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Johannes Kepler
Johannes Kepler discovered the principle of the astronomical telescope built with convex lenses. -
James Gregory
The English James Gregory invents the first reflecting telescope with a parabolic primary mirror and a concave and elliptical secondary mirror. -
Isaac Newton
Physicist and mathematician Isaac Newton builds the first reflecting telescope. In 1672 he presented it at the Royal Society of London. -
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Jonh Dollend
The invention of the achromatic objective in 1757 by the British optician John Dollend and the improvement of the optical rock crystal (flint glass) in 1754, soon allowed the construction of highly refined refracting telescopes. -
William Herschel
English astronomer William Herschel tilted the mirror of his telescope and positioned the eyepiece so that it did not block the incident rays -
William Lassel
William Lassel refined Herschel's optics using the Parsons process. He installed the mirror on an equatorial mount with metal lenses speculates. Discovery of satellites like Triton on Saturn, Uranus and Neptune. -
George Ellery Hale
1879
It was built at the University of Chicago thanks to the initiative of the astronomer George Ellery Hale. With a 101 cm diameter lens cast by famed maker Alvan Clark and sons. -
Theory of the expansion of the universe.
Installed in the Monte Wilson observatory (USA). It is a 2.5 meter diameter reflecting telescope.
He discovered new galaxies and helped establish the theory of the expansion of the universe. -
Bernard Schmidt
The German optician Bernard Schmidt invented a telescope combining the reflector and refractor systems that could clearly photograph large areas of the sky. -
First to measure the expansion of the universe.
Hale's telescope has a 5-meter mirror. He discovered quasars, he was the first to measure the expansion of the universe. And it found Comet 1P / Halley, located on Mount Palomar (USA) -
The Multiple Mirror Telescope
The Multiple Mirror Telescope (MMT) combined the light from 6 independent 1.8 meter concave mirrors. -
Keck’s telescope
Keck's telescope is the first with hexagonal telescopes. It reaches galaxies, remote and supernovae. -
The Grantecan
Grantecan is the largest and most powerful telescope in the world that was launched in July.
It is located 2,400 meters at the altitude of the island of Palma.
