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Celestron
Celestron is an American company based in Torrance, California, United States, that manufactures telescopes and distributes telescopes, binoculars, spotting scopes, microscopes, and accessories manufactured by its parent company, the Synta Technology Corporation of Taiwan. History The predecessor of Celestron was Valor Electronics, an electronics and military components firm founded in 1955 by Tom Johnson. Johnson became involved with telescopes when he built a 6" reflecting telescope for his two sons. In 1960, Johnson established the "Astro-Optical" division of Valor, which would later become Celestron. By 1964, Johnson had founded "Celestron Pacific" as a division of Valor Electronics offering Schmidt-Cassegrain telescopes from 4" to 22". In 1970 Celestron introduced its "C8" 8" diameter 2032 mm focal length, ƒ10 telescope, the first of a new line of telescopes built using methods developed by Celestron to produce Schmidt-Cassegrains at a high volume and low cost. These ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tom Johnson (astronomer)
Thomas Jasper Johnson or Tom Johnson (January 11, 1923 – March 13, 2012) was an American electronics engineer and astronomer who founded Celestron, a company which manufacturers telescopes, which revolutionized the amateur astronomy industry and hobby. ''Sky & Telescope'' magazine has called him, "among the most important figures shaping the last half century of amateur astronomy." Johnson was born in 1923. He served as a military radar technician during World War II. In 1955, Johnson, an engineer, established Valor Electronics, which produced electronics for military and industrial use. Valor, which was headquartered in Gardena, California, had more than one hundred employees by the early 1960s. Johnson, who had a strong interest in amateur astronomy, originally created Celestron as the "Astro-Optical" division of Valor Electronics in 1960. Around 1960, Johnson had been looking for a telescope which could be used by his two sons, but found no such child-friendly models on th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasco
Tasco (also known as Tasco Worldwide) sells consumer telescopes. Tasco mainly imports telescopes for amateur astronomers but has expanded into other optical products, such as spotting scopes, microscopes, binoculars, telescopic sights, and other rifle accessories. Tasco sells via retail stores, catalogs, and online retailers. Tasco is based in Miramar, Florida. George Rosenfield founded the firm as the Tanross Supply Company in 1954. It started as a distributor of fishing tackle and hardware. The name was later shortened to Tasco as its offerings expanded to include binoculars and eyepieces. Products Telescopes Tasco's astronomical telescopes have a reputation as entry-level equipment.Philip S. Harrington, Star Ware: The Amateur Astronomer's Guide to Choosing, Buying, and Using Telescopes and Accessories, John Wiley & Sons - 2011, page 80 It is one of several companies advertising their products based on claims of high magnification, far beyond any attainable usable magnific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SkyScout
The Celestron SkyScout was a model of handheld consumer electronic instrument for astronomical orientation and education, similarly to the competitor product mySky by Meade Instruments. The general class of zero-magnification sky-orientation scopes using modern geodesy was made possible by the commercialisation of GPS and other GNSS systems in the early 21st century, and the SkyScout was an early example of such use despite being hampered by technical and price limitations. Specifications Hardware The SkyScout was a handheld, battery powered device about 7.4" x 4.0" x 2.5", and weighing about 1 pound. It had a viewing port, a 3" x 1" LCD display on the side and several buttons for controlling and selecting device functions. The SkyScout had a 12 channel GPS receiver and orientation sensors (whose accuracy was sensitive to proximity to metal objects, indicated by a horseshoe magnet icon on the display) that measured location and pointing angle. The LCD screen (known to scr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synta Technology Corporation Of Taiwan
Synta Technology Corporation of Taiwan (Synta Taiwan), also known as Synta, is a manufacturer of telescopes and optical components headquartered in Taoyuan, Taiwan. Overview Synta Technology Corporation was founded in Taoyuan, Taiwan around 1980 by mechanical and optical designer Dazhong Shen, (a/k/a David Shen). In 1992 Synta, along with Canadian investors, established the Suzhou Synta Optical Technology Co., Ltd in Suzhou (Jiangsu), China (outside Shanghai) as a manufacturing facility producing telescopes for Celestron and Tasco. In 1999 Synta established the brand Sky-Watcher, with head offices in Richmond, British Columbia, to distribute products in Canada and Europe, and in the late 2000s, to the USA market. In 2005 Synta purchased the struggling US based Celestron, continuing its manufacture of Celestron products and running the US facilities through SW Technology Corporation, Synta's Delaware-based holding company. Synta also distributes under the Acuter name and manufactu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schmidt Corrector Plate
A Schmidt camera, also referred to as the Schmidt telescope, is a catadioptric astrophotographic telescope designed to provide wide fields of view with limited aberrations. The design was invented by Bernhard Schmidt in 1930. Some notable examples are the Samuel Oschin telescope (formerly Palomar Schmidt), the UK Schmidt Telescope and the ESO Schmidt; these provided the major source of all-sky photographic imaging from 1950 until 2000, when electronic detectors took over. A recent example is the Kepler space telescope exoplanet finder. Other related designs are the Wright camera and Lurie–Houghton telescope. Invention and design The Schmidt camera was invented by German–Estonian optician Bernhard Schmidt in 1930. Its optical components are an easy-to-make spherical primary mirror, and an aspherical correcting lens, known as a Schmidt corrector plate, located at the center of curvature of the primary mirror. The film or other detector is placed inside the camera, at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meade Instruments
