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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”

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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.

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References :

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

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#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #March2022 |#西昌衛星發射中心 # XichangSatelliteLaunchCenter – Successfully launching the advance iconic #LongMarch2C #ChangZheng2C  #CarrierRocket deploying #GalaxyAerospace Seven Cluster of Satellites#5G  #CommunicationSatellite #RemoteSensingSatellite

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On the 5th March 2022 on a Clear Saturday   in  CNSA _China National Space Administration -China – People’s Republic of China At 1401 afternoon hours Hong Kong –Beijing Time on an. China successfully launched Satellites using the Chang Zheng Long March 2C carrier rocket at the Xichang Satellite Launch Center Sichuan Province…..

China- People’s Republic of China successfully launched a Chang Zheng Long March 2C carrier rocket with 7 satellites.. the newly advance Payload section of the Carrier Rocket-  The “big head” has a long second-grade rocket! The 4.2-meter fairing has a large space and can accommodate many satellites …In this launch mission, the Chang Zheng Long March 2C carrier rocket sent 7 satellites into the predetermined orbit, and the diameter of the rocket fairing must be designed to be larger, which can be described as a new challenge. This launch is the first flight of a two-stage rocket configuration with a 4.2-meter fairing configuration, and the instrument cabin is at a height of 660 mm, which is a new combined configuration state of the rocket

Chang Zheng Long March 2C carrier rocket  Engines was ignited at the Xichang Satellite Launch Center, successfully sending 6 communication satellites and 1 remote sensing test satellite of Galaxy Space into the predetermined orbit .


According to reports, the six communication satellites launched this time are low-orbit broadband communication satellites independently developed and mass-manufactured by Galaxy Aerospace. The designed communication capacity of a single satellite exceeds 40Gbps, and the average satellite weight is about 190Kg. Among them, 4 communication satellites were named “Nantong No. 1”, “Yitu No. Xingyuan”, “Xuancheng No. 1” and “Beijing You-Yinhe” satellite; the remote sensing test satellite was “Xuanming Xingyuan” satellite.



Chang Ming, the commander-in-chief of Galaxy Aerospace Satellite, said that these six satellites will form my country’s first low-orbit broadband communication test constellation together with the first satellite of Galaxy Aerospace, and build a satellite-ground fusion 5G test network “Little Spider Web” with a single The uninterrupted and low-latency broadband communication service capability of about 30 minutes can be used for technical verification of my country’s low-orbit satellite Internet and the integrated space-earth network.

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#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #酒泉衛星發射中心 #JiuquanSatelliteLaunchCenter  #February2022| Successfully launching of the international Iconic advance improved #ChangZheng4C  #LongMarch4C  #CarrierRocket of the #LandExploration1 #LSAR01B #EnivormentalSatellite #EarthSciences #Satellite the largest SAR Group B satellite.. 

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酒泉衛星發射中心On 27th February 2022 Sunday 0744 Hong Kong SAR – Beijing Time  , CNSA –China National Space Administration  Jiuquan Satellite Launch Center – Inner Mongolia – China – People’s Republic of China successfully Launched the International Iconic Chang Zheng 4C – Long March 4C successfully deploying the Land Exploration Satellite

For the launch at the The Year of the Tiger starts…. Chang Zheng –Long March 4C successfully launched the Land Exploration-1 01 group B satellite During At 7:44 morning Hong Kong SAR –Beijing time  the Long March 4C carrier rocket ignited and took off, sending the Land Exploration-1 01 group B satellite into space, and the satellite then entered the predetermined orbit , the task was a complete success.

 The 01 group B star of Land Exploration No. 1 was developed by the Eighth Academy of China Aerospace Science and Technology Corporation. After the two stars meet, they will form a close-range flying formation or network operation state with the A star. Double star is mainly based on the differential interference surface deformation measurement task. It has the characteristics of all-weather, all-day, multi-mode and multi-polarization. It can be used in the fields of geology, land, earthquake, disaster reduction, surveying and mapping, and forestry. It can effectively improve my country’s geological disasters. Independent satellite detection

The Land Exploration-1 satellite was approved by the National Space Administration. It is the first satellite model launched during the “13th Five-Year Plan” period of the “National Civil Space Infrastructure Medium and Long-term Development Plan”. It consists of two identical L-band synthetic apertures A and B. It is composed of radar (SAR) satellites. After in orbit, it will achieve repeated orbit differential interferometric deformation measurement and interferometric topographic mapping in follow-flight and orbital modes respectively. As the first satellite of the 01 group of Land Exploration 1, the A star of the 01 group of Land Exploration 1 will work in the follow-flying formation mode with the subsequently launched B star for a long time, and jointly build the world’s first L-plane for surface deformation interferometry applications.  Band double star constellation. In addition to the long-term flying formation configuration, the double star will also conduct collaborative observation in close-range flying formations to achieve large-scale topographic surveys and improve the ability to obtain under-forest topography. Important support for high-precision terrain data update.

