What German-Dutch spectacle-maker associated with Jacob Metius is associated with the invention of the telescope?
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Jacob Metius Jacob (Jacobus; sometimes James) Metius (after 1571–1624/1631) was a Dutch instrument-maker and a specialist in grinding lenses. He was born and died in Alkmaar and was the brother of Adriaan Adriaanszoon (simply called Metius). He is one of three people associated with the invention of the telescope, the other two being Hans Lippershey and Zacharias Janssen. Not much of him is known besides his 1608 patent application for the invention. He died in Alkmaar between 1624 and 1631. Metius may have made many inventions but kept them secret. Before his death he destroyed them all to prevent anyone else from claiming them.
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Hans Lippershey Hans Lippershey (1570 – buried 29 September 1619), also known as Johann Lippershey or Lipperhey, 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. It is however unclear if he was the first one to build a telescope.
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Nonius (device) Nonius is a measuring tool used in navigation and astronomy named in honour of its inventor, Pedro Nunes (Latin: Petrus Nonius), a Portuguese author, mathematician and navigator. The nonius was created in 1542 as a system for taking finer measurements on circular instruments such as the astrolabe. The system was eventually adapted into the vernier scale in 1631 by the French mathematician Pierre Vernier.
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Jacob Heinrich Wilhelm Lehmann Jacob Heinrich Wilhelm Lehmann (3 January 1800 – 17 July 1863) was a German astronomer. He is most noted today as the namesake for the crater Lehmann on the Moon.
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Johannes Fabricius Johann Goldsmid, better known by his Latinized name Johann(es) Fabricius (8 January 1587 – 19 March 1616), eldest son of David Fabricius (1564–1617), was a Frisian/German astronomer and a discoverer of sunspots (in 1610), independently of Galileo Galilei.
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Simon Marius Simon Marius (Latinized from German "Simon Mayr"; January 20, 1573 – January 5, 1625) was a German astronomer. He was born in Gunzenhausen, near Nuremberg, but he spent most of his life in the city of Ansbach.
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Johann Heinrich Lambert Johann Heinrich Lambert (] , "Jean-Henri Lambert" in French; 26 August 1728 – 25 September 1777) was a Swiss polymath who made important contributions to the subjects of mathematics, physics (particularly optics), philosophy, astronomy and map projections.
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Martin Behaim Martin Behaim (6 October 1459 – 29 July 1507), also known as Martin von Behaim and by various forms of Martin of Bohemia (Latin: "Martinus Bohemus" and "de Boëmia "; Portuguese: "Martinho da Boémia" ; German: "Martin Behaim von Schwarzbach" ) was a German mariner, artist, cosmographer, astronomer, philosopher, geographer, and explorer in service to King John II. His maps are sometimes held to have been influential on the Age of Discovery but he is now best known for his Erdapfel, the world's oldest surviving globe, which he produced for the Imperial City of Nuremberg.
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Karl Wilhelm Feuerbach Karl Wilhelm von Feuerbach (30 May 1800 – 12 March 1834) was a German geometer and the son of legal scholar Paul Johann Anselm Ritter von Feuerbach, and the brother of philosopher Ludwig Feuerbach. After receiving his doctorate at age 22, he became a professor of mathematics at the Gymnasium at Erlangen. In 1822 he wrote a small book on mathematics noted mainly for a theorem on the nine-point circle, which is now known as Feuerbach's theorem. In 1827 he introduced homogeneous coordinates, independently of Möbius.
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Carl Friedrich Gauss Johann Carl Friedrich Gauss ( ; German: "Gauß" , ] ; Latin: "Carolus Fridericus Gauss" ) (30 April 177723 February 1855) was a German mathematician who contributed significantly to many fields, including number theory, algebra, statistics, analysis, differential geometry, geodesy, geophysics, mechanics, electrostatics, magnetic fields, astronomy, matrix theory, and optics.
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The Geographer The Geographer is a painting created by Dutch artist Johannes Vermeer in 1668–1669, and is now in the collection of the Städelsches Kunstinstitut museum in Frankfurt, Germany. It is closely related to Vermeer's "The Astronomer", for instance using the same model in the same dress, and has sometimes been considered a pendant painting to it. A 2017 study indicated that the canvas for the two works came from the same bolt of material.
