1. Canary Large Telescope The mirror is 10.4 meters in diameter and consists of 36 custom-made hexagonal mirror assemblies. The installation should be accurate to 1mm. so to speak, this guy is not too "expensive" to build. The early investment is up to $175 million.
2. Keck Telescope They are two identical telescopes, each consisting of 36 hexagonal mirror assemblies, located on top of Mauna Kea in Hawaii. The total diameter of the mirrors is 10 meters, each mirror is 1.8 meters in diameter and only 10 cm thick. The mirrors are maintained at a high level of precision by an active optical support system.
3. South African Large Telescope It consists of 91 mirrored hexagonal components, and the actual effective diameter of the entire mirror is 10 meters. The telescope was first put into service in 2005, and it can detect the faint light on the far side of the Moon like a candle.
4. Hobby-Eberly Telescope It consists of 91 hexagonal mirror modules with a diameter of 1m,[bai] with continuous binning by a small computer-controlled motor. The total diameter of the mirrors can reach 11m, but only 9.2m is actually available.
5. Large Binoculars Large Binoculars, or LBT for short. it consists of two adjacent 8.4 diameter telescopes. They can work individually. When they are gathered together, they are like a larger telescope.
6. Pleiades Telescope This telescope has a diameter of 8.2 meters. It is an optical/visible infrared telescope. It has three features:First, the reflector is very thin and achieves high imaging quality through active optics and adaptive optics;2. High precision tracking is possible;3. The cylindrical observation chamber is automatically controlled with ventilation and air filters to eliminate heat flow to the best condition.
7. European Southern Observatory Very Large Telescope Interferometer It is located in Cerro Paraná Mountain, Chile, consists of four telescopes with a diameter of 8.2 meters, each telescope can work independently or form a very large telescope interferometer. This joint astronomical observation will be able to detect cosmic light that is 4 billion times fainter than the visible light of the human eye.
8. Twin Telescopes The telescope in the northern hemisphere works in conjunction with other telescopes at Mauna Kea, Hawaii, and the telescope in the southern hemisphere is located in the Cerro Parana Mountains, Chile. These telescopes are located in both hemispheres to allow for all-weather systematic observations.
9. Multi-mirror telescope It is located in Hopkins Hill, Tucson, Arizona, USA, and is quite an artistic house. It does not have the dome structure of a traditional observatory, but the unique shape makes the walls and top of the observatory integrated with the telescope, which can quickly cool the telescope and improve observation efficiency.
10. Magellan 1 and 2 Telescopes These two telescopes are located 200 feet apart in the Atacama Desert of Chile. The telescope's 6.5-meter diameter reflector floats on a high-pressure oil film with little friction. Even a child can push the 150-ton telescope.
