The "2.5 - meter Wide - field and High - resolution Solar Telescope" (WeHoST) is a significant giant solar telescope that empowers space observation. Here is a detailed introduction:Basic Information: Recommended by the Ministry of Education and approved by the National Natural Science Foundation of China, it is jointly developed by Nanjing University, the Nanjing Institute of Astronomical Optics and Technology of the Chinese Academy of Sciences, the Yunnan Observatory of the Chinese Academy of Sciences, and other institutions. It is the world's largest axisymmetric solar telescope. Located on the Wuming Mountain in Daocheng, Sichuan, at an altitude of 4700 meters, its supporting facilities are expected to be completed by the end of 2026.Technological Advantages Large Aperture and Wide Field of View: With a primary mirror aperture of 2.5 meters and a circular field of view of 7 arc - minutes, the field of view is expanded to 3 to 4 times that of existing equipment, which can completely cover the entire solar active region. High - resolution Observation: Equipped with a large - field ground - layer adaptive optics system, it can compensate for the impact of atmospheric turbulence on the imaging resolution in real - time within a large - field range, enabling a clearer and more comprehensive grasp of the details of each solar eruption.Functions and Significance Enhancing Space Weather Monitoring and Forecasting Capabilities: Solar activities such as solar flares and coronal mass ejections can affect the sun - earth space environment and technological activities such as communication and navigation. Through the observation of WeHoST, combined with data - driven simulation, it is possible to study solar eruption phenomena in detail, analyze the physical laws behind them, and is expected to realize the early warning and prediction of solar storms in the future, so as to prevent the hazards caused by space weather. Realizing Earth - Space Synergy Observation: It will cooperate with China's first solar exploration scientific and technological test satellite "Xihe" for earth - space synergy observation. WeHoST can observe the changes in different heights of the solar atmosphere, and is expected to completely observe the whole process of the generation and development of solar active regions for the first time in the world, which will further enhance China's space weather monitoring and forecasting capabilities. Promoting the Development of Time - Domain Astronomy: It has the ability to switch between day and night optical paths. It can not only observe the sun during the day, but also, through the turning of the flat mirror optical path, complete the optical path switch within 10 minutes at night and enter the "night - time mode" to observe supernova explosions, gravitational waves, and other rapidly changing celestial phenomena, which is expected to bring new discoveries to China's time - domain astronomy.Research Prospects: As a dual - purpose platform for solar and stellar discoveries, WeHoST can give full play to China's geographical advantages, improve the global time - domain astronomy network observation, provide more comprehensive and in - depth observation data for scientists, and contribute to the global scientific community's research on space weather, helping human beings explore the mysteries of the universe.
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