00后

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

A |     

    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
。    Colombo, Oct 14 (UNI) The number of dengue patients has increased by 300 per cent compared to 2021 in Sri Lanka, a newspaper reported on Friday.
The President of the College of Medical Laboratory Science (CMLS), Ravi Kumudesh, told The Island that about 60,000 cases have been reported so far this year across the country.
“During the same time in 2021, fewer than 20,000 cases were reported. Most cases have been reported from the Western Province. Higher numbers are also reported from Kandy, Galle, Jaffna, Kegalle, Puttalam, and Kurunegala districts,” he said.
Kumudesh said 36 health divisions have been declared vulnerable areas. However, most government hospitals did not have testing kits to detect dengue, he said.
“The Ministry of Health has not paid a number of companies for testing kits purchased in the past. Now, these companies do not sell test kits to the Ministry of Health.
"In the meantime, Rs. 125 million earmarked for purchasing medicine in the 2022 third quarter has not been spent. Another $60 million are left in the Indian credit line to buy medicines. We can easily buy testing kits and reagents with this money,” he said.
UNI MR。

Current article:http://www.jiubengtaibingpengou.pics/v6enhe/7p9.xls

Published on:02:26:08