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List Of Largest Optical Refracting Telescopes
Refracting telescopes use a lens to focus light. The largest refracting telescope in the world is the Yerkes Observatory 40 inch (102 cm) refractor, used for astronomical and scientific observation for over a century. The Swedish 1-m Solar Telescope, which has an actual lens diameter of 43 inches, is technically then larger than the lens of the Yerkes, but only 39 inches are clear for the aperture, and is used today for solar observations .The next largest refractor telescopes are the James Lick telescope, and the Meudon Great Refractor. Most are classical great refractors, which used achromatic doublets on an equatorial mount. However, other large refractors include a 21st-century solar telescope which is not directly comparable because it uses a single element non-achromatic lens, and the short-lived Great Paris Exhibition Telescope of 1900. It used a 78-inch (200 cm) Focault siderostat for aiming light into the Image-forming optical system part of the telescope, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grande Coupole De Meudon
Grande means "large" or "great" in many of the Romance languages. It may also refer to: Places * Grande, Germany, a municipality in Germany *Grande Communications, a telecommunications firm based in Texas *Grande-Rivière (other) *Arroio Grande (other) * Boca grande (other) *Campo Grande (other) *El Grande, a German-style board game *Loma Grande (other) *Lucida Grande, a humanist sans-serif typeface *María Grande, a village and municipality in Entre Ríos Province in northeastern Argentina *Mojón Grande, a village and municipality in Misiones Province in northeastern Argentina *Playa Grande (other) * Ribeira Grande (other) *Rio Grande (other) * Salto Grande (other) *Valle Grande (other) * Várzea Grande (other) *Villa Grande (other) *Casa Grande Ruins National Monument *Casas Grandes *Mesa Grande *Pueblo Grande de Nevada *Pueblo Grande Ruin and Irrigation Sites *Campina Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Palma
La Palma (, ), also known as ''La isla bonita'' () and officially San Miguel de La Palma, is the most north-westerly island of the Canary Islands, Spain. La Palma has an area of making it the fifth largest of the eight main Canary Islands. The total population at the end of 2020 was 85,840, of which 15,716 lived in the capital, Santa Cruz de La Palma and about 20,467 in Los Llanos de Aridane. Its highest mountain is the Roque de los Muchachos, at , being second among the peaks of the Canaries only to the peaks of the Teide massif on Tenerife. In 1815, the German geologist Leopold von Buch visited the Canary Islands. It was as a result of his visit to Tenerife, where he visited the Las Cañadas caldera, and then later to La Palma, where he visited the Taburiente caldera, that the Spanish word for cauldron or large cooking pot – "caldera" – was introduced into the geological vocabulary. In the center of the island is the Caldera de Taburiente National Park; one of four nation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potsdam Great Refractor
Potsdam Great Refractor (Große Refraktor) is an historic astronomical telescope in an observatory in Potsdam, Germany. Completed in 1899, it is a double telescope for astronomy, a great refractor with two objectives of different size on the same equatorial mount. One lens in 80 cm in aperture and the other is 50 cm. The 80 cm diameter lens was designed for astrophotography, and the 50 cm diameter lens for visual work. The telescope was made by Repsold,. The objective lens glass blanks were made in Jena by Schott, and the lenses figured by Steinheil of Munich. History An observatory had been established in the late 1870s near Potsdam, and had gained notice for its work on photographic spectroscopy of stars. A new telescope was acquired by 1899, to continue this work and by 1904 the interstellar medium was discovered spectroscopically. The telescope mostly survived to the 21st century with an archive of photographic plates, and is a popular tourist destination i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grande Lunette De L'Observatoire De Meudon
Grande means "large" or "great" in many of the Romance languages. It may also refer to: Places *Grande, Germany, a municipality in Germany *Grande Communications, a telecommunications firm based in Texas *Grande-Rivière (other) *Arroio Grande (other) * Boca grande (other) *Campo Grande (other) *El Grande, a German-style board game *Loma Grande (other) *Lucida Grande, a humanist sans-serif typeface *María Grande, a village and municipality in Entre Ríos Province in northeastern Argentina *Mojón Grande, a village and municipality in Misiones Province in northeastern Argentina *Playa Grande (other) * Ribeira Grande (other) *Rio Grande (other) * Salto Grande (other) *Valle Grande (other) * Várzea Grande (other) *Villa Grande (other) *Casa Grande Ruins National Monument *Casas Grandes *Mesa Grande *Pueblo Grande de Nevada *Pueblo Grande Ruin and Irrigation Sites *Campina Gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meudon, France
Meudon () is a municipality in the southwestern suburbs of Paris, France. It is in the département of Hauts-de-Seine. It is located from the center of Paris. The city is known for many historic monuments and some extraordinary trees. One of them, the Imperial Cedar (), attracted the attention of Empress Eugénie and Queen Victoria. As of March 2021, the tree is in good condition, but it is threatened by real estate speculation. Another real estate project is planned for the historic park of the Napoleon III villa built by Charles Schacher. Both projects are controversial and have aroused local opposition. Geography The town of Meudon is built on the hills and valleys of the Seine. The wood of Meudon lies for the most part to the west of the town. The north-west part of Meudon, overlooking the Seine, is known as ''Bellevue'' ("beautiful view"). History At Meudon, the argile plastique clay was extensively mined in the 19th century. The first fossil of the European diatryma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris Observatory
