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Binoculars

Index Binoculars

Binoculars or field glasses are two 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. [1]

149 relations: Abbe–Koenig prism, Air pollution, Albireo, Amateur astronomy, Amateur telescope making, Angle, Angular resolution, Anti-fog, Anti-reflective coating, Aperture, Apparent magnitude, Barr and Stroud, Bausch & Lomb, BelOMO, Binary star, Binocular vision, Binoviewer, Bresser, Brewster's angle, Brightness, Bushnell Corporation, Canon Inc., Carl Kellner (optician), Carl Zeiss AG, Celestron, Ceres (dwarf planet), Chemical vapor deposition, Cold War, Comet, Cygnus (constellation), Deep-sky object, Depth perception, Dielectric, Dielectric mirror, Dioptre, Distributed Bragg reflector, Docter Optics, Dwarf planet, Eccentric (mechanism), Erect image, Eris (dwarf planet), Ernst Abbe, Exit pupil, Eye relief, Eyepiece, Far-sightedness, Field of view, Focal length, Focus (optics), Foucault pendulum, ..., Fujinon, Galaxy, Galilean moons, Geometric phase, Gimmick, Globe effect, Globular cluster, Gyroscope, I.O.R., Ignazio Porro, Illuminance, Image stabilization, Infrared, Jupiter, Krasnogorsky Zavod, Leica Camera, Lens (optics), Leupold & Stevens, Light pollution, Linearity, List of telescope types, Loupe, Luminance, Luminous flux, Magnesium fluoride, Meade Instruments, Meopta, Messier 13, Messier object, Milky Way, Milliradian, Minox, Monocular, Moon, Near-sightedness, Nebula, Neptune, NGC 869, NGC 884, Nikon, North America Nebula, Objective (optics), Olympus Corporation, Omega Nebula, Open cluster, Opera glasses, Optical coating, Optical path, Optical telescope, Pentax, Periscope, Perseus, Pluto, Polarization (waves), Porro prism, Praktica, Pupillary distance, Rangefinder, Ratio, Reflectance, Reflection (physics), Refracting telescope, Refractive index, Relay lens, Reticle, Roof prism, Sagittarius (constellation), Saturn, Schmidt–Pechan prism, Set screw, Sky & Telescope, Spotting scope, Stadiametric rangefinding, Sunagor, Supernova, Swarovski Optik, Takahashi Seisakusho, Tasco, Theatre, Titan (moon), Total internal reflection, Tourist attraction, Tower viewer, Uranus, Venus, Vignetting, Vivitar, Vixen (telescopes), Vortex Optics, Wave interference, World War II, Yukon Optics, Zoom lens, 10 Hygiea, 2 Pallas, 4 Vesta, 511 Davida, 52 Europa, 704 Interamnia. Expand index (99 more) »

Abbe–Koenig prism

An Abbe–Koenig prism is a type of reflecting prism, used to invert an image (rotate it by 180°).

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Air pollution

Air pollution occurs when harmful or excessive quantities of substances including gases, particulates, and biological molecules are introduced into Earth's atmosphere.

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Albireo

Albireo is the traditional name for the double star also designated Beta Cygni (β Cygni, abbreviated Beta Cyg, β Cyg), although the International Astronomical Union now regards the name as only applying to the brightest component.

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Amateur astronomy

Amateur astronomy is a hobby whose participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes.

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Amateur telescope making

Amateur telescope making is the activity of building telescopes as a hobby, as opposed to being a paid professional.

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Angle

In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

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Angular resolution

Angular resolution or spatial resolution describes the ability of any image-forming device such as an optical or radio telescope, a microscope, a camera, or an eye, to distinguish small details of an object, thereby making it a major determinant of image resolution.

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Anti-fog

Anti-fog agents, also known as anti-fogging agents and treatments, are chemicals that prevent the condensation of water in the form of small droplets on a surface which resemble fog.

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Anti-reflective coating

An antireflective or anti-reflection (AR) coating is a type of optical coating applied to the surface of lenses and other optical elements to reduce reflection.

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Aperture

In optics, an aperture is a hole or an opening through which light travels.