The weight of the 01-group B satellite of Land Exploration-1 is about 3.2 tons, and the total area of ​​the SAR antenna exceeds 33 square meters. It is currently the largest SAR satellite in orbit in China. The satellite operates in a quasi-sun-synchronous orbit at an altitude of 607 kilometers, and is equipped with an advanced L-band multi-polarization and multi-channel SAR payload. It has all-day, all-weather, and multi-mode Earth observation capabilities.


The launch of the 01 group A satellite of Land Exploration No. 1 will realize the independent and controllable differential interferometric SAR data in my country, significantly reduce the dependence on foreign SAR data for geological, seismic, emergency and other industrial applications, and contribute to the realization of global goals such as sustainable development. Provide strong technical support for space observation

The satellite of Land Exploration-1 will operate in a network with the subsequently launched Chang Zheng-Long March 4C satellite, which can be used in the fields of geology, land, earthquake, disaster mitigation, surveying and mapping, and forestry, providing support for my country’s autonomous satellite detection and prevention of geological disasters. Maintain national resources and ecological security. According to Wei Chun, deputy chief designer and executive chief engineer of the 01 group of Land Exploration No. 1, the double satellite has filled the gap of China’s L-band land exploration satellite. The L-band signal has the characteristics of long wavelength and good penetration. During observation, the L-band signal can pass through a 20-meter-high tree, and accurately measure the height of the ground, instead of only measuring the height of the forest……

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#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #February2022 | #CMS #ChinaMannedSpace the crew #Shenzhou13 #Takionauts #CSS #ChinaSpaceStation #TianheCoreModule #CNY2022 #YearoftheTiger The final look of what’s to come for this year’s China Space station completion #Tiangong #SpaceStation….

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中国空间站 On December 2021, the Belt and Road Initiative CNSA –China National Space Administration  CSS China Space Station in which on a three to six months setting up a new home of the first three Shenzhou 13 in which spending up to on for the further construction and verifications of the systems of the CSS –China Space Station 2021 launch calendar in which currently the three Takionauts current Shenzhou 13 ……  Preparations for the six months of extension of the China Space Station  In which the currently it remains awaiting for the crew of setting up home in conducting fun scientifically onboard中国空间站..  China Space station …..

China – People’s Republic of China’s  Space Station will dock two Shenzhou manned spacecraft, Shenzhou No. 14 and No. 15 at the same time for the first time this year, to achieve on-orbit rotation of six astronaut crews] This year, the institute will complete the orbital assembly and construction of my country’s space station through six launch missions. . The Tianhe core module of my country’s space station has been in orbit for 286 days since its successful launch on April 29, 2021. Berlin Hou, deputy chief designer of the space station system of the Fifth Academy of Aerospace Science and Technology Group, introduced that through the residency of the Shenzhou No. 12 and No. 13 crews, the key technologies used in the subsequent space station construction were systematically and fully verified, and the results were in line with expectations.

During the construction phase of the space station, six spacecraft, Tianzhou-4, Shenzhou-14, Experimental Module I, Experimental Module-II, Tianzhou-5, and Shenzhou-15, will be launched in sequence. The final space station will complete the construction of a T-shaped configuration, and the activity space in the cabin will exceed 110 cubic meters, which can realize long-term 3-person and short-term 6-person residency. After the space station completes the on-orbit test of its functions and performance, it will move to the operational stage.