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Ahasuerus Fromanteel Ahasuerus Fromanteel (25 February 1607 – 31 January 1693) was a clockmaker, the first maker of pendulum clocks in Britain.
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Otto Boeddicker Otto Boeddicker (1853–1937) was a German astronomer. He published drawings of naked-eye observations of the Milky Way in 1892, made over a period of six years. He also observed the Moon, including the emitted heat during a total eclipse of the Moon.
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Heinrich Geißler Johann Heinrich Wilhelm Geißler (26 May 1814 in Igelshieb – 24 January 1879) was a skilled glassblower and physicist, famous for his invention of the Geissler tube, made of glass and used as a low pressure gas-discharge tube.
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Evangelista Torricelli Evangelista Torricelli (] ,    ); 15 October 1608 – 25 October 1647) was an Italian physicist and mathematician, best known for his invention of the barometer, but is also known for his advances in optics and work on the method of indivisibles.
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Kunitomo Ikkansai Kunitomo Kosunaki (国友 一貫斎 , November 21, 1778 – December 26, 1840) was a Japanese gun manufacturer of the early 19th century, who, after having spent several months in Edo, where he could get accustomed with Dutch wares, built Japan's first reflective telescope in 1831. It was of the Gregorian type.
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Jacques Beckers Jacques Maurice Beckers (born 14 February 1934) is a Dutch-born American astronomer. He was director of the National Solar Observatory between 1993 and 1998. Beckers worked mainly in the field of astrophysics and astronomical optometry.
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Opera glasses Opera glasses, also known as theater binoculars or Galilean binoculars, are compact, low-power optical magnification devices, usually used at performance events, whose name is derived from traditional use at opera performances. Magnification power below 5× is usually desired in these circumstances in order to minimize image shake and maintain a large enough field of view. A magnification of 3× is normally recommended. The design of many modern opera glasses of the ornamental variety is based on the popular lorgnettes of the 19th century.
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Jacob Auch Jacob Auch was a skillful German mechanic, instrument and clock-maker, born on 22 February 1765, in Echterdingen, a town near Stuttgart. In Echterdingen from 1781 till 1790 served the famous Philipp Matthäus Hahn. The young Jacob was an apprentice of Hahn and worked in his workshop. From 1787 Auch opened his own workshop in Vaihingen an der Enz, where he worked till 1798, and from 1798 till 1842 served as a ducal mechanic (herzoglicher Hofuhrmacher) at the Weimar court. He is well known as the author of two books for watchmaking, one of the books—Handbuch für Landuhrmacher, was published first time in 1827 and reprinted many times during the next century.
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Leica Camera Leica Camera AG is a German company that manufactures optics and high end cameras. The company was founded by Ernst Leitz in 1924. The name Leica is derived from the first three letters of his surname (Leitz) and the first two of the word camera: lei-ca.
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Andreas Cellarius Andreas Cellarius (c. 1596, Neuhausen, – 1665, Hoorn) was a Dutch-German cartographer, best known for his "Harmonia Macrocosmica" of 1660, a major star atlas, published by Johannes Janssonius in Amsterdam.
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Obsession Telescopes Obsession Telescopes is an American telescope manufacturer that specializes in Dobsonian telescopes. Founded in 1989 by David Kriege, the company is based in Lake Mills, Wisconsin. It sells large aperture telescopes throughout the world. An example of a telescope they have produced is a Dobsonian with a 12.5 inch mirror. They have also produced telescopes with computerized positioning. The company is noted as a pioneer in amateur astronomy and is an important and the most major producer of Dobsonian telescopes. Around 1987 the founder, Kriege, went to a star party and experienced a Dobsonian telescope, and then built Obsession 1 at this time astronomy was a hobby (this is before founding OT). The style of telescope was unique early on but over time became more popular. One style of Dobsonian the company developed is an ultra-compact style. The Dobsonians are a big deal to amateur astronomers because they offer a big aperture compared to the cost of the telescope and its mobility. This allows the telescopes to be taken to star parties, where amateur astronomers gather at night to use their scopes together. Telescopes from OT have also been used for astrophotography.