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Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

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Barr and Stroud

Barr & Stroud Limited was a pioneering Glasgow optical engineering firm.

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Bausch & Lomb

Bausch + Lomb is an American eye health products company based in Bridgewater, New Jersey.

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BelOMO

BelOMO or Belorusskoe Optiko-Mechanichesckoye Obyedinenie (Беломо or Белорусское оптико-механическое объединение, Belarus Optical & Mechanical Association) was founded in Minsk in 1971 in Byelorussian SSR, Soviet Union, now Belarus.

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Binary star

A binary star is a star system consisting of two stars orbiting around their common barycenter.

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Binocular vision

In biology, binocular vision is a type of vision in which an animal having two eyes is able to perceive a single three-dimensional image of its surroundings.

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Binoviewer

A binoviewer is an optical device designed to enable binocular viewing through a single objective.

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Bresser

The Bresser Corporation is a Germany-based manufacturer of binoculars, telescopes and microscopes.

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Brewster's angle

Brewster's angle (also known as the polarization angle) is an angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface, with no reflection.

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Brightness

Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light.

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Bushnell Corporation

Bushnell Corporation is an American company specializing in sporting optics and outdoor products based in Overland Park, Kansas, and is a subsidiary of Vista Outdoor.

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Canon Inc.

is a Japanese multinational corporation specializing in the manufacture of imaging and optical products, including cameras, camcorders, photocopiers, steppers, computer printers and medical equipment. It's headquartered in Ōta, Tokyo, Japan."." Canon. Retrieved on 13 January 2009. Canon has a primary listing on the Tokyo Stock Exchange and is a constituent of the TOPIX index. It has a secondary listing on the New York Stock Exchange.

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Carl Kellner (optician)

Carl Kellner (March 26, 1826 – May 13, 1855) was a German mechanic and self-educated mathematician who founded in 1849 an "Optical Institute" that later became the Leitz company, makers of the Leica cameras.

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Carl Zeiss AG

Carl Zeiss, branded as ZEISS, is a German manufacturer of optical systems, industrial measurements and medical devices, founded in Jena, Germany in 1846 by optician Carl Zeiss.

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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.

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Ceres (dwarf planet)

Ceres (minor-planet designation: 1 Ceres) is the largest object in the asteroid belt that lies between the orbits of Mars and Jupiter, slightly closer to Mars' orbit.

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Chemical vapor deposition

Chemical vapor deposition (CVD) is deposition method used to produce high quality, high-performance, solid materials, typically under vacuum.

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Cold War

The Cold War was a state of geopolitical tension after World War II between powers in the Eastern Bloc (the Soviet Union and its satellite states) and powers in the Western Bloc (the United States, its NATO allies and others).

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Comet

A comet is an icy small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing.

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Cygnus (constellation)

Cygnus is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan.

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Deep-sky object

Deep-sky object (abbreviated as DSO) is a term designating any astronomical object that is not an individual star or Solar System object (such as Sun, Moon, planet, comet, etc.). The classification is used for the most part by amateur astronomers to denote visually observed faint naked eye and telescopic objects such as star clusters, nebulae and galaxies.

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Depth perception

Depth perception is the visual ability to perceive the world in three dimensions (3D) and the distance of an object.

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Dielectric

A dielectric (or dielectric material) is an electrical insulator that can be polarized by an applied electric field.

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Dielectric mirror

A dielectric mirror, also known as a Bragg mirror, is a type of mirror composed of multiple thin layers of dielectric material, typically deposited on a substrate of glass or some other optical material.

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Dioptre

A dioptre (British spelling) or diopter (American spelling) is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres.

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Distributed Bragg reflector

A distributed Bragg reflector (DBR) is a reflector used in waveguides, such as optical fibers.

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Docter Optics

Docter Optics is a German manufacturer of quality sports optics, including binoculars, rifle scopes, spotting scopes, red dot sights, flashlights and reading glasses.

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Dwarf planet

A dwarf planet is a planetary-mass object that is neither a planet nor a natural satellite.