The Meade Instruments (also shortened to Meade) is an American multinational company headquartered in Watsonville, California, that manufactures, imports, and distributes telescopes, binoculars, spotting scopes, microscopes, CCD cameras, and telescope accessories for the consumer market. It is the world's largest manufacturer of telescopes. Besides selling under its "Meade" brand name, the company sells solar telescopes under the brand "Coronado". Origins and history Founded in 1972 by John Diebel, Meade started as a mail order seller of small refracting telescopes and telescope accessories manufactured by the Japan-based Towa Optical Manufacturing Company. Meade started manufacturing its own line of products in 1976, introducing 6" and 8" reflecting telescopes models in 1977. In 1980, the company ventured into the Schmidt-Cassegrain market that up to that time had been dominated by Celestron Corporation. Meade has a long history of litigation with other companies over infrin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telescope
A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. Originally meaning only an optical instrument using lenses, curved mirrors, or a combination of both to observe distant objects, the word ''telescope'' now refers to a wide range of instruments capable of detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors. The first known practical telescopes were refracting telescopes with glass lenses and were invented in the Netherlands at the beginning of the 17th century. They were used for both terrestrial applications and astronomy. The reflecting telescope, which uses mirrors to collect and focus light, was invented within a few decades of the first refracting telescope. In the 20th century, many new types of telescopes were invented, including radio telescopes in the 1930s and infrared telescopes in the 1960s. Etymology The word ''telescope'' was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Binoculars
Binoculars or field glasses are two refracting telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects. Most binoculars are sized to be held using both hands, although sizes vary widely from opera glasses to large pedestal-mounted military models. Unlike a (monocular) telescope, binoculars give users a stereopsis, three-dimensional image: each eyepiece presents a slightly different image to each of the viewer's eyes and the parallax allows the visual cortex to generate an depth perception, impression of depth. Optical designs Galilean Almost from the invention of the telescope in the 17th century the advantages of mounting two of them side by side for binocular vision seems to have been explored. Most early binoculars used Galilean telescope, Galilean optics; that is, they used a convex lens, convex objective (optics), objective and a concave lens, concave eyepiece, eyep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C8 Smaller
C8, C08, C.VIII or C-8 may refer to: Transportation Aviation * AEG C.VIII, a World War I German armed reconnaissance aircraft * AGO C.VIII, a World War I German reconnaissance aircraft * Cierva C.8, a 1926 Spanish experimental autogyro * De Havilland Canada C-8 Buffalo, a military transport aircraft of the 1960s * Fairchild C-8, a military transport aircraft of the 1930s * Fokker C.VIII, a 1928 Dutch reconnaissance aircraft * Chicago Express Airlines (defunct) IATA code Automotive * Citroën C8, a brand of minivan * Sauber C8, a 1985 racing car * Spyker C8, a sportscar produced by car manufacturer Spyker Cars * Eighth generation Chevrolet Corvette (C8) Nautical * HMS ''C8'', a 1907 C-class submarine of the Royal Navy * USS ''Raleigh'' (C-8), an 1892 protected cruiser of the United States Navy Rail * LSWR C8 class, a London and South Western Railway locomotive class * C-8 (Cercanías Madrid) * LNER Class C8, a class of 2 4-cylinder compound locomotives Spa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newtonian Reflector
The Newtonian telescope, also called the Newtonian reflector or just a Newtonian, is a type of reflecting telescope invented by the English scientist Sir Isaac Newton, using a concave primary mirror and a flat diagonal secondary mirror. Newton's first reflecting telescope was completed in 1668 and is the earliest known functional reflecting telescope. The Newtonian telescope's simple design has made it very popular with amateur telescope makers. Description 
A Newtonian telescope is composed of a primary mirror or objective, usually parabolic in shape, and a smaller mirror called the "secondary" which is flat. ...
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Refractor
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. Although large refracting telescopes were very popular in the second half of the 19th century, for most research purposes, the refracting telescope has been superseded by the reflecting telescope, which allows larger apertures. A refractor's magnification is calculated by dividing the focal length of the objective lens by that of the eyepiece. Refracting telescopes typically have a lens at the front, then a long tube, then an eyepiece or instrumentation at the rear, where the telescope view comes to focus. Originally, telescopes had an objective of one element, but a century later, two and even three element lenses were made. Refracting telescope is a technology tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GoTo (telescopes)
{{unreferenced, date=February 2014 In amateur astronomy, "GoTo" refers to a type of telescope mount and related software that can automatically point a telescope at astronomical objects that the user selects. Both axes of a GoTo mount are driven by a motor and controlled by a computer. It may be either a microprocessor-based integrated controller or an external personal computer. This differs from the single-axis semi-automated tracking of a traditional clock-drive equatorial mount. The user can command the mount to point the telescope to the celestial coordinates that the user inputs, or to objects in a pre-programmed database including ones from the Messier catalogue, the New General Catalogue, and even major Solar System bodies (the Sun, Moon, and planets). Like a standard equatorial mount, equatorial GoTo mounts can track the night sky by driving the right ascension axis. Since both axes are computer controlled, GoTo technology also allows telescope manufacturers t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
