mm cameras. File Apochromat.svg alt Apochromat lens.svg thumb right The Apochromatic lens is usually ... of refraction and dispersion must be accounted for during apochromat design to assure good optical ... Category Lenses de Apochromat fr Lentille apochromatique id Lensa apokromatik it Apocromatico he nl Apochromaat pl Apochromat ru sv Apokromatisk zh ... more details
Orphan date February 2009 Note This article is about the telescope maker. For the scientific discipline, see astrophysics . Astro Physics, Inc. , a manufacturer of amateur optical telescope telescopes , telescope mount mounts , and accessories, was founded by Roland Christen in 1975, and is noted for their line of apochromat ic refracting telescope refractors . External links http www.astro physics.com Company website Category Telescope manufacturers tech company stub astronomy stub pl Astro Physics ... more details
TMB Optical of Cleveland, OH is a manufacturer of amateur optical telescope telescopes and accessories, specializing in apochromat ic refracting telescope refractors and astronomical eyepiece s. TMB was named after its founder, optics designer Thomas M. Back . Besides producing optical equipment, TMB has licensed optics designs to other manufacturers, such as Astronomics and Burgess Optical. Thomas M. Back died in September, 2007, but the company continues in operation. External links http www.tmboptical.com Company website http www.cloudynights.com item.php?item id 1549 An interview with Thomas Back Category Telescope manufacturers Category Companies based in Cleveland, Ohio US manufacturing company stub ... more details
wiktionarypar apo apo Apo or APO may refer to African Press Organization Acting Pilot Officer , the lowest commissioned grade in the Royal Air Force Pulmonary edema Acute Pulmomary Oedema , fluid accumulation on the lungs African Political Organization , a Coloured political organization in early twentieth century South Africa Alpha Phi Omega , a U.S. service fraternity Apo, a god of mountains in Inca mythology Serok Apo or Abdullah calan, Kurdistan Workers Party leader Apochromat , a type of photographic or other lens Apolipoprotein Apoprotein , a protein without its bound cofactor Apotex , Canadian pharmaceutical company, producer of generic drugs Application Performance Optimization Army Post Office , the United States armed forces postal service See military mail Association for Professional Observers , an association of fisheries observers lang de Au erparlamentarische Opposition , a political protest movement in West Germany during the 1960s and 1970s Authorized Personnel Only , a fictional black ops unit on Alias After Peak oil Peak Oil , an epoch used in dating years following the estimated Peak of Global Oil Production Places Apo Island , a volcanic island in the Philippines Mount Apo , a stratovolcano on the island of Mindanao in the Philippines Kara River or Apo, a tributary of the Danube in the Banat region of Serbia and Romania Apo eup , an Eup administrative division eup in Gimcheon, Gyeongsangbuk do, central South Korea Apache Point Observatory , an observatory in the Sacramento Mountains in Sunspot, New Mexico, U.S. Music Auckland Philharmonia Orchestra Armenian Philharmonic Orchestra APO Hiking Society , a Filipino singing group Aldworth Philharmonic Orchestra , the orchestra of Reading Blue Coat School Trivia Reading Blue Coat School See also Apolipoprotein , lipid binding protein APU disambiguation disambig cs APO de APO Begriffskl rung es APO eo APO fr APO it APO nl Apo ja APO pl APO pt Apo ro APO sv APO tl Apo ... more details
Image Superachromatic focus shift small.jpg thumb 300px right Superachromatic lens brings 4 wavelengths to a common focal plane, and has near zero residual chromatic aberration. Image Carl Zeiss Tele Superachromat.jpg thumb 300px right Carl Zeiss Tele Superachromat, 5,6 350 T lens. The superachromat or superachromatic lens was first conceived and developed by Max Herzberger as the ultimately well corrected lens optics lens . The color shift curve of a superachromat is a quartic function quartic , meaning that in theory four separate colors can be brought to focus optics focus in the same plane, while simultaneously correcting spherical aberration and field aberrations. This near perfect correction of chromatic aberration is highly beneficial in film and digital Multi spectral image multi spectral photography , as a superachromat can focus near infrared energy in the 0.7 to 1.0 micrometer wavelength band in the same focal plane as visible light, eliminating the need for refocusing. Unfortunately, due to the limited selection of optical glasses and Dispersion optics partial dispersion properties, superachromats must be manufactured with costly Fluoride glass fluorite glass es and to very tight tolerances. See also Photographic lens Achromat Apochromat References Herzberger, M., and N. McClure, http www.opticsinfobase.org.ezproxy.rice.edu abstract.cfm?uri ao 2 6 553 The design of superachromatic lenses , Appl. Opt. 2 , pp. 553 560 June 1963 . N. v. d. W. Lessing, http www.opticsinfobase.org.ezproxy.rice.edu ao abstract.cfm?URI ao 9 7 1665 Selection of optical glasses in superachromats , Appl. Opt. 9 , 1665 1669 1970 . External links http www.zeiss.de c12567a8003b58b9 Contents Frame ff8a7b7a369c1549c12570fb0048e952 Carl Zeiss Sonnar Superachromats Category Photographic lenses ru zh ... more details
