Faster access than browser!
58 relations: Antenna (radio), Anton Kutter, Astronomer, Bonaventura Cavalieri, Camera, Catadioptric system, Celestron, Coma (optics), Conic constant, Curved mirror, Dmitry Dmitrievich Maksutov, Ellipse, Eyepiece, F-number, Figuring, Focal length, Focus (optics), George Willis Ritchey, Goldstone Deep Space Communications Complex, Ground station, Henri Chrétien, Hubble Space Telescope, Hyperboloid, Image sensor, James Gregory (mathematician), Jet Propulsion Laboratory, Journal des sçavans, Klevtsov–Cassegrain telescope, Laurent Cassegrain, List of telescope types, Maksutov telescope, Mangin mirror, Marin Mersenne, Meade Instruments, Optical axis, Optical telescope, Optical transfer function, Parabolic reflector, Primary mirror, Questar Corporation, Radio telescope, Radius of curvature (optics), Reflecting telescope, Refracting telescope, Ritchey–Chrétien telescope, Roger Hayward, Russia, Schmidt camera, Schmidt corrector plate, Schmidt–Cassegrain telescope, ..., Scientific American, Scientific equipment optician, Soviet Union, Sphere, Spherical aberration, Telephoto lens, Vixen (telescopes), W. M. Keck Observatory. Expand index (8 more) »
Antenna (radio)
In radio, an antenna is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver.
New!!: Cassegrain reflector and Antenna (radio) · See more »
Anton Kutter
Anton Kutter (born 13 June 1903 in Biberach an der Riß, died 1 February 1985 in Biberach) was a German film director and screenwriter.
New!!: Cassegrain reflector and Anton Kutter · See more »
Astronomer
An astronomer is a scientist in the field of astronomy who concentrates their studies on a specific question or field outside the scope of Earth.
New!!: Cassegrain reflector and Astronomer · See more »
Bonaventura Cavalieri
Bonaventura Francesco Cavalieri (Cavalerius; 1598 – 30 November 1647) was an Italian mathematician and a Jesuate.
New!!: Cassegrain reflector and Bonaventura Cavalieri · See more »
Camera
A camera is an optical instrument for recording or capturing images, which may be stored locally, transmitted to another location, or both.
New!!: Cassegrain reflector and Camera · See more »
Catadioptric system
A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics).
New!!: Cassegrain reflector and Catadioptric system · See more »
Celestron
Celestron is a company based in Torrance, California, USA that manufactures telescopes and distributes telescopes, binoculars, spotting scopes, microscopes, and accessories manufactured by its parent company, the Synta Technology Corporation of Taiwan.
New!!: Cassegrain reflector and Celestron · See more »
Coma (optics)
In optics (especially telescopes), the coma, or comatic aberration, in an optical system refers to aberration inherent to certain optical designs or due to imperfection in the lens or other components that results in off-axis point sources such as stars appearing distorted, appearing to have a tail (coma) like a comet.
New!!: Cassegrain reflector and Coma (optics) · See more »
Conic constant
In geometry, the conic constant (or Schwarzschild constant, after Karl Schwarzschild) is a quantity describing conic sections, and is represented by the letter K.
New!!: Cassegrain reflector and Conic constant · See more »
Curved mirror
A curved mirror is a mirror with a curved reflecting surface.
New!!: Cassegrain reflector and Curved mirror · See more »
Dmitry Dmitrievich Maksutov
Dmitry Dmitrievich Maksutov (Дми́трий Дми́триевич Максу́тов) (– 12 August 1964) was a Russian / Soviet optical engineer and amateur astronomer.
New!!: Cassegrain reflector and Dmitry Dmitrievich Maksutov · See more »
Ellipse
In mathematics, an ellipse is a curve in a plane surrounding two focal points such that the sum of the distances to the two focal points is constant for every point on the curve.
New!!: Cassegrain reflector and Ellipse · See more »
Eyepiece
An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes.
New!!: Cassegrain reflector and Eyepiece · See more »
F-number
The f-number of an optical system (such as a camera lens) is the ratio of the system's focal length to the diameter of the entrance pupil.
New!!: Cassegrain reflector and F-number · See more »
Figuring
Figuring is the process of final polishing of an optical surface to remove imperfections or modify the surface curvature to achieve the shape required for a given application.
