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Type of photographic or other lens
An apochromat, or apochromatic lens (apo), is a photographic or other lens that has better correction of chromatic and spherical aberration than the much
Apochromat
Failure of a lens to focus all colors on the same point
correction can be further increased, as seen in an apochromatic lens or apochromat, which provides perfect correction at three wavelengths. In general, correcting
Chromatic_aberration
Optical device used with a camera to create images
lenses may also have the focus, iris, and other functions motorized. Apochromat (apo) lenses have added correction for chromatic aberration. Process lenses
Camera_lens
Photographic lens
fluorite glass and to very tight tolerances. Photographic lens Achromat Apochromat Herzberger, M., and N. McClure, The design of superachromatic lenses,
Superachromat
Lens or mirror in optical instruments
semi-apochromat objectives deal with color better than achromatic objectives. To reduce aberration even further, more complex designs such as apochromat and
Objective_(optics)
Brand of optical lenses
(Compact Wide) angle of view 70–80°, maximum aperture generally f/5.6 A (Apochromat) normal lenses with an angle of view 50–70° and a maximum aperture of
Fujinon
Optical device which transmits and refracts light
was an important step in the development of the optical microscope. An apochromat is a lens or lens system with even better chromatic aberration correction
Lens
Lens that is designed to limit the effects of chromatic and spherical aberration
to make and sell achromatic doublets. Dollond's son Peter invented the apochromat, an improvement on the achromat, in 1763. Several different types of achromat
Achromatic_lens
Astronomical company
Dobsonian telescopes in 2000, followed by Maksutov–Cassegrains in 2001, and Apochromat ED-APO refracting telescopes in 2004. Sky-Watcher sells telescopes from
Sky-Watcher
American optical designer and amateur astronomer (1935–2025)
Inc. Blog". televue.com. Retrieved May 17, 2024. "TeleVue 76 SD Doublet Apochromat Refractor (3.0" aperture)". www.company7.com. Retrieved October 31, 2025
Al_Nagler
known for his successful optics business, and for the invention of the apochromat. Dollond was born in Kensington. Working together with his father and
Peter_Dollond
Topics referred to by the same term
accumulation on the lungs Apo (drink), an alcoholic beverage of Northeast India Apochromat, a type of photographic or other lens Apoprotein (disambiguation), a protein
Apo
Telescopes which utilize curved mirrors to form an image
a combination of two or three aperture sized lenses (see achromat and apochromat for more details). The cost of such systems therefore scales significantly
Reflecting_telescope
All Latin and Greek roots beginning with G
achromatic, achromatism, achromatopsia, achromatopsic, amphichroic, apochromat, auxochrome, chroma, chromatic, chromatid, chromatophore, chrome, chromium
List of Greek and Latin roots in English/A–G
List_of_Greek_and_Latin_roots_in_English/A–G
Material dispersion property
in characterizing a system's chromaticity (such as in the design of apochromats), the full dispersion relation is used (i.e., refractive index as a function
Abbe_number
Brand of lenses produced by Nikon
"Kasyapa" 50mmF3.5 (origin of this lens uncertain) Nikkor 50mmF3.5 true Apochromat series, designed for the printing industry, optimized for 1:1 reproduction
Nikkor
Warwickshire, England 1791–1923 Dollond Apochromatic Triplet 9.53 cm (3.75") apochromat First apochromatic triplet England 1763 Dollond Triplet for Wollaston
List of largest optical telescopes in the 18th century
List_of_largest_optical_telescopes_in_the_18th_century
Refracting telescope design that reduces chromatic aberration
doublet in need of stronger curvature than, e.g., a Fraunhofer doublet. Apochromat History of telescopes List of telescope types Kidger, M.J. (2002) Fundamental
Achromatic_telescope
All Latin and Greek roots beginning with C
achromatic, achromatism, achromatopsia, achromatopsic, amphichroic, apochromat, auxochrome, chroma, chromatic, chromatid, chromatophore, chrome, chromium
List of Greek and Latin roots in English/C
List_of_Greek_and_Latin_roots_in_English/C
Public observatory in Berlin
stands in the eleven-meter dome, the 6-inch double refractor (Zeiss-B Apochromat + Busch) in the five-meter dome, and a 7-inch telescope on the platform
Wilhelm_Foerster_Observatory
Observatory in Regensburg, Germany
permanently damaged and replaced by an apochromat build by Lichtenknecker. Today, the dome houses a 6" apochromat and a 12.5" Cassegrain telescope. Other
Public_Observatory_Regensburg
8 or F1.9. It was an apochromat, and is still highly regarded as possibly the best standard lens ever offered. Other apochromats offered by Alpa included
Alpa
telephoto lenses since the early 1980s are apochromatic. Note, better-than-apochromat lenses are available for scientific/military/industrial work. The quintessential
History of photographic lens design
History_of_photographic_lens_design
World's largest telescopes
Britain 1780–1789 Dollond Apochromatic Triplet 9.53 cm 3.75" Refractor – apochromat First apochromatic triplet England 1763 Father Noel's Gregorian reflector
List of largest optical telescopes historically
List_of_largest_optical_telescopes_historically
Observatory
1-meter f/8 Ritchey–Chrétien reflector from DFM Engineering APM 203mm f/9 apochromat refractor from APM TOA-130 130mm refractor from Takahashi FSQ 106 106mm
Embry-Riddle_Observatory
Type of optical lens
Trilobites, which are now extinct, had natural doublet lenses in their eyes. Apochromats can also be made as doublets. Doublets can be air-spaced, cemented, or
Doublet_(lens)
teacher in the 1970s, he developed the "HAB", an oil-spaced triplet-lens apochromat DIY-kit for amateur astronomers (Src). The asteroid's name was proposed
List of minor planets: 576001–577000
List_of_minor_planets:_576001–577000
Large telescope with a lens
"Smith's Illustrated Astronomy" 1848). Achromatic lens Aerial telescope Apochromat Extremely large telescope List of largest optical refracting telescopes
Great_refractor
apochromatic refracting telescopes on plain glasses 125 and 150 mm, classical apochromats — refractors 200 mm; Reflectors with aperture 65 («Alcor»), 110 («Mizar»)
Novosibirsk Instrument-Building Plant
Novosibirsk_Instrument-Building_Plant
Series of anamorphic lenses for filmmakers
although it is not certain whether or not the lenses are true achromats or apochromats. The only weakness in the Iscorama optical design appears to be the relatively
Iscorama
Lens glass material with reduced refractive index shift with wavelength
to the achromatic doublets, which converge blue and red wavelengths, apochromats converge focus of three or more wavelengths. Thoriated glass is doped
Low-dispersion_glass
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Boy/Male
Australian, Hindu, Indian
The Mening of Love
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Italian American
Industrious.
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Indian
Mother, Worthy woman
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Indian
Black.
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Egyptian
Mythical cobra goddess.
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Arabic, Islamic, Muslim, Pakistani, Urdu
Produce Good Thing
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English Latin American
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Tamil
Cheerful, Light-hearted
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Muslim
Vision, Sight, The faculty of seeing, Clever, Intelligent
Girl/Female
Muslim
Intelligence
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