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How it all Became...
Dutch eyeglass maker Hans Lippershey is very well known to be the first person to invent a telescope in, 1608. according to Hans, his device, called a kijker ("looker"), was able to magnify an image up to three times. this text told us that, "It consisted of a concave eyepiece that was aligned with another convex objective lens (interestingengineering.com)." -
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Great Minds Think Alike
Jacob Metius also claimed the invention of the telescope shortly after Lippershey. When he also applied for the copyrights , both applications were rejected because of the counterclaims and the official's opinion that it was easy to reproduce. Both men later received rewards. "Metius receiving a nominal sum, and Lippershey was awarded a significant commission to make copies of his telescope (interestingengineering.com)." -
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Improvement Thanks to Galileo
Galileo made his first telescope modeled after telescopes produced in other parts of Europe that could magnify objects three times, but gave it an extra boost. He created a telescope that could magnify objects twenty times. "With this telescope, he was able to look at the moon, discover the four satellites of Jupiter, observe a supernova, verify the phases of Venus, and discover sunspots (http://galileo.rice.edu/)." along with many other things. -
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The First Reflecting Telescope
Sir Isaac Newton later built on the work of the ones before him, mainly Kepler, because maybe telescopes should use a series of mirrors instead of lenses. Newton believed that this issue could never actually be cured in refracting telescopes and decided to find a new solution. Newton's idea was to use "a large concave primary mirror focusing light onto a smaller flat diagonal mirror that projected an image into an eyepiece on the side of the telescope (interestingengineering.com)." -
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Small Changes
For the next 60 years or so, minor improvements were made to the technology by the likes of Laurent Cassegrain (who introduced hyperbolic and parabolic mirrors) and John Hadley (who improved Newton's model). -
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Chester Moore Hall Figured it out
An Englishman, Chester Moore Hall, greatly lessened the chromatic aberration of refracting telescopes when he introduced a new form of a lens. This lens consisted of two types of glass, the crown, and flint, that were connected together. With this development, Hall proved that Isaac Newton was "in error with his proposition that color distortion could not be solved using refracting rather than reflecting telescopes (interestingengineering.com)." -
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The Herschelian Telescope
Herschel found a way to fix an issue with the bad reflective quality of "speculum metal" generally used in Newtonian Telescopes. He did this by "simply omitting the diagonal mirror completely and tilted the primary mirror to allow the user to directly view it. interestingengineering.com" This would come to be known as the Herschelian telescope. -
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The Yerkes Observatory became the world's largest refracting telescope at the time
This telescope became the largest size of refracting telescopes. It used the biggest lenses possible before the entire
thing would fall by its own weight. "The telescopes lens is an impressive 102 cm diameter doublet lens which is still the largest of its kind used for astronomy. interestingengineering.com" Many astronomers finally realized that the future of large telescopes had to use mirrors insted of lenses, Partly because of this. -
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The Merry-Go-Round Telescope
Jansky built an lot of dipoles and reflectors that were designed to "receive a shortwave radio signal at around 20.5 MHz. interestingengineering.com"The entire thing was set up on a turntable allowing it to turn a full 360 degrees. as it became known as Jansky's "merry-go-round", it measured 30 meters in diameter and 6 meters tall. -
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Space Telescope
"In 1990, NASA and ESA co-operated to build and deploy the Hubble Space Telescope making it one of the first telescope to be launched into space." Although it's not the first space telescope, Hubble has is one of the largest and most flexible. The telescope is made with a 2.4-meter mirror and a lot of other things/ tools to observe "near UV, visible light and near IR spectra." (interestingengineering.com) -
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The Last Big Diffrence
In 1991, a revolutionary space telescope was launched into space with the goal "of detecting photons with energies between 20 keV and 30n GeV. interestingengineering.com" Called the Compton Gamma Ray Observatory (CGRO), it was made of of four telescopes on a single platform that observed X-rays and gamma rays. -
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The Present Telescope
now, with it being 2020, their isn't much else changing with the invention of the telescope, but its still very important to our world. every day, scientists are working on or discovering new things about our universe that we would not of known if the telescope was never invented. This is why I chose this invention.