New!!: Cassegrain reflector and Figuring · See more »
Focal length
The focal length of an optical system is a measure of how strongly the system converges or diverges light.
New!!: Cassegrain reflector and Focal length · See more »
Focus (optics)
In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge.
New!!: Cassegrain reflector and Focus (optics) · See more »
George Willis Ritchey
George Willis Ritchey (December 31, 1864 – November 4, 1945) was an American optician and telescope maker and astronomer born at Tuppers Plains, Ohio.
New!!: Cassegrain reflector and George Willis Ritchey · See more »
Goldstone Deep Space Communications Complex
The Goldstone Deep Space Communications Complex (GDSCC), commonly called the Goldstone Observatory, is located in the Mojave Desert near Barstow in the U.S. state of California.
New!!: Cassegrain reflector and Goldstone Deep Space Communications Complex · See more »
Ground station
A ground station, earth station, or earth terminal is a terrestrial radio station designed for extraplanetary telecommunication with spacecraft (constituting part of the ground segment of the spacecraft system), or reception of radio waves from astronomical radio sources.
New!!: Cassegrain reflector and Ground station · See more »
Henri Chrétien
Henri Jacques Chrétien (1 February 1879, Paris – 6 February 1956, Washington, D.C.) was a French astronomer and an inventor.
New!!: Cassegrain reflector and Henri Chrétien · See more »
Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
New!!: Cassegrain reflector and Hubble Space Telescope · See more »
Hyperboloid
In geometry, a hyperboloid of revolution, sometimes called circular hyperboloid, is a surface that may be generated by rotating a hyperbola around one of its principal axes.
New!!: Cassegrain reflector and Hyperboloid · See more »
Image sensor
An image sensor or imaging sensor is a sensor that detects and conveys the information that constitutes an image.
New!!: Cassegrain reflector and Image sensor · See more »
James Gregory (mathematician)
James Gregory FRS (November 1638 – October 1675) was a Scottish mathematician and astronomer.
New!!: Cassegrain reflector and James Gregory (mathematician) · See more »
Jet Propulsion Laboratory
The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in Pasadena, California, United States, with large portions of the campus in La Cañada Flintridge, California.
New!!: Cassegrain reflector and Jet Propulsion Laboratory · See more »
Journal des sçavans
The Journal des sçavans (later renamed Journal des savants), established by Denis de Sallo, was the earliest academic journal published in Europe.
New!!: Cassegrain reflector and Journal des sçavans · See more »
Klevtsov–Cassegrain telescope
The Klevtsov–Cassegrain telescope is a type of catadioptric Cassegrain telescope that uses a spherical primary mirror and a sub-aperture secondary corrector group composed of a small lens and a Mangin mirror.
New!!: Cassegrain reflector and Klevtsov–Cassegrain telescope · See more »
Laurent Cassegrain
Laurent Cassegrain (ca. 1629 – September 1, 1693) was a Catholic priest who is notable as the probable inventor of the Cassegrain reflector, a folded two-mirror reflecting telescope design.
New!!: Cassegrain reflector and Laurent Cassegrain · See more »
List of telescope types
The following are lists of devices categorized as types of telescopes or devices associated with telescopes.
New!!: Cassegrain reflector and List of telescope types · See more »
Maksutov telescope
The Maksutov (also called a "Mak") is a catadioptric telescope design that combines a spherical mirror with a weakly negative meniscus lens in a design that takes advantage of all the surfaces being nearly "spherically symmetrical".
New!!: Cassegrain reflector and Maksutov telescope · See more »
Mangin mirror
In optics, a Mangin mirror is a negative meniscus lens with the reflective surface on the rear side of the glass forming a curved mirror that reflects light without spherical aberration.
New!!: Cassegrain reflector and Mangin mirror · See more »
Marin Mersenne
Marin Mersenne, Marin Mersennus or le Père Mersenne (8 September 1588 – 1 September 1648) was a French polymath, whose works touched a wide variety of fields.
New!!: Cassegrain reflector and Marin Mersenne · See more »
Meade Instruments
The Meade Instruments Corporation (also shortened to Meade) is an American multinational company headquartered in Irvine, California, that manufactures, imports, and distributes telescopes, binoculars, spotting scopes, microscopes, CCD cameras and telescope accessories for the consumer market.
