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Celestron
Celestron, LLC is a company 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 (astronomer), 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 models made significant inr ... [...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 child-friendly models on the marke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasco (company)
Tasco (also known as Tasco Worldwide) is a company which sells consumer telescopes. Tasco mainly imports telescopes for amateur astronomers but has expanded into other Optics, optical products, such as spotting scopes, microscopes, binoculars, telescopic sights, and other rifle accessories. Tasco sells via retail stores, Mail order, 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 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 atta ... [...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, similar 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 scratch e ... [...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 Estonian-German 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
Meade Instruments Corporation (also shortened to Meade) was an American multinational corporation, multinational company (law), company headquartered in Watsonville, California, that manufactured, imported and distributed telescopes, binoculars, spotting scopes, microscopes, charge-coupled device, CCD cameras, and telescope accessories for the consumer market. It was, at one point, the world's largest manufacturer of telescopes. Besides selling under its "Meade" brand name, the company sells solar telescopes under the brand "Coronado". In July 2024, Sky and Telescope magazine reported that Optronic Technologies, the owner of Meade Instruments and Orion Telescopes, had closed their facilities in California and had laid off all of their employees. As of July 15, there had been no official announcement from the company, and S&T said they were trying to get more information from their sources. As of December, 2024, the Sky&Telescope website announced that the assets of Meade, Corona ... [...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 S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dobsonian
A Dobsonian telescope is an altazimuth-mounted Newtonian telescope design popularized by John Dobson in 1965 and credited with vastly increasing the size of telescopes available to amateur astronomers. Dobson's telescopes featured a simplified mechanical design that was easy to manufacture from readily available components to create a large, portable, low-cost telescope. The design is optimized for observing faint deep-sky objects such as nebulae and galaxies. This type of observation requires a large objective diameter (i.e. light-gathering power) of relatively short focal length and portability for travel to less light-polluted locations. Dobsonians are intended to be what is commonly called a "light bucket". Operating at low magnification, the design therefore omits features found in other amateur telescopes such as equatorial tracking. Dobsonians are popular in the amateur telescope making community, where the design was pioneered and continues to evolve. A number of comme ... [...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 design evolution 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 eyepi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telescope
A telescope is a device used to observe distant objects by their emission, Absorption (electromagnetic radiation), absorption, or Reflection (physics), reflection of electromagnetic radiation. Originally, it was an optical instrument using lenses, curved mirrors, or a combination of both to observe distant objects – an optical telescope. Nowadays, the word "telescope" is defined as 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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microscope
A microscope () is a laboratory equipment, laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope. There are many types of microscopes, and they may be grouped in different ways. One way is to describe the method an instrument uses to interact with a sample and produce images, either by sending a beam of light or electrons through a sample in its optical path, by detecting fluorescence, photon emissions from a sample, or by scanning across and a short distance from the surface of a sample using a probe. The most common microscope (and the first to be invented) is the optical microscope, which uses lenses to refract visible light that passed through a microtome, thinly sectioned sample to produce an observable image. Other major types of microscopes are the fluorescence micro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torrance, California
Torrance is a coastal city in the Los Angeles metropolitan area located in southwestern Los Angeles County, California, United States. The city is part of what is known as the South Bay (Los Angeles County), South Bay region of the metropolitan area. A small section of the city, , abuts the Pacific Ocean. Torrance has a moderate year-round climate with average rainfall of per year.City of Torrance Website: About Torrance () Retrieved April 7, 2009 Torrance was incorporated in 1921, and at the 2020 United States census, 2020 census had a population of 147,067 residents. Torrance has a beachfront and 30 parks located around the city. It is also the birthplace of the American Youth Soccer Organization (AYSO). History Pre-colonial era For tho ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