Berlin Hou said that this year, for the first time, the space station will dock two Shenzhou manned spacecraft, Shenzhou 14 and 15, at the same time, realizing the rotation of the six astronaut crews in orbit, and forming a six-cabin combination configuration for the first time. The space station has a high density of orbital construction tasks, and the tasks are highly coupled and interrelated. During the construction process, there will be more than ten times of docking and separation actions. At the same time, new tasks such as cabin section repositioning, combination of large and small arms, and cargo exit will be implemented. It means that the state management and control of the space station assembly is extremely complicated. After the construction of the space station is completed, astronaut residency and multi-domain space science and technology experiments will continue to be carried out

[Shenzhou 13 astronauts will return in April this year, and the space station will enter the construction stage] my country’s Tiangong space station will be composed of three modules: Tianhe core module, Wentian experimental module and Mengtian experimental module. Berlin Hou, deputy chief designer of the space station system of the Fifth Academy of Aerospace Science and Technology Group, introduced that the core module has been in orbit for 286 days since its successful launch on April 29, 2021. The Tianzhou-3 cargo spacecraft assembly is running and in normal condition. Berlin Hou introduced: “The Wentian experimental module and the Mengtian experimental module have been integrated on the ground. At present, the ground test and verification work is mainly carried out. At present, everything is going smoothly.”

The mission planning of the space station includes three stages; the key technology verification stage, The construction stage and the operation stage are currently in the key technology verification stage. In April this year, after the Shenzhou 13 astronaut crew returned from a 6-month stay in space, the researchers will conduct a comprehensive assessment of the entire key technology verification of the space station. After the results meet the requirements, it will be transferred to the construction stage. In the construction phase, six spacecraft, Tianzhou-4, Shenzhou-14, Wentian experimental module, Mengtian experimental module, Tianzhou-5 and Shenzhou-15, will be launched in sequence, and the Wentian experimental module and the dream will be completed in a manned state. The rendezvous, docking and repositioning of the sky experimental module and the core module will finally complete the construction of the T-shaped space station.


Berlin Hou introduced: “After the Wentian experimental module goes up, it will dock with the forward port of the space station. After the docking is completed, it will form a ‘in-line configuration’ and fly for a few months. Before the Mengtian experimental module goes up, the ‘in-line configuration’ will gradually Inverted into an L configuration, the Wentian experimental cabin is transferred from the forward port to the lateral permanent berthing port. Then, the Mengtian experimental cabin is launched and docked to the forward port, which is equivalent to forming a partial T-shaped configuration. After the docking is completed , and then turn the Mengtian experimental module in another direction, park it at another permanent berthing port, and receive the T-shape

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#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #February2022 | #CASC #ChinaAerospaceScienceAndTechnologyGroup #BlueBook to arrange more than fifty launches for the Launch Calendar #Year2022 with 140 #Spacecraft’s ..   #中國航天科技集團公司 – Summary   

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On 10 February 2022 CNSA – China National Space Administration – CASC – China Aerospace Science and Technology Group plans to arrange more than 50 space launch missions this year upon On February 9th 2022 , China Aerospace Science and Technology Group Co., Ltd. released the “Blue Book of China Aerospace Science and Technology Activities (2021)” in Beijing, taking stock of global space activities in 2021. And announced the 2022 China Aerospace Science and Technology Corporation space program.

This year, China Aerospace Science and Technology Corporation plans to arrange more than 50 space launch missions and launch more than 140 spacecraft throughout the year. Among them, the construction of the space station is the top priority of the annual aerospace mission, and will focus on the development of models such as the fourth phase of the lunar exploration project.

In 2021, the world’s space launch activities will show a strong trend, with both the number and quality of launches reaching new highs. According to the statistics of the Blue Book, a total of 146 launch missions will be carried out around the world in 2021, the highest number of launches since 1957; the total number of launched spacecraft is 1,846, a record high, with a total mass of 777.70 tons, the largest since the retirement of the space shuttle.

In the Year 2021, China’s space launch activities will continue to make major breakthroughs. A total of 55 launch missions will be carried out throughout the year, ranking first in the world in the number of launches; 115 spacecraft will be launched, and the total mass of launched spacecraft will reach a new high of 191.19 tons, an increase of 85.5% year-on-year. .

As the leading force in China- People’s Republic of  China my country’s aerospace science and technology industry, in 2021, the Aerospace Science and Technology Group’s Long March series of launch vehicles will complete 48 launch missions, all of which have been successful. .

According to the Blue Book, in 2022, my country’s annual manned spaceflight project will carry out six launch missions, with Tianhe core module as the control center, Wentian and Mengtian experimental modules as the main experimental platforms, and a space station that will be fully cared for all year round. The No. 6A launch vehicle and a variety of commercial launch vehicles will carry out their maiden flights.

It is understood that after the Shenzhou 13 manned spacecraft completed the longest six-month combined docking mission so far, it plans to perform a return mission in mid-April this year and land at the Dongfeng Landing Site. This year, the Chinese space station will complete missions such as the first flight of six spacecraft assemblies, and the first two crews of six Takionauts to be in orbit at the same time.

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