New!!: Cassegrain reflector and Meade Instruments · See more »
Optical axis
An optical axis is a line along which there is some degree of rotational symmetry in an optical system such as a camera lens or microscope.
New!!: Cassegrain reflector and Optical axis · See more »
Optical telescope
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.
New!!: Cassegrain reflector and Optical telescope · See more »
Optical transfer function
The optical transfer function (OTF) of an optical system such as a camera, microscope, human eye, or projector specifies how different spatial frequencies are handled by the system.
New!!: Cassegrain reflector and Optical transfer function · See more »
Parabolic reflector
A parabolic (or paraboloid or paraboloidal) reflector (or dish or mirror) is a reflective surface used to collect or project energy such as light, sound, or radio waves.
New!!: Cassegrain reflector and Parabolic reflector · See more »
Primary mirror
A primary mirror (or primary) is the principal light-gathering surface (the objective) of a reflecting telescope.
New!!: Cassegrain reflector and Primary mirror · See more »
Questar Corporation
Questar Corporation is a company based in New Hope, Pennsylvania.
New!!: Cassegrain reflector and Questar Corporation · See more »
Radio telescope
A radio telescope is a specialized antenna and radio receiver used to receive radio waves from astronomical radio sources in the sky in radio astronomy.
New!!: Cassegrain reflector and Radio telescope · See more »
Radius of curvature (optics)
Radius of curvature (ROC) has specific meaning and sign convention in optical design.
New!!: Cassegrain reflector and Radius of curvature (optics) · See more »
Reflecting telescope
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image.
New!!: Cassegrain reflector and Reflecting telescope · See more »
Refracting telescope
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).
New!!: Cassegrain reflector and Refracting telescope · See more »
Ritchey–Chrétien telescope
A Ritchey–Chrétien telescope (RCT or simply RC) is a specialized variant of the Cassegrain telescope that has a hyperbolic primary mirror and a hyperbolic secondary mirror designed to eliminate off-axis optical errors (coma).
New!!: Cassegrain reflector and Ritchey–Chrétien telescope · See more »
Roger Hayward
Roger Hayward (1899 - October 11, 1979) was an American artist, architect, optical designer and astronomer.
New!!: Cassegrain reflector and Roger Hayward · See more »
Russia
Russia (rɐˈsʲijə), officially the Russian Federation (p), is a country in Eurasia. At, Russia is the largest country in the world by area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 144 million people as of December 2017, excluding Crimea. About 77% of the population live in the western, European part of the country. Russia's capital Moscow is one of the largest cities in the world; other major cities include Saint Petersburg, Novosibirsk, Yekaterinburg and Nizhny Novgorod. Extending across the entirety of Northern Asia and much of Eastern Europe, Russia spans eleven time zones and incorporates a wide range of environments and landforms. From northwest to southeast, Russia shares land borders with Norway, Finland, Estonia, Latvia, Lithuania and Poland (both with Kaliningrad Oblast), Belarus, Ukraine, Georgia, Azerbaijan, Kazakhstan, China, Mongolia and North Korea. It shares maritime borders with Japan by the Sea of Okhotsk and the U.S. state of Alaska across the Bering Strait. The East Slavs emerged as a recognizable group in Europe between the 3rd and 8th centuries AD. Founded and ruled by a Varangian warrior elite and their descendants, the medieval state of Rus arose in the 9th century. In 988 it adopted Orthodox Christianity from the Byzantine Empire, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Rus' ultimately disintegrated into a number of smaller states; most of the Rus' lands were overrun by the Mongol invasion and became tributaries of the nomadic Golden Horde in the 13th century. The Grand Duchy of Moscow gradually reunified the surrounding Russian principalities, achieved independence from the Golden Horde. By the 18th century, the nation had greatly expanded through conquest, annexation, and exploration to become the Russian Empire, which was the third largest empire in history, stretching from Poland on the west to Alaska on the east. Following the Russian Revolution, the Russian Soviet Federative Socialist Republic became the largest and leading constituent of the Union of Soviet Socialist Republics, the world's first constitutionally socialist state. The Soviet Union played a decisive role in the Allied victory in World War II, and emerged as a recognized superpower and rival to the United States during the