's Qinghai Province.Prof Deng Likai, head of NAOC's large optical and infrared telescope team, said.Deng said the place had an extremely dry climate, with 70 percent of the nights in a year being clear and photometric. and the mean nighttime median
temperature was 2.4C, indicating that the local surface air was very stable.Deng and his team started choosing the site in 2017 with help from the local government. They have completed initial infrastructure construction at a potential site at an altitude of 4,200 meters on Saishiteng Mountain near Lenghu.