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During the 13th five-year plan period, China may build the world's largest optical infrared telescope

Nanjing, May 26 (reporter zhong sheng) More than 60 astronomy experts from the national astronomical observatory of the Chinese academy of sciences and purple mountain observatory gathered in nanjing on Sunday to discuss the development strategy of science and technology for China's ground-based large-aperture optical infrared telescope. At the meeting, experts unanimously proposed the construction of China's 12-meter optical and infrared telescope during the 13th five-year plan period, to make up for the shortage of China's large-aperture optical and infrared astronomical observation equipment.

Currently, China's optical telescopes collect only 2% of the world's light, a huge gap compared with developed countries. Of the 14 8 - to 10-meter calibre optical infrared telescopes in the world, none are in China. The existing optical infrared telescope "is far from meeting the requirements of Chinese astronomers in high resolution and fine observation of celestial bodies".

"Now we have to apply for foreign telescopes to make careful observations, which can cost us tens of thousands of dollars a night and may not be available. Many domestic studies have to wait for the release of foreign data to conduct a second mining." At the meeting, experts felt that the shortage of China's own large aperture optical infrared telescopes has hampered research.

The new generation of large aperture optical infrared telescope is designed with a total height of 31 meters and a mirror aperture of 12 meters. Upon completion, it will be the world's largest optical telescope for quite a long time, making major breakthroughs for China in such major frontier fields as the nature of dark energy, optical certification and research of gravitational wave sources, and exploration of earth-like planets outside the solar system.

Chinese astronomers and instrument experts have been calling for the project since the early 20th century, according to experts from the nanjing institute of astronomical and optical technology. The key technology of large aperture telescope has been studied in advance for many years.

At present, the world's largest single-aperture radio telescope under construction in pingtang, guizhou province has entered the final stage. For example, the construction project of optical and infrared astronomical telescope has been approved, and China will have two of the world's largest astronomical telescopes in the future. But for astronomy, the world's two firsts still can't make up for China's lack of astronomical observation equipment.

"After the completion of China's 12-meter aperture optical infrared telescope, we may take the next step to build a 40-meter or 50-meter caliber super-large optical telescope," said the expert. "Astronomy is a never-ending pursuit." (after)