The National Museum of China中国国家博物馆; flanks the eastern side of Tiananmen Square in Beijing, China. The museum’s mission is to educate about the arts and history of China. It is directed by the Ministry of Culture and Tourism of the People’s Republic of China. 16 E Chang’an St, 前门 Dongcheng, China, 100051…. China, People’s Republic of China.
On the week of 20th January 2023 just before the Chinese Lunar New Year eve of the Year of the Rabbit The hall of the National Museum has recently exhibited a lot of aerospace exhibits. In addition to the Chang Zheng Long March 10 and the Sky Survey Telescope, there are also models of the Chinese space station assembly, the return capsule of the Shenzhou spacecraft and the actual parachute, the escape tower of the Chang-2 F, the Chang-2 F/Chang 7/Chang 5 B model, YF-20/100/77 engine, etc. These exhibits may not be permanent. Friends who are interested in Beijing or other places must seize the opportunity!
The China Space Station Sky Survey Space Telescope (CSST) model exhibited by the National Museum is quite high-precision, and its overall structural layout is clear at a glance. It is mainly composed of two parts: the optical cabin and the service cabin. The overall outer diameter is about 4.2 meters, and the diameter of the main mirror is about 2 meters. . In terms of the external structure of the cabin, it can be seen that there are a pair of solar wings on both sides of the service cabin, 5 control moment gyroscopes, a relay communication antenna, a mechanical arm docking port on the top, and a space station docking port and related equipment for rendezvous and docking at the rear; the optical cabin It is covered with handles for astronauts to go out of the cabin, and 4 star sensors.
In addition, CSST has a total of 3 types of 48 attitude control engines installed, including 16 forward 150N, reverse 4 150N, rotation 12 10N, pitch 8 25N, yaw 8 25N, visual judgment is not guaranteed to be completely correct
Images and visuals are of their Respectives – Photographed by 深蓝之日DBS
Currently中国空间站 Previously On 18th July 2022, the Belt and Road InitiativeCNSA –China National Space AdministrationTiangong Space Station CSS China Space Station in which on a six months setting up a new home of the first three Shenzhou 14 in which now readying for the newest module to be installed is the Wentian Experimental Module launching from a Chang Zheng – Long March 5B-Y3 Carrier Rocket at Wenchang Space Craft launch Center –Hainan Province – China – People’s Republic of China..
Currently one of the latest installations towards the Tiangong China Space Station – the latest is the Sky Survey Space Telescope stands up to 3 stories high……. China’s Sky Survey Space Telescope is in the initial stage of development. The telescope will be launched after the completion of the China Space Station. It is expected to be put into scientific operation around 2024 and will become a flagship space astronomy facility for exploring the sea of stars. It is about the size of a bus and stands 3 stories high, just like a mobile space observatory, which will fly independently with the space station in co-orbit….
The latest news of the Sky Survey Space Telescope, which is in the preliminary development stage……With the construction of the Chinese space station, the development of the Sky Survey Space Telescope for co-orbit flight with it is also progressing in an orderly manner. The reporter learned from the Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences that at present, new progress has been made in the development of the first prototype of the sky survey optical facility. The telescope is expected to be launched after the completion of the Chinese space station, and will become a flagship space astronomy facility for exploring the sea of stars.
As the optical module of the Chinese space station, the Sky Survey Space Telescope will be equipped with an optical system with a diameter of 2 meters and a series of state-of-the-art detectors. The size of the telescope is equivalent to a bus, standing three stories high and weighing more than ten tons.
On the Sky Survey Space Telescope, the first-generation instrument contains a total of 5 observation equipment, including a sky survey module, a terahertz module, a multi-channel imager, an integral field of view spectrometer, and an exoplanet imaging coronagraph. Among them, the most important observation time is the sky survey module, which is a camera with an extremely wide field of view.
Xu Shuyan, researcher at the Changchun Institute of Optics and Mechanics, Chinese Academy of Sciences, chief designer of the sky survey optical facility: We are currently in the initial prototype development stage. At present, all subsystems, components and units of the identified product have been basically developed and are ready for integration testing and testing. After the completion of these tasks , we will move to the prototype development stage, carry out the development of flying parts, carry out joint tests with the integration of the sky survey platform, carry out the launch site test, and then launch at the right time.
Zhan Hu, researcher of the National Astronomical Observatory of the Chinese Academy of Sciences, responsible scientist of the Sky Survey Optical Facility: It co-orbits away from the space station during normal observation. They are in the same orbital plane. When it needs to be replenished or repaired and upgraded, the Sky Survey Space Telescope will actively dock with the space station , and then resupply, or through the operation of the astronauts, the rear-end instruments and some components of the front main optical system can be replaced and upgraded, or some of them can be transported to the experimental cabin for maintenance. According to China’s manned spaceflight project plan, the Sky Survey Space Telescope is expected to be put into scientific operation around 2024. The planned mission life is 10 years, and the life can be continuously extended through maintenance.