Cold War. The Soviet era saw some of the most significant technological achievements of the 20th century, including the world's first human-made satellite and the launching of the first humans in space. By the end of 1990, the Soviet Union had the world's second largest economy, largest standing military in the world and the largest stockpile of weapons of mass destruction. Following the dissolution of the Soviet Union in 1991, twelve independent republics emerged from the USSR: Russia, Ukraine, Belarus, Kazakhstan, Uzbekistan, Armenia, Azerbaijan, Georgia, Kyrgyzstan, Moldova, Tajikistan, Turkmenistan and the Baltic states regained independence: Estonia, Latvia, Lithuania; the Russian SFSR reconstituted itself as the Russian Federation and is recognized as the continuing legal personality and a successor of the Soviet Union. It is governed as a federal semi-presidential republic. The Russian economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in 2015. Russia's extensive mineral and energy resources are the largest such reserves in the world, making it one of the leading producers of oil and natural gas globally. The country is one of the five recognized nuclear weapons states and possesses the largest stockpile of weapons of mass destruction. Russia is a great power as well as a regional power and has been characterised as a potential superpower. It is a permanent member of the United Nations Security Council and an active global partner of ASEAN, as well as a member of the G20, the Shanghai Cooperation Organisation (SCO), the Council of Europe, the Asia-Pacific Economic Cooperation (APEC), the Organization for Security and Co-operation in Europe (OSCE), and the World Trade Organization (WTO), as well as being the leading member of the Commonwealth of Independent States (CIS), the Collective Security Treaty Organization (CSTO) and one of the five members of the Eurasian Economic Union (EEU), along with Armenia, Belarus, Kazakhstan and Kyrgyzstan.
New!!: Cassegrain reflector and Russia · See more »
Schmidt camera
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.
New!!: Cassegrain reflector and Schmidt camera · See more »
Schmidt corrector plate
A Schmidt corrector plate is an aspheric lens which is designed to correct the spherical aberration in the spherical primary mirror it is combined with.
New!!: Cassegrain reflector and Schmidt corrector plate · See more »
Schmidt–Cassegrain telescope
The Schmidt–Cassegrain is a catadioptric telescope that combines a Cassegrain reflector's optical path with a Schmidt corrector plate to make a compact astronomical instrument that uses simple spherical surfaces.
New!!: Cassegrain reflector and Schmidt–Cassegrain telescope · See more »
Scientific American
Scientific American (informally abbreviated SciAm) is an American popular science magazine.
New!!: Cassegrain reflector and Scientific American · See more »
Scientific equipment optician
A Scientific equipment optician is an individual who makes and adjusts other optical aids, including telescope optics and microscope lenses.
New!!: Cassegrain reflector and Scientific equipment optician · See more »
Soviet Union
The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.
New!!: Cassegrain reflector and Soviet Union · See more »
Sphere
A sphere (from Greek σφαῖρα — sphaira, "globe, ball") is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk").
New!!: Cassegrain reflector and Sphere · See more »
Spherical aberration
Spherical aberration is an optical effect observed in an optical device (lens, mirror, etc.) that occurs due to the increased refraction of light rays when they strike a lens or a reflection of light rays when they strike a mirror near its edge, in comparison with those that strike close to the centre.
New!!: Cassegrain reflector and Spherical aberration · See more »
Telephoto lens
In photography and cinematography, a telephoto lens is a specific type of a long-focus lens in which the physical length of the lens is shorter than the focal length.
New!!: Cassegrain reflector and Telephoto lens · See more »
Vixen (telescopes)
Vixen is a Japanese company that makes telescopes, binoculars, spotting scopes and accessories for their products.
New!!: Cassegrain reflector and Vixen (telescopes) · See more »
W. M. Keck Observatory
The W. M. Keck Observatory is a two-telescope astronomical observatory at an elevation of 4,145 meters (13,600 ft) near the summit of Mauna Kea in the U.S. state of Hawaii.
New!!: Cassegrain reflector and W. M. Keck Observatory · See more »
Redirects here:
Cassegrain Reflector, Cassegrain configuration, Cassegrain focus, Cassegrain reflectors, Cassegrain telescope, Cassegrainian telescope, Folded Cassegrain.
References
[1] https://en.wikipedia.org/wiki/Cassegrain_reflector
