观天“利器”！我国新一代太阳望远镜来了

Core Insights - The WeHoST project, a 2.5-meter large field high-resolution solar telescope, is set to enhance solar observation capabilities in China, with completion expected by the end of 2026 [1][2]. Group 1: Telescope Specifications - WeHoST will be the world's largest axially symmetric solar telescope, featuring a primary mirror diameter of 2.5 meters, which allows for both high resolution and a wide field of view, covering the entire solar activity area [2]. - The telescope's observational capabilities will be significantly improved, with a field of view expanded by three to four times compared to existing large solar telescopes [2]. Group 2: Scientific Collaboration and Objectives - WeHoST will work in conjunction with China's first solar exploration satellite, "Xihe," to enhance space weather monitoring and forecasting capabilities through a coordinated observation system [2][3]. - The telescope aims to provide comprehensive observations of solar phenomena, such as solar flares and coronal mass ejections, which can impact space weather and technological systems on Earth [3]. Group 3: Technical Challenges and Solutions - A major technical challenge for the telescope is managing the heat generated by solar radiation, which can reach up to 5000 watts on the primary mirror [5]. - To address this, the design includes over 200 air tubes to dissipate heat and maintain temperature differentials within specified limits, ensuring stable operation [5]. Group 4: Operational Flexibility - WeHoST is designed to switch between day and night operations quickly, allowing it to observe transient astronomical events, thus contributing to the emerging field of time-domain astronomy [7]. - This capability positions WeHoST to play a significant role in global astronomical networks, enhancing the understanding of rapidly changing celestial phenomena [7].