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Chinese-made infrared telescope with domestic detectors achieves astronomical imaging, reducing foreign reliance_我的网站

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    Ground-based infrared telescope installed at Saishiteng Mountain, Lenghu township, Northwest China's Qinghai Province Photo: Screenshot from gdstc.gd.gov.cn
Chinese scientists on Wednesday released the first complete set of observational images captured by China's new-generation ground-based infrared telescope, filling a gap in the country's near-infrared astronomical observation capabilities and reducing reliance on foreign infrared detector technology, China News Service reported on Wednesday. 
The 80-centimeter near-infrared telescope was installed at Saishiteng Mountain, Lenghu township, Northwest China's Qinghai Province in October 2024. Jointly developed by Sun Yat-sen University and several partner institutions, the telescope is China's first to achieve scientific imaging in the 1.2-micrometer J band and 2.2-micrometer K band using domestically developed scientific-grade InGaAs and HgCdTe detectors. 
The telescope enables unattended remote operations, and can lock onto any target in the sky within 15 seconds. Its infrared capability allows it to see through interstellar dust, enabling it to observe cold and distant celestial objects that are difficult for optical telescopes to capture. 
According to Ma Bin, a professor at the School of Physics and Astronomy, Sun Yat-sen University who led the research team that released the infrared telescope's observational images, all three of the telescope's core astronomical observation capabilities were fully validated during operation. 
It rapidly responded to and tracked multiple gamma-ray bursts and supernova events, recording the evolution of their infrared afterglows following the explosions. It continuously monitored brown dwarfs, precisely capturing periodic variations in their atmospheric brightness. Using image-stacking technology, it also observed active galaxies billions of light-years away. 
Since its deployment in Lenghu, the system has supported infrared observations for more than 10 Chinese research institutions, accumulating valuable experience for the construction of future large-scale infrared telescopes. 
Lenghu township, where the world-class astronomical observation base takes shape, is hailed as "the most Mars-like place on the Earth." The astronomical observation base was said to be an astronomical observation site comparable to the top ones in the world by a Nature article published on August 18, 2021, according to the Chinese Academy of Sciences. 
Once prospered in 1950s due to its rich petroleum resources, Lenghu is now becoming a premier astronomical observation site and Mars-themed tourist destination, according to Xinhua News Agency.
Global Times
。    台风“白海豚”8月10日13时，中心已移出浙江！今年第13号台风“白海豚”（热带风暴级），今天（10日）13时中心位于江西省上饶市广丰区境内，就是北纬28.4度、东经118.4度，8级（20米/秒），990百帕。预计“白海豚”将以每小时10—15公里的速度向西北方向移动，强度变化不大。今明后三天：暴雨大暴雨“车轮战”今天：降雨最强的一天。浙北和沿海地区大部有大雨暴雨，局部大暴雨。

二 | 其他地区中到大雨，局部暴雨。全省雨量都不小，出门一定注意安全。

三 | 明天：强降雨核心区略有收缩，但仍“咬”住浙北北部不放！继续部分中到大雨，局部暴雨，个别大暴雨。其他地区局部大雨，雨势虽比今天有所减弱。但还是不能放松警惕。后天浙北和沿海地区仍有阵雨雷雨，局部大雨。其他地区部分有阵雨。气温方面，高温彻底“熄火”，凉意明显。今天白天全省大部最高气温27~29℃，明天最高在30℃上下，早晚甚至有点凉。怕冷的朋友，备件薄外套。预计“白海豚”残涡和西风槽“接力”，浙江这雨还得下一周。

四 | 13日-15日，“白海豚”残涡和西风槽联手，全省大部地区仍维持阵雨雷雨天气，尤其是14日-15日，部分地区雨势还会再次增强至中到大雨。16日-19日，受海上偏东气流影响，阵雨或雷雨依然频繁登场。一句话总结：未来一周，雨伞是出门标配，早晨出门备件薄外套。重点提醒：严防地质灾害和小流域山洪这次台风降雨持续时间长、累计雨量大，尤其是浙北和沿海地区，土壤含水量已经高度饱和。山区要特别警惕小流域山洪、山体滑坡和泥石流等次生灾害，住在山坡、溪河边、山洪沟口附近的居民，一定要多留意周边情况，必要时配合转移。虽然“白海豚”的强度已减弱为热带风暴，但强降雨影响才刚刚开始。

五 | 据中国天气网介绍，“白海豚”登陆后还将继续深入内陆并北上，在河北、河南一带还将与冷空气结合，导致降雨时间长、累计雨量大，局地最大累计雨量跟登陆点差不多，降雨具有极端性，个别地点累计雨量可能超过登陆点。中央气象台预计，未来三天，随着“白海豚”深入内陆，浙江、上海、江苏、安徽、湖北、河南、河北等地将有持续性大范围强降雨，局地有特大暴雨，部分地区并伴有短时强降水、雷暴大风等强对流天气。

六 | 13日后，随着台风残余系统北上与冷空气结合，京津冀、辽宁等地还将有明显降雨。

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Published on:02:03:21