Haier Telescope isPalomar ObservatoryThe largest telescope, this 200 inch (5 meter) telescopeHaierTo name.The 200 inch (5 meter) telescope was the largest telescope in the world after it was completed in 1948 and until BAT-6 began to operate in 1975.However, BAT-6 has a big defect. Its analytical power is not as good as Haier's 0.0025Angular second, until 1993Keck 1 telescopeOnly when it is completed can it be surpassed.
American astronomer George E. Hale (1868-1938) successfully persuaded and got sponsorship from the Carnegie Society in Washington, D.CMount Wilson ObservatoryThe telescope: built a 60 inch (1.5 meter) telescope in 1908 and a 100 inch (2.5 meter) telescope in 1917.These telescopes were so successful that in the 1920suniverseThe understanding of scale is growing rapidly, and shows that people with foresight like Haier need larger telescopes to collect information.
Creation and site selection
Announce
edit
In 1928, HaierThe Rockefeller Foundation With a subsidy of US $6 million, under the management of the California Institute of Technology, which he participated in the creation of, he built a 200 inch (5 meter) observatory with a 200 inch reflector.In the early 1930s, Haier choseCaliforniasan diego The 1700 meter (5600 foot) high Palomar Mountain, the best place in the United States, is almost completely untouchedLos AngelesAnd other urban centers are growinglight pollutioninfluence.
Haier telescope
Corning Glass FactorySelected as newPyrex glassThe arduous task of manufacturing 200 inch (5 meters) lenses.Since 1936, the facility engineering of observation station and health value has been started, butthe Second World WarThe telescope was not completed until 1948.
This 200 inch Hale telescope was completed on January 26, 1949Harper The results were published in theCollier S Magazine On.
havedecorative artThe dome of Haier Telescope opened in the dusk.On every clear nightCornell UniversityandJet Propulsion LaboratoryOur astronomers and co operating partners will use it for continuous research.It is equipped with modern optical and infrared array images, spectrometers andadaptive optics System.It also usesLucky cam, and adjust the optical driven lens to make its analytical force approach the theoretical limit value in the observation of some items.
Manufacture of accessories
Announce
edit
reflector
HaierCorning Glass FactoryInvented in 1934Pyrex glassMelt cast 200 inch reflector.After cooling, it was transported to Barcelona, California by railway. In Barcelona, it continued to be processed, manufactured, ground and polished.[1]It still holds the title of the second largest telescope made of a single piece of glass.
Haier's 14.5 ton lens is a major achievement of technology in the 20th century, but it is almost close to the maximum limit that a single lens can still maintain its rigidity. When the telescope is turned to different positions, large lenses will sag slightly due to their own weight, changing the accuracy of surface shape,The accuracy of the lens must be kept within 2 millionths of an inch (25nanometer）。The subsequent successfully constructed lenses solved this problem by using a different design from the traditional ones. They used a single thin lens or a mirror group composed of many flexible small lenses, whose shape can be controlled by a computerServoThe system establishes automatic control of internal supporting cells.
Trestle
Haier TelescopeTelescope standIn the form ofSailuli trussIt was invented by Marcello of the California Institute of Technology in 1935 (seeEquatorial）。
development history
Announce
edit
A Glimpse of Modern Large Reflective Telescope From the birth of the 5-meter Haier Telescope in 1948 to the completion of the 10-meter diameter Keke I in 1990, a series of large reflective telescopes have been built by famous observatories all over the world. Although none of them has a better performance than the Haier Telescope, they play a huge role as an observation weapon in astrophysics,This is especially true in recent years when modern optical equipment and adaptive optics systems have been equipped on these facilities.
In chronological order, we will give a brief introduction to some of the more important large reflecting telescopes and their observatories, from which we can get a glimpse of modern large reflecting telescopes.
Shane Telescope 3.05m In 1959, a 3.05m (120 inch) reflecting telescope was installed at the peak of the valley of the Lick Observatory. It used a piece of disk glass that had been poured in Corning and prepared for the final shaping of the great Haier telescope.
In memory of Charles Donald Shane (1895-1983), an American astronomer and director of the Lick Observatory, this telescope was named Shane Telescope in 1979.The most famous feature of this telescope is that it is the first to install adaptive optics and laser guide star system[2]
