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Refracting telescope. A refracting telescope (also called a refractor) is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope). The refracting telescope design was originally used in spyglasses and astronomical telescopes but is also used for long-focus camera lenses.
The history of the telescope can be traced to before the invention of the earliest known telescope, which appeared in 1608 in the Netherlands, when a patent was submitted by Hans Lippershey, an eyeglass maker. Although Lippershey did not receive his patent, news of the invention soon spread across Europe. The design of these early refracting ...
Hans Lipperhey[a] (c. 1570 – buried 29 September 1619), also known as Johann Lippershey or simply Lippershey, [b] was a German - Dutch spectacle-maker. He is commonly associated with the invention of the telescope, because he was the first one who tried to obtain a patent for it. [1] It is, however, unclear if he was the first one to build a ...
The telescope is more a discovery of optical craftsmen than an invention of a scientist. [1] [2] The lens and the properties of refracting and reflecting light had been known since antiquity, and theory on how they worked was developed by ancient Greek philosophers, preserved and expanded on in the medieval Islamic world, and had reached a significantly advanced state by the time of the ...
1732 – Indian observatories of Sawai Jai Singh at Varanasi, Ujjain, Mathura, Madras. 1733 – Chester Moore Hall invents the achromatic lens refracting telescope. 1734 – Indian observatory of Sawai Jai Singh at Jaipur. 1753 – Real Observatorio de Cádiz (Spain) 1753 – Vilnius Observatory at Vilnius University, Lithuania.
1860 — Georg Simon Plössl produces his eponymous eyepiece. 1880 — Ernst Abbe designs the first orthoscopic eyepiece (Kellner's was solely achromatic rather than orthoscopic, despite his description). 1897 — Largest practical refracting telescope, the Yerkes Observatorys ' 40 inch (101.6 cm) refractor, is built.
There are claims Leonard Digges independently invented the reflecting telescope, and/or the refracting telescope as part of his need to see accurately over long distances during his surveying works. [ 3 ] [ 4 ] In the preface to the 1591 Pantometria, (a book on measurement, partially based on his father's notes and observations) Leonard's son ...
He also invented an improved version of the refracting telescope, the Keplerian telescope, which became the foundation of the modern refracting telescope, [13] while also improving on the telescope design by Galileo Galilei, [14] who mentioned Kepler's discoveries in his work.