#MadeInChina #中國製造 #中國 |#西藏 #西藏天文馆 #TibetPlanetarium #June2022 |#Lhasa The world’s highest-altitude planetarium Observatory telescope – world’s largest refracting optical astronomical telescope ready year  2024,  – under construction, which will provide space early warning services for space activities…#TibetAutonomousRegion #China #PeoplesRepublicOfChina ….

西藏天文馆 Currently at the moment in Lhasa the region capital of Tibet Autonomous Region of China- People’s Republic of China the Construction of the world’s highest – The world’s highest-altitude planetarium, the西藏天文馆Tibet Planetarium, started construction in Lhasa on June 12. It is reported that the roof of the planetarium will be equipped with a refracting optical astronomical telescope with a diameter of 1.06 meters, which will also be the largest refracting optical astronomical telescope in the world. The planetarium has a total construction area of ​​11,571.9 square meters and is expected to be completed in June 2024. The roof of the planetarium will be equipped with a refracting optical telescope with a diameter of about 1.06 meters. This astronomical telescope will also surpass the 1.02-meter-diameter refractor telescope of the Yerkes Observatory in the United States and become the world’s largest refracting astronomical telescope. …


This one-meter-class refractor telescope can monitor variable stars, poor photometry of binary stars, and supernova monitoring. The scope of monitoring includes celestial bodies in the solar system, stars in the Milky Way, and even some nearby galaxies in the outer reaches of the Milky Way can also be observed.
In addition, in scientific research work, this one-meter-class refracting telescope will be used for space target observation, providing space early warning services for my country’s space launch activities and the on-orbit operation of spacecraft.


“Space debris and space junk are being monitored on a global scale, and this monitoring network requires a large number of space observation facilities such as telescopes to work together. The scientific goals of our one-meter-class refractor telescope also involve near-Earth detection in space. The monitoring activities of small celestial bodies and space debris are part of the entire monitoring network.” Wang Junjie said that there is no professional large-scale astronomical observation telescope in the vast Tibet area, and the space monitoring network needs to deploy monitoring equipment closely. The high-level refractor telescope is equivalent to filling the “blind area” of China’s space monitoring network. It will become an important part of the entire monitoring system. The monitoring data obtained will also be used together with the data of other monitoring facilities to calculate the space flight. The construction of the Tibet Planetarium in the orbit of the object 

The special geographical and climatic advantages of Tibet can also facilitate astronomical observations. In order to reduce the influence of atmospheric, weather and other factors on astronomical observation activities, astronomical observation facilities should preferably be located in places with higher altitudes, more sunshine and less rain, and less light pollution. The characteristics of high altitude, sunny days, low population density and high atmospheric visibility in Lhasa will be conducive to astronomical observations.

  In addition, the Tibet Planetarium after its completion will also undertake a special mission, that is, to carry out astronomical science popularization activities that are easy for the public, especially young people to participate in and accept, and popularize astronomical science knowledge through exhibitions, training, experiments, video broadcasts, lectures, etc. , to spread scientific ideas.

 ”The world’s highest-altitude planetarium, coupled with the world’s largest refracting optical astronomical telescope, will have a huge appeal to local people, domestic and foreign tourists, and astronomy enthusiasts. The scientific and cultural literacy of the public plays a unique and important role.” Wang Junjie said that he believed that the Tibet Planetarium would become a new local Internet celebrity landmark, attracting local people and global tourists to visit.

  According to the operation data of the Tibet Natural Science Museum over the years, the annual reception of the Tibet Planetarium is expected to reach more than 100,000 people, and more than 100,000 people can receive astronomical science popularization education every year.

  Wang Junjie said that in recent years, the astronomical undertakings in Tibet have been developing continuously, from the Tibet Yangbajing Observatory, the first professional observatory in Tibet, the National Astronomical Observatory, to the Ali Observatory of the National Astronomical Observatory in western Tibet. The former has a submillimeter-wave telescope in cooperation with Germany, which mainly explores star formation, organic molecules, etc. The latter is still under further construction, including gravitational wave telescopes, optical telescopes and other equipment.