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Eccentric (mechanism)

In mechanical engineering, an eccentric is a circular disk (eccentric sheave) solidly fixed to a rotating axle with its centre offset from that of the axle (hence the word "eccentric", out of the centre).

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Erect image

An erect image, in optics, is one that appears right-side up.

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Eris (dwarf planet)

Eris (minor-planet designation 136199 Eris) is the most massive and second-largest (by volume) dwarf planet in the known Solar System.

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Ernst Abbe

Ernst Karl Abbe HonFRMS (23 January 1840 – 14 January 1905) was a German physicist, optical scientist, entrepreneur, and social reformer.

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Exit pupil

In optics, the exit pupil is a virtual aperture in an optical system.

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Eye relief

The eye relief of an optical instrument (such as a telescope, a microscope, or binoculars) is the distance from the last surface of an eyepiece within which the user's eye can obtain the full viewing angle.

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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.

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Far-sightedness

Far-sightedness, also known as hyperopia, is a condition of the eye in which light is focused behind, instead of on, the retina.

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Field of view

The field of view is the extent of the observable world that is seen at any given moment.

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Focal length

The focal length of an optical system is a measure of how strongly the system converges or diverges light.

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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.

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Foucault pendulum

The Foucault pendulum or Foucault's pendulum is a simple device named after French physicist Léon Foucault and conceived as an experiment to demonstrate the Earth's rotation.

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Fujinon

Fujinon is a brand of optical lenses made by Fujifilm.

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Galaxy

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.

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Galilean moons

The Galilean moons are the four largest moons of Jupiter—Io, Europa, Ganymede, and Callisto.

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Geometric phase

In classical and quantum mechanics, the geometric phase, Pancharatnam–Berry phase (named after S. Pancharatnam and Sir Michael Berry), Pancharatnam phase or most commonly Berry phase, is a phase difference acquired over the course of a cycle, when a system is subjected to cyclic adiabatic processes, which results from the geometrical properties of the parameter space of the Hamiltonian.

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Gimmick

A gimmick is a novel device or idea designed primarily to attract attention or increase appeal, often with little intrinsic value.

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Globe effect

The globe effect, sometimes called the rolling ball effect or the spinning globe effect, is an optical phenomenon that occurs with visual optical instruments, in particular binoculars and telescopes, that are designed to be free of distortion.

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Globular cluster

A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.

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Gyroscope

A gyroscope (from Ancient Greek γῦρος gûros, "circle" and σκοπέω skopéō, "to look") is a device used for measuring or maintaining orientation and angular velocity.

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I.O.R.

Întreprinderea Optică Română ("Romanian Optical Enterprise"), often abbreviated by the acronym IOR, is a major optics company established in 1936 in Bucharest, Romania.

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Ignazio Porro

Ignazio Porro (25 November 1801 – 8 October 1875) was an Italian inventor of optical instruments.

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Illuminance

In photometry, illuminance is the total luminous flux incident on a surface, per unit area.

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Image stabilization

Image stabilization (IS) is a family of techniques that reduce blurring associated with the motion of a camera or other imaging device during exposure.

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Infrared

Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.

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Jupiter

Jupiter is the fifth planet from the Sun and the largest in the Solar System.

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Krasnogorsky Zavod

Krasnogorskiy zavod im.

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Leica Camera

Leica Camera AG is a German company that manufactures cameras, lenses, binoculars, rifle scopes and ophthalmic lenses.

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Lens (optics)

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.

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Leupold & Stevens

Leupold & Stevens, Inc. is an American manufacturer of telescopic sights, red dot sights, spotting scopes, and binoculars located in Beaverton, Oregon, United States.

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Light pollution

Light pollution, also known as photopollution, is the presence of anthropogenic light in the night environment.

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Linearity

Linearity is the property of a mathematical relationship or function which means that it can be graphically represented as a straight line.

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List of telescope types

The following are lists of devices categorized as types of telescopes or devices associated with telescopes.

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Loupe

A loupe is a simple, small magnification device used to see small details more closely.

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Luminance

Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction.

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Luminous flux

In photometry, luminous flux or luminous power is the measure of the perceived power of light.