Other uses Doublet disambiguation Refimprove date December 2009 File Achromat doublet en.svg right thumb An achromatic doublet . In optics , a doublet is a type of lens optics lens made up of two simple lens es paired together. Such an arrangement allows more optical surfaces, thicknesses, and formulations, especially as the space between lenses may be considered an element. With additional degrees of freedom , optical designers have more latitude to correct more Aberration in optical systems optical aberrations , more thoroughly. Types Doublets can come in many forms, though most commercial doublets are achromat s, which are optimized to reduce chromatic aberration while also reducing spherical aberration and other Aberration in optical systems optical aberrations . The lenses are made from glasses with different refractive index refractive indices and different amounts of Dispersion optics dispersion . Often one element is made from Crown glass optics crown glass and the other from flint glass . This combination produces a better image than a simple lens. Trilobite s, which are now extinct, had natural doublet lenses. Apochromat s can also be made as doublets. Doublets can be air spaced, cemented, or oiled. Oiled doublets hold the optical fluid in place with surface tension alone. In a cemented doublet, the lenses are held together by an adhesive with mechanical strength, such as optically transparent epoxy . Canada balsam was traditionally used for this purpose. Some doublets use no adhesive between the lenses, relying on external fixturing to hold them together, either because the optical design requires a gap or because thermal expansion differences between the two lenses won t allow cementing. ref http books.google.com books?id KdYclkhSfTAC&pg SA4 PA32&dq dialyte spaced doublet&hl en&ei JZEHTe7UF4P98AaTqODnAg&sa X&oi book result&ct result&resnum 5&ved 0CDYQ6AEwBA v onepage&q dialyte 20spaced 20doublet&f false Fred A. Carson, Basic optics and optical instrument ... more details
Zenitar lang ru is a series of Soviet Union Soviet Russia n prime lens es. They were developed and are currently produced by Joint Stock Company JSC S. A. Zverev Krasnogorskiy Zavod Krasnogorskiy Mekhanicheskiy Zavod KMZ . The series is most commonly known for the 1 2.8 16 mm fisheye lens . Image Alpine A110 fisheye.JPG thumb right Example photo made using MC Zenitar 16mm f 2.8 fisheye lens Image MC Zenitar M.jpg thumb right MC Zenitar M2,8 16 The lenses can be used with cameras using the M42 lens mount as well as with other mount systems using an adaptor ring. They can also be equipped with a Pentax K mount since the flange film distance is identical. MC Zenitar K M N 1 2.8 16 mm full frame fisheye MC Zenitar K M 1 2.8 20 mm MC Zenitar K 1 2.8 28 mm MC Zenitar 1 1.4 50 mm MC Zenitar ME1 1 1.7 50 mm MC Zenitar K M 1 1.9 50 mm MC Zenitar M 1 2.0 50 mm MC Zenitar 1K 1 1.4 85 mm MC Apochromat APO Telezenitar M K 1 2.8 135 mm telephoto lens telephoto MC APO Telezenitar K M 1 4.5 300 mm telephoto MC Variozenitar K M 1 2 8 3.5 25 45 mm zoom lens zoom MC Variozenitar 1 3.2 4.5 35 70 mm zoom MC Variozenitar K 1 3.5 4.5 35 105 mm zoom MC Variozenitar K 1 4.0 70 210 mm zoom External links http photonotes.org reviews zenitar fisheye Notes on the MC Zenitar 16mm 2.8 fisheye lens for Canon EOS http www.zenit foto.ru index.php?show main&cat main&id 1 Krasnogorsky Zavod official site ru icon http www.zenit foto.ru production lenses mc zenitar m.shtml MC Zenitar M 1 2.8 16 mm fisheye on Krasnogorsky Zavod official site ru icon http www.zenitcamera.com catalog catalog lenses 90.html Zenitar Lenses on Krasnogorsky Zavod R&D Center site ru icon http www.zenitcamera.com archive lenses zenitar me1 1 7 50.html MC Zenitar ME1 1,7 50 on Krasnogorsky Zavod R&D Center site ru icon http www.zenitcamera.com archive lenses zenitar 1 9 50.html MC Zenitar 1 1 9 50 mm on Krasnogorsky Zavod R&D Center site ru ico ... more details