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#MadeInChina #中國製造|#WFST #WideFeildSurveyTelescope April2022 | #UniversityofScienceandTechnologyofChina incredible #China- #PeoplesRepublicOfChina has built a new advance Next generation of #SkySurvey #Telescopes with a primary mirror diameter of 2.5 meters and 720 million pixels Scientific Imaging Detector Test Platform Completed”

On 14th April 2022 China – People’s Republic of China has incredibility  has built a new generation of sky survey telescopes with a primary mirror diameter of 2.5 meters and 720 million pixels with Another Chinese Tianyan opened? Qinghai Lenghu will build a survey telescope with a primary mirror diameter of 2.5 meters….  Which If you use a lens with a diameter of 2.5 meters and a photosensitive element with 720 million pixels to make a telescope, how far can it see? How clear will things be?

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China – People’s Republic of China is currently manufacturing such a telescope. It is co-operated by the University of Science and Technology of China and the Haixi Mongolian and Tibetan Autonomous Prefecture of Qinghai Province. One of the sites of the astronomical observatory), the Wide Field Survey Telescope, whose full name is the University of Science and Technology of China – Purple Mountain Observatory of the Chinese Academy of Sciences Large Field Survey Telescope, English name Wide Field Survey Telescope, referred to as WFST, it is China – People’s Republic of China The new generation of astronomical survey telescopes developed by the State, a major national astronomical observation infrastructure, will become the optical time-domain survey telescope with the strongest ability to survey the sky in the northern hemisphere after completion.

​According to the news from the University of Science and Technology of China on April 11, the research and development team composed of the university and the Purple Mountain Observatory of the Chinese Academy of Sciences has completed the development of the primary mirror CCD290 camera and CCD test system. The relevant results have been published in the world famous astronomical instrument. In the publication “Journal of Astronomical Telescope Instruments and Systems”, this innovative research result laid the foundation for the development of the main focus camera for the large field telescope.

The large-field survey telescope is a new generation of astronomical telescopes developed in my country. The diameter of its main mirror is 2.5 meters. The design adopts the international leading main focus optical mode, which can provide a large field of view, high precision and wide-band sky survey capabilities. , its photosensitive element is a large area array 720 million pixel splicing CCD detector, which is spliced ​​by 9 CCD290-99 chips, the imaging array reaches 9K x 9K, and the imaging area reaches 92.2 mm × 92.4 mm, with ultra-low noise readout capability , the readout noise can be less than 5 electrons at a readout rate of 500Kpix/s.

The center of the above picture is the main focus camera, and the right is the CCD290 camera

​The main focus camera with

​Some people call the large-field survey telescope “another Chinese sky eye”. It is true that both have strong sky survey and observation capabilities, but the two are very different. In terms of observation methods, the Chinese sky eye (FAST) It does not move, basically just patrols the night sky with the rotation of the earth. It is impossible to fix the viewing angle at a certain point in the night for detailed observation, but WFST can dynamically patrol the night sky and can fix a certain celestial object on the sky. long time observation.

Schematic diagram of WFST structure

The electromagnetic spectrum observed by the two

Chinese Sky Eye

​As the strongest large-field optical survey telescope in the northern hemisphere, WFST is a “three-in-one” powerful prime focus camera that integrates “scientific imaging, wavefront detection, and guide star sensing”. It can discover countless galaxies, quasars and stars in the huge cosmic space, and can also monitor large-scale celestial collisions, supernova explosions, stellar helium flashes, fast radio bursts and other transient sources in distant cosmic spaces, as well as the Milky Way and nearby galaxies. Appearing variable stars and other celestial bodies, small celestial bodies such as asteroids and comets in the Kuiper belt in the solar system and far away can also be seen. In addition, the structure and formation and evolution history of galaxies can be judged by observing the star stream in the Milky Way and nearby galaxies.

References :

The April 11 article in “Science China Journal” “The Large Field Survey Telescope Scientific Imaging Detector Test Platform Completed”

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