The Paris Observatory (french: Observatoire de Paris ), a research institution of the Paris Sciences et Lettres University, is the foremost astronomical observatory of France, and one of the largest astronomical centers in the world. Its historic building is on the Left Bank of the Seine in central Paris, but most of the staff work on a satellite campus in Meudon, a suburb southwest of Paris. The Paris Observatory was founded in 1667. Construction was completed by the early 1670s and coincided with a major push for increased science, and the founding of the Royal Academy of Sciences. King Louis XIV's minister of finance organized a "scientific powerhouse" to increase understanding of astronomy, maritime navigation, and science in general. Through the centuries the Paris Observatory has continued in support of astronomical activities, and in the 21st century connects multiple sites and organizations, supporting astronomy and science, past and present. Constitution Administrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lick Observatory Refractor
Lick may refer to: * Licking, the action of passing the tongue over a surface Places * Lick (crater), a crater on the Moon named after James Lick * 1951 Lick, an asteroid named after James Lick * Lick Township, Jackson County, Ohio, United States People * Lick (surname), people with "Lick" as a surname ** Dennis Lick (born 1954), American professional football lineman ** James Lick (1796–1876), American carpenter, land baron, and patron of the sciences * J. C. R. Licklider (1915–1990), American computer scientist, nicknamed "Lick" Music * ''Lick'' (album), by The Lemonheads * Lick (band), an American band, fl. 1990s * Lick (music), a short phrase, or series of notes, often improvised by a musician ** The Lick, a jazz lick, commonly known as 'The Lick' * "Lick" (Joi song), 2002 * "Lick" (Shenseea and Megan Thee Stallion song), 2022 Nature * Lick (stream), a small or ephemeral stream * Salt lick, a salt deposit that animals regularly lick Other uses * Lick's Home ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Hamilton (California)
Mount Hamilton is a mountain in the Diablo Range in Santa Clara County, California, Santa Clara County, California. The mountain's peak, at , overlooks the heavily urbanized Santa Clara Valley and is the site of Lick Observatory, the world's first permanently occupied mountain-top observatory. The asteroid 452 Hamiltonia, discovered in 1899, is named after the mountain. Golden eagle nesting sites are found on the slopes of Mount Hamilton. On clear days, Mount Tamalpais, the Santa Cruz Mountains, Monterey Bay, the Monterey Peninsula, and even Yosemite National Park are visible from the summit of the mountain. History On August 26, 1861, while working for Josiah Whitney, Josiah D. Whitney on the first California Geological Survey, William Henry Brewer, William H. Brewer invited local San Jose, California, San Jose preacher (and Brewer's personal friend) Laurentine Hamilton to join his company on a hiking, trek to a nearby Topographical summit, summit. Nearing completion of their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lick Observatory
The Lick Observatory is an astronomical observatory owned and operated by the University of California. It is on the summit of Mount Hamilton, in the Diablo Range just east of San Jose, California, United States. The observatory is managed by the University of California Observatories, with headquarters on the University of California, Santa Cruz campus, where its scientific staff moved in the mid-1960s. It is named after James Lick. The first new moon of Jupiter to be identified since the time of Galileo was discovered at this observatory; Amalthea, the planet's fifth moon, was discovered at this observatory in 1892. Early history Lick Observatory is the world's first permanently occupied mountain-top observatory. The observatory, in a Classical Revival style structure, was constructed between 1876 and 1887, from a bequest from James Lick of $700,000, . Lick, originally a carpenter and piano maker, had arrived from Peru in San Francisco, California, in late 1847; after ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerkes 40 Inch Refractor Telescope-2006 , on the moon
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Yerkes may refer to: *Yerkes (surname), notable people with this surname *Yerkes, Kentucky *Yerkes, Pennsylvania * Yerkes Observatory, an astronomical observatory of the University of Chicago ** Yerkes luminosity classification of stars ** Yerkes scheme of galaxy morphological classification * Yerkes National Primate Research Center, one of eight national primate research centers funded by the National Institutes of Health, located in Atlanta, Georgia at Emory University * Yerkes–Dodson law, an empirical relationship between arousal and performance first noted by Robert M. Yerkes and John Dillingham Dodson * 990 Yerkes, main belt asteroid * Yerkes (crater) Yerkes is a lunar impact crater near the western edge of Mare Crisium. It was named after American financier Charles Yerkes. To the east of Yerkes is the crater Picard, and farther to the north is Peirce. In the past the interior of this crat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Williams Bay, Wisconsin
Williams Bay is a village in Walworth County, Wisconsin, Walworth County, Wisconsin, United States. It is one of three municipalities on Geneva Lake. The population was 2,564 at the 2010 United States Census, 2010 census. History The village was named for Captain Israel Williams of Massachusetts, who, with several of his sons, settled in the area in 1837. Much of the surrounding area was settled in the early 19th century by surveyors plotting roadways from the Eastern United States, East. Williams Bay became a vacation spot for wealthy Chicagoans displaced by the Great Chicago Fire of 1871. The village continues to attract vacationers from Chicago, Illinois, Chicago, Milwaukee, Wisconsin, Milwaukee and elsewhere. In 1873, mail jumping was established on Geneva Lake as a means to provide postal service to lakeside homes. The tradition continues today. Each year between June 15 and September 15, jumpers deliver mail to piers along the lake on behalf of the United States Postal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