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Magnesium fluoride

Magnesium fluoride is an inorganic compound with the formula MgF2.

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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.

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Meopta

Meopta was a Czechoslovak national holding company, producing various optical devices.

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Messier 13

Messier 13 (M13), also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of several hundred thousand stars in the constellation of Hercules.

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Messier object

The Messier objects are a set of 110 astronomical objects, of which 103 were included in lists published by French astronomer Charles Messier in 1771 and 1781.

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Milky Way

The Milky Way is the galaxy that contains our Solar System.

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Milliradian

A milliradian, often called a mil or mrad, is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian).

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Minox

| name.

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Monocular

A monocular is a modified refracting telescope used to magnify the images of distant objects by passing light through a series of lenses and usually prisms, the application of prisms resulting in a lightweight, compact telescope.

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Moon

The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.

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Near-sightedness

Near-sightedness, also known as short-sightedness and myopia, is a condition of the eye where light focuses in front of, instead of on, the retina.

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Nebula

A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.

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Neptune

Neptune is the eighth and farthest known planet from the Sun in the Solar System.

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NGC 869

NGC 869 is an open cluster located 7600 light years away in the constellation of Perseus.

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NGC 884

NGC 884 is an open cluster located 7600 light years away in the constellation of Perseus.

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Nikon

(or), also known just as Nikon, is a Japanese multinational corporation headquartered in Tokyo, Japan, specializing in optics and imaging products.

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North America Nebula

The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb (the tail of the swan and its brightest star).

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Objective (optics)

In optical engineering, the objective is the optical element that gathers light from the object being observed and focuses the light rays to produce a real image.

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Olympus Corporation

is a Japanese manufacturer of optics and reprography products.

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Omega Nebula

The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, and the Horseshoe Nebula (catalogued as Messier 17 or M17 or NGC 6618) is an H II region in the constellation Sagittarius.

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Open cluster

An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.

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Opera glasses

Opera glasses, also known as theater binoculars or Galilean binoculars, are compact, low-power optical magnification devices, usually used at performance events, whose name is derived from traditional use at opera performances.

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Optical coating

An optical coating is one or more thin layers of material deposited on an optical component such as a lens or mirror, which alters the way in which the optic reflects and transmits light.

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Optical path

The path that light takes in traversing an optical medium or system is often called the optical path.

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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.

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Pentax

is a brand name used primarily by Japanese multinational imaging and electronics company Ricoh for cameras, sport optics (including binoculars and rifle scopes), and CCTV optics.

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Periscope

A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position.

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Perseus

In Greek mythology, Perseus (Περσεύς) is the legendary founder of Mycenae and of the Perseid dynasty, who, alongside Cadmus and Bellerophon, was the greatest Greek hero and slayer of monsters before the days of Heracles.

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Pluto

Pluto (minor planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune.

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Polarization (waves)

Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations.

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Porro prism

In optics, a Porro prism, named for its inventor Ignazio Porro, is a type of reflection prism used in optical instruments to alter the orientation of an image.

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Praktica

Praktica is a brand of camera manufactured by Pentacon in Dresden in eastern Germany, formerly within the GDR prior to German reunification in 1990.

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Pupillary distance

Pupillary distance (PD) or interpupillary distance (IPD) is the distance measured in millimeters between the centers of the pupils of the eyes.

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Rangefinder

A rangefinder is a device that measures distance from the observer to a target, in a process called ranging.

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Ratio

In mathematics, a ratio is a relationship between two numbers indicating how many times the first number contains the second.

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Reflectance

Reflectance of the surface of a material is its effectiveness in reflecting radiant energy.

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Reflection (physics)

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.

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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).

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Refractive index

In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.

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Relay lens

In optics, a relay lens is a lens or lens group that inverts an image and extends the optical tube.

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Reticle

A reticle, or reticule, also known as a graticule, is a pattern of fine lines or markings built into the eyepiece of a sighting device, such as a telescopic sight in a telescope, a microscope, or the screen of an oscilloscope, to provide references during visual examination.

