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Poland (1473 - 1543)
Nicolaus Copernicus was the first astronomer to formulate a scientifically based heliocentric cosmology that displaced the Earth from the center of the universe. His epochal book, De revolutionibus orbium coelestium (On the Revolutions of the Celestial Spheres), is often regarded as the starting point of modern astronomy and the defining epiphany that began the Scientific Revolution.

Professional astronomers use large telescopes all over the world, and even in space. Most of the largest ground-based reflecting telescopes are concentrated in Hawaii, Chile, and the Canary Islands that take advantage of the dark skies and superior seeing conditions created by high elevations, dry and steady airflow, and great distances from city lights. You will also find large relfecting telescopes in the United States (California, Arizona and Texas among other states), South Africa, Russia, Australia, China and other countries. Check out this list of large reflecting telescopes with primary mirrors that range in size from 15 to 2.2 meters in diameter for one that might be located near you, or plan your next vacation to visit one.

To view the details of any telescope in this list, please click on the name of the telescope. You can also sort the telescopes, by clicking on the table headings.

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Telescope Location Country
AEOS Maui, Hawaii USA 3.67
Hubble Space Telescope Low Earth orbit USA 2.4
Lijiang Lijiang City China 2.4
Magellan - Walter Baade La Serena Chile 6.5
Magellan - Landon Clay La Serena Chile 6.5
du Pont La Serena Chile 2.5
Gran Telescopio Canarias La Palma, Canary Islands Spain 10.4
William Herschel La Palma, Canary Islands Spain 4.2
Telescopio Nazionale Galileo La Palma, Canary Islands Spain 3.58
Isaac Newton La Palma, Canary Islands Spain 2.5
Nordic Optical La Palma, Canary Islands Spain 2.5
Herschel Space Telescope L2 orbit EU 3.5
Mayall Kitt Peak, Arizona USA 3.8
WIYN Kitt Peak, Arizona USA 3.5
Hiltner Kitt Peak, Arizona USA 2.4
Bok Kitt Peak, Arizona USA 2.3
Starfire Kirtland AFB, New Mexico USA 3.5
Vainu Bappu Kavalur India 2.3
WIRO Jelm Mountain, Wyoming USA 2.3
Shajn Crimea Ukraine 2.6

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