third party date February 2012 Infobox Company company name Officina Stellare S.r.l. company logo Image Logo OS B.png 300px Officina Stellare logo company type S.r.l Societ a responsabilit limitata Ltd. UK , Limited liability company LLC US company slogan foundation 2009 location Thiene , Italy key people industry Optical instrument s products Telescope s revenue net income homepage http www.officinastellare.com Officina Stellare website Officina Stellare is an Italian manufacturer specialized in professional Telescope telescopes for Aerospace aerospace , Astronomy research and Astrophotography astroimaging . br br Company The headquarters of the company are in Thiene where R&D, engineering, manufacturing and quality control takes place. br The logo of OFFICINA STELLARE has its roots in the origin of observational astronomy. The star is a graphic evolution of the original star in the Pleiades originally drawn by Galileo Galilei Galileo in the Sidereus Nuncius 1610 . Those drawings were a revolution in the history of science and astronomy. ref cite web url http www.officinastellare.com company.php title Company Profile accessdate 2012 02 17 ref The red color of the logo is the H alpha Hydrogen Alpha line color. br br Products The range of optical systems includes Ritchey Chr tien telescope Ritchey Chr tien , Spherical aberration Aplanatic Ritchey Chr tien, Ultra Corrected Ritchey Chr tien, Riccardi Honders, Maksutov telescope Maksutov Cassegrain reflector Cassegrain , Apochromat ic Refracting telescope Refractors , custom design optics. br br Observatories, Scientifical and Educational Institutes with Officina Stellare telescopes Cerro Tololo Inter American Observatory Coquimbo Region , Chile ref cite web url http arae.iaa.es malaga 2011 talks 1 2 2 Ramos 20CHASE 500.pdf title CHASE Project CHilean Automatic Supernova sEarch accessdate 2012 03 08 ref MIT Massachusetts Institute of Technology Massachusetts , United States USA Caltech California Institute of Technolo ... more details
no footnotes date September 2011 Infobox Company company type Corporation foundation 1988 location city Richmond, British Columbia location country Canada industry Technology company slogan For people curious enough to look up and wonder. homepage http www.sky watcher.net Image Tasco SkyWatcher Telescopes.jpg thumb 250px Sky Watcher 114 mm EQ1 reflector upper right with Tasco refractor. Sky Watcher is one of the biggest worldwide producers of amateur telescopes and astronomical equipment like eyepiece s and telescope mount mounts . Company history The company was founded in 1988 as Synta Optics, at first producing only eyepieces. In 1992, the head office changed position to Suzhou Suzhou Jiangsu in China. Their first telescopes 4.5 114 mm Newtonian telescope Newtonians were distributed by Celestron and Tasco . In 1993, the first refracting telescope s were produced. In 1999, the brand Sky Watcher was established to sell Synta optics from then on under an own label. The head office was in Richmond, British Columbia , Canada. From 2000 the first dobsonian telescope dobsonians were produced, then in 2001 the first Maksutov telescope Maksutov Cassegrain , and in 2004 the first Apochromat ED APO . In 2005, an American affiliated company of Synta bought the company Celestron . Since 2008 there has been cooperation with Schott AG , a German manufacturer of high quality industrial glass. Sky Watcher s product line up contains telescopes from 2.4 60 mm up to 14 355 mm aperture with manual, motor driven or GoTo telescopes GoTo mounts. Since 2008, Sky Watcher has been the only worldwide manufacturer of FlexTube dobsonians with collapsible tubes, a patent registered design. Products Products include telescopes, spotting scopes, mounts, and many accessories. Telescopes Sky Watcher has eleven model series of telescopes. These are listed below. Equinox The Equinox series are relatively affordable Extra low dispersion ED apochromat ic refractors in Optical Tube Assem ... more details
Orphan date January 2010 Cleanup date October 2009 Infobox Observatory name LightBuckets location France , South Alpen code H11 ref name mpc obs list http www.minorplanetcenter.net iau lists ObsCodesF.html List Of Observatory Codes , Minor Planet Center website. Accessed 2011 03 28. ref until mid 2011 br http www.lightbuckets.com forums showthread.php?t 1222&page 2 B10 since November 2011 coords altitude 814.6 m weather established closed website http www.lightbuckets.com The LightBuckets Telescope Network telescope1 name LB 0002 telescope1 type 17 Dall Kirkham telescope Dall Kirkham f4.56 telescope2 name LB 0003 telescope2 type 110 mm Apochromat APO 4.3 ED doublet f5.95 telescope3 name LB 0004 telescope3 type 175 mm Apochromat APO 7 TMB triplet f8 File Eris2009 Nov09 06UT.jpg thumb right 200px The dwarf planet Eris planet Eris on a 24 inch 61 cm aperture LightBuckets telescope LightBuckets is a Commerce commercial Observatory Astronomical observatories astronomical observatory located in Rodeo, New Mexico that rents time on its telescopes to customers around the world via a website on the Internet , including amateur astronomy amateur and Astronomer professional astronomers . It is an online astronomy platform with live views, ref name rodenberg and hosts an image gallery of astronomy images. ref name rodenberg Recognized scientific uses include the confirmation of supernova and discovery of asteroids. ref name green ref name MPC68175 Description LightBuckets was founded in 2007 by Steve Cullen, a former software executive, and the observatories became active on June 12, 2008. ref http www.chesmontastro.org ?q node 3602 Home Chesmont Astronomical Society ref In 2011, he returned to the software business, and LightBuckets went through a period of change. ref name closing Time on the telescopes is sold either by a subscription or pay as you go. ref name rodenberg http www.popularmechanics.com science space telescopes 4349969 Cassie Rodenberg, The Best in Armchair Ast ... more details