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Roof prism

A roof prism (also called a Dach prism or Dachkanten prism, from the German: "Dachkante", lit. roof edge) is a reflective optical prism containing a section where two faces meet at a 90° angle.

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Sagittarius (constellation)

Sagittarius is one of the constellations of the zodiac.

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Saturn

Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.

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Schmidt–Pechan prism

A Schmidt–Pechan prism is a type of optical prism used to rotate an image by 180°.

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Set screw

A set screw is a type of screw generally used to secure an object within or against another object, normally not using a nut (see bolts compared with screws).

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Sky & Telescope

Sky & Telescope (S&T) is a monthly American magazine covering all aspects of amateur astronomy, including the following.

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Spotting scope

A spotting scope is a small portable high-power telescope with added optics to present an erect image, optimized for the observation of terrestrial objects.

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Stadiametric rangefinding

Stadiametric rangefinding, or the stadia method is a technique of measuring distances with a telescopic instrument.

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Sunagor

Sunagor is a Japanese manufacturer and brand of optical products, founded in 1948.

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Supernova

A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.

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Swarovski Optik

Swarovski Optik is a division of the Swarovski group of companies, manufacturing high-quality optical instruments.

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Takahashi Seisakusho

Takahashi Seisakusho is a Japanese manufacturer of telescopes and related equipment, such as eyepieces and mounts.

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Tasco

Tasco (also known as Tasco Worldwide) is a major distributor of consumer telescopes worldwide.

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Theatre

Theatre or theater is a collaborative form of fine art that uses live performers, typically actors or actresses, to present the experience of a real or imagined event before a live audience in a specific place, often a stage.

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Titan (moon)

Titan is the largest moon of Saturn.

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Total internal reflection

Total internal reflection is the phenomenon which occurs when a propagated wave strikes a medium boundary at an angle larger than a particular critical angle with respect to the normal to the surface.

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Tourist attraction

A tourist attraction is a place of interest where tourists visit, typically for its inherent or exhibited natural or cultural value, historical significance, natural or built beauty, offering leisure and amusement.

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Tower viewer

A tower viewer is a telescope or binoculars permanently mounted on a stalk.

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Uranus

Uranus is the seventh planet from the Sun.

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Venus

Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.

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Vignetting

In photography and optics, vignetting (vignette) is a reduction of an image's brightness or saturation toward the periphery compared to the image center.

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Vivitar

Vivitar Corporation was a manufacturer, distributor, and marketer of photographic and optical equipment originally based in Santa Monica, California.

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Vixen (telescopes)

Vixen is a Japanese company that makes telescopes, binoculars, spotting scopes and accessories for their products.

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Vortex Optics

Vortex Optics is an American company developing optics for hunting, bird watching, wildlife watching, outdoor recreational sports, and law enforcement.

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Wave interference

In physics, interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude.

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World War II

World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.

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Yukon Optics

Yukon Advanced Optics Worldwide is a Lithuanian company that designs and manufactures outdoor optics, including binoculars, spotting scopes, rifle sights, rangefinders, and a selection of night vision systems.

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Zoom lens

A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed focal length (FFL) lens (see prime lens).

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10 Hygiea

10 Hygiea is the fourth-largest asteroid in the Solar System by volume and mass, and it is located in the asteroid belt.

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2 Pallas

Pallas, minor-planet designation 2 Pallas, is the second asteroid to have been discovered (after Ceres), and is one of the largest asteroids in the Solar System.

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4 Vesta

Vesta, minor-planet designation 4 Vesta, is one of the largest objects in the asteroid belt, with a mean diameter of.

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511 Davida

511 Davida is a large C-type asteroid in the asteroid belt.

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52 Europa

52 Europa is the 6th-largest asteroid in the asteroid belt, having an average diameter of around 315 km.

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704 Interamnia

704 Interamnia is a very large asteroid, with an estimated diameter of 350 kilometres.

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Redirects here:

Binoc, Binocs, Binocular Instrument, Binocular instrument, Binocular telescope, Field Glasses, Field glass, Field glasses, Periscope binoculars, Phase correction coating, Prism binoculars.

References

[1] https://en.wikipedia.org/wiki/Binoculars

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