China discovers a world-class astronomical observatory site on the Tibetan Plateau 中國在青藏高原發現世界級天文位置

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A team of Chinese astronomers have discovered a high-quality site for astronomical observatory on the Tibetan Plateau, which will help overcome bottlenecks in the development of China's optical astronomical observation and bridge the discovery gap between existing world-class sites.

The site is located on the Saishiteng Mountain in Lenghu township, Qinghai's Haixi Mongol and Tibetan Autonomous Prefecture. The findings of this study were published in the academic journal Nature on August 18.

After spending three years of field survey, scientist from the National Astronomical Observatory of China chose the location at an altitude of around 4,200 meters for its ideal weather and climate conditions.

"It has plentiful sunshine. The cloudless time during the day lasts 10 hours, while the night skies are extraordinary clear. This is the first feature. The second feature of this place is that it is extremely arid, which receives very little annual precipitation," said Deng Licai, principal researcher from the National Astronomical Observatories affiliated with the Chinese Academy of Sciences (CAS).

Through three years of continuous data gathering, scientists found out the medium value of astronomical seeing in Lenghu is 0.75 arc seconds, which is rated as world-class in terms of astronomical seeing, a technical term for the blurring effect caused by turbulence in Earth's atmosphere that smears a telescope image.

According to data, the observable time at Lenghu is up to 83 percent of nights in a year, indicating the site has outperformed other potential locations on Tibetan Plateau, and comparable to the world's leading observatories in Chile and Hawaii.

"The Tibetan Plateau locates on the Eastern Hemisphere, which has no high-quality observatory between Hawaii and Europe. So if we can bridge the huge gap between these places, it will greatly benefit the observations," said Deng.

中國天文學家團隊在青藏高原發現了一個優質天文台站址，這將有助於克服我國光學天文觀測發展的瓶頸，彌合現有世界一流站址之間的發現差距。

該遺址位於青海省海西蒙古族藏族自治州冷湖鄉賽甚騰山上。這項研究的結果於8月18日發表在學術期刊《自然》上。

經過三年的實地考察，中國國家天文台的科學家選擇了海拔4200米左右的位置，因為這裡的天氣和氣候條件非常理想。

“這裡陽光充足，白天無雲時間長達10小時，而夜空格外晴朗。這是第一個特點。這個地方的第二個特點是非常乾旱，年降水量很少，中國科學院國家天文台首席研究員鄧立才說。

科學家們通過三年的連續數據收集，發現冷湖天文視界的中值為0.75弧秒，在天文視界方面堪稱世界一流，由地球大氣中的湍流使望遠鏡圖像模糊而引起的模糊效果的技術術語。

據資料顯示，冷湖一年中夜晚的可觀測時間高達83%，表明該地點的表現優於青藏高原其他潛在地點，可與智利和夏威夷等世界領先的天文台相媲美。

“青藏高原地處東半球，夏威夷和歐洲之間沒有高質量的天文台。所以如果我們能彌合這些地方之間的巨大差距，將對觀測大有裨益，”鄧說。


Mega projects in China 中國的大型項目
China Infrastructure 中國基礎設施
China Speed 中國速度
China Innovation 中國創新
Chinese Technology 中國技術
High speed train 高速火車
Bullet train 子彈頭列車
Fuxing High Speed Rail 復興高鐵
Mega Machines 超級機器
Aerial View 鳥瞰圖
The longest bridge in the world 世界上最長的橋
The tallest bridge in the world 世界上最高的橋樑
The highest bridge in the world 世界最高的橋樑
China Space Exploration 中國太空探索
China Space Station 中國空間站
Xiong'an New Area 雄安新區