China’s Sky Survey Space Telescope The Sky Survey Space Telescope will operate in a low-Earth orbit at a height of about 400 kilometers, with a primary mirror diameter of 2 meters. Xu Shuyan, a researcher at the Changchun Institute of Optics and Mechanics of the Chinese Academy of Sciences, the chief designer of the survey optics facility: The characteristics of this space survey telescope are that it can see deeply, see widely, and see finely. On the basis of the same depth and precision, it is more than 300 times wider than the Hubble telescope. Under the same conditions, Hubble can see 1 star, and our space survey telescope can see 300 stars. According to reports, the detectors of the Hubble Telescope Camera are the size of a palm, while the main focal plane of the China Space Station Telescope Sky Survey Module is made up of 30 detectors, each of which is larger than the Hubble detector. Among them, 18 detectors are equipped with different filters, which can obtain color images of cosmic objects in different wavelength bands; the other 12 detectors are used for seamless spectral observation, and on average, at least thousands of celestial objects can be obtained per exposure. Spectral…
The Sky Survey Space Telescope (CSST) is expected to launch no earlier than the end of 2024, and is likely to be delayed until 2025.
Figure 1: CSST Optical Facilities Structure HD Rendering v1.1
Figure 2: Schematic diagram of CSST main optical system
Figure 4: Schematic diagram of CSST in Chang 5 B fairing
Figure 6: The overall structural model of the CSST sky survey module
Currently中国空间站 Previously On December 2021, the Belt and Road InitiativeCNSA –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 ….. with among with more Shenzhou crew to arrive to finished construction of the China Space Station in which there’s more additional modules that could be detach and reattach itself as mission criteria required.
Featuring the Sky Survey Optical Module has both sky and land survey capabilities, and can also be used as a remote sensing satellite] The Sky Survey Optical Module is equipped with a large telescope with a diameter of 2 meters. The observation wavelength range of the Sky Survey is 255~1000 nanometres, covering from, and visible light to near-infrared band. The optical module of the Sky Survey will not only fill the gap in my country’s space astronomical observation, but also achieve a resolution close to that of the Hubble Telescope and a field of view two orders of magnitude larger than that of the Hubble Telescope, and can quickly complete large-scale multicolour imaging and seamless spectral surveys. .
The superiority of the Sky Surveyor’s optical cabin is inseparable from its innovative design. In addition to a Cook-type off-axis three-reflection optical system with a diameter of 2 meters, the optical cabin also adds a folding mirror to facilitate switching between different optical loads, focusing, and precise image stabilization. The off-axis three-reflection is an excellent optical design. It is not only conducive to the realization of a large field of view, but also has no unavoidable optical path obstruction in the coaxial reflection optical system of the Hubble and Webb telescopes. Advantages, there is no diffraction problem caused by mirror support, and the optical imaging quality is higher. The Sky Survey Optical Module will also be the first space telescope in my country to use active optics. By actively adjusting the deformation of the secondary mirror, the imaging quality of the telescope can be further improved.
In addition, the optical module of Tian Xun can not only fly autonomously, but also has high attitude adjustment accuracy, and also has the ability to actively rendezvous and dock the space station. It can receive propellant replenishment while docked at the space station, and maintain, repair and upgrade equipment. Compared with the Hubble Space Shuttle that needs to be launched for every maintenance, the co-orbit flight of the Sky Surveyor’s optical module and the orbit maintenance design of the space station have better maintenance efficiency and cost-effectiveness.
In addition, the optical cabin also has the ability to survey the sky and land, and can be used as a remote sensing satellite. This design concept is a world first.
According to the plan, the optical module and the space station will fly in the same orbit, which is mainly used for astronomical observation, taking into account the ability to observe the earth. It can provide a sky survey observation capability with a resolution roughly equivalent to that of the Hubble telescope but with a field of view more than 300 times larger. The performance of the optical system is also one of the few in the world’s new generation of space telescopes. In addition, the sensor of the optical module is also remarkable. It is equipped with five payloads, including a sky survey camera, an integral field of view spectrometer, a multi-channel imager, an exoplanet imaging coronagraph, and a terahertz receiver. In addition to the fast survey capabilities of the exoplanet imaging coronagraph, it also adds the ability to detect and study exoplanets.
The main task of the optical module of the Sky Survey is to survey the sky. The researchers plan to conduct multi-color imaging observations of 17,500 square degrees, as well as seamless spectral observations in the same sky area, as well as 400 square degrees of multi-color imaging deep-field observations. and seamless spectral deep-field observations in the same sky region.
In addition, it will also study the formation and evolution of cosmic celestial bodies through observations of galaxies and active galactic nuclei, as well as nearby universes and stars. It can also be used to observe a large number of faint and small celestial bodies in the solar system, as well as observe and study transient sources. In the next 10 years of sky survey and observation missions, the sky survey optical module is expected to rely on its excellent performance to observe and analyze and reveal the mechanism of the accelerated expansion of the universe, and even bring unexpected major scientific discoveries.