Infobox scientist name Peter Dollond image John Hoppner 001.jpg image size 200px caption birth date 24 February 1731 birth place Kensington , England death date 2 July 1821 death place residence citizenship nationality ethnicity field Optics work institutions alma mater doctoral advisor doctoral students known for Achromatic lens author abbrev bot author abbrev zoo influences influenced prizes footnotes signature Peter Dollond 24 February 1731 2 July 1821 born Kensington , England was an English maker of optical instruments , the son of John Dollond . He is known for his successful optics business, and for the invention of the apochromat . Biography Working together with his father and subsequently with his younger brother and nephew George Dollond he successfully designed and manufactured a number of optical instruments. He is particularly credited with the invention of the triple achromatic lens in 1763, still in wide use today, ref Ronald Pearsall, Collecting and Restoring Scientific Instruments , David and Charles, London 1974, ISBN 0 7153 6354 9 ref ref name Stargazer cite book url http books.google.com books?id 2LZZginzib4C&pg PA140 title Stargazer the life and times of the telescope first Fred last Watson publisher Allen & Unwin year 2007 pages 140 55 isbn 9781741753837 ref though known as the Cooke triplet after a much later 1893 patent. Peter Dollond worked at first silk weaving with his father, but his father s passion for optics inspired him so much that in 1750 Peter quit the silk business and opened an optical instruments shop in Kennington , London . After two years, his father gave up silk, too, and joined him. Dollond telescopes, for sidereal or terrestrial use, were amongst the most popular in both Great Britain and abroad for a period of over one and half centuries. Admiral Lord Nelson himself owned one. Another had sailed with James Cook Captain Cook in 1769 to observe the Transit of Venus . The Peter Dollond compound chest microscope is based on ... more details
There are many ways of categorizing telescopes, and within major classifications, there are usually many variations due to professional, amateur, and commercial sub types. Telescopes can be classified by optical design, such as refracting telescope s. Telescopes can also be classified by where they are placed, such as space telescope s. One major determining factor is type of light, or particle being observed including devices referred to as telescopes that do not form an image or use optics. Some telescopes are classified by the task they perform for example Solar telescope s are all designs that look at the Sun , Dobsonian telescope s are designed to be low cost and portable, Aerial telescope s overcame the optical shortcomings of 17th century objective lenses, etc. List of optical telescope types Optical telescope s can be classified by three primary optical designs refractor, reflector, or catadioptric , by sub designs of these types, or by the task they perform. They all have their different advantages and disadvantages and they are used in different areas of Astronomer professional and amateur astronomy . Refracting telescope s Dioptrics Achromatic telescope Dialyte lens Dialyte telescopes dialytic refractor Apochromat ic Binoculars Opera glasses Monocular Non achromatic objective Non achromatic Galilean telescope Keplerian Telescope Aerial telescope Superachromat Varifocal gas lens telescope Reflecting telescope s Catoptrics Cassegrain telescope Dall Kirkham telescope Nasmyth telescope Ritchey Chr tien telescope Gregorian telescope Herrig telescope Reflecting telescope Herschelian telescope Herschelian telescope Large liquid mirror telescope Newtonian telescope Dobsonian telescope Pfund telescope Schiefspiegler telescope Stevick Paul telescope Toroidal reflector Toroidal reflector Yolo telescope Catadioptric system Catadioptric telescopes Catadioptric telescopes Catadioptrics Argunov Cassegrain telescope Catadioptric system Catadioptric telescopes Catadioptri ... more details
, the degree of correction can be further increased, as seen in an apochromatic lens or apochromat . Note that achromat and apochromat refer to the type of correction 2 or 3 wavelengths correctly focused ... more details
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