85 relations: Adaptive optics, Albert A. Michelson, Alfred Noyes, Andrew Carnegie, Andromeda Galaxy, Aperture synthesis, Astronomical interferometer, Betelgeuse, California Institute of Technology, Carnegie Institution for Science, Cassegrain reflector, Cepheid variable, CHARA array, Check It Out! with Dr. Steve Brule, Closure phase, Dark matter, DARPA, Edwin Hubble, Eric Becklin, Expansion of the universe, First light (astronomy), Fritz Zwicky, Galaxy, George Ellery Hale, Georgia State University, Gerry Neugebauer, Hale Telescope, Henry Norris Russell, Heterodyne, Infrared Spatial Interferometer, Interferometry, Inversion (meteorology), John Daggett Hooker, Jupiter, Kitt Peak, Lead(II) sulfide, Leviathan of Parsonstown, Light pollution, List of largest optical reflecting telescopes, List of largest optical telescopes historically, List of largest optical telescopes in the 20th century, Los Angeles, Los Angeles County, California, Los Angeles Times, Main sequence, Milky Way, Milton L. Humason, Minute and second of arc, Mount Wilson (California), Mount Wilson Toll Road, ..., Museum of Jurassic Technology, National Air and Space Museum, National Science Foundation, Nebula, Newtonian telescope, Nova (TV series), Observational astronomy, Palomar Observatory, Parallax, Pasadena, California, Photometry (astronomy), Photomultiplier, Radio astronomy, Redshift, Reflecting telescope, Robert B. Leighton, Saint-Gobain, San Diego County, California, San Francisco, San Gabriel Mountains, Seth Barnes Nicholson, Smog, Solar telescope, Spectroscopy, Stellar population, Steven F. Udvar-Hazy Center, Strategic Defense Initiative, Time delay and integration, University of California, Berkeley, University of Michigan, Walter Baade, Yerkes Observatory, Zeeman effect, 1906 San Francisco earthquake, 2009 California wildfires. Expand index (35 more) » « Shrink index
Adaptive optics (AO) is a technology used to improve the performance of optical systems by reducing the effect of incoming wavefront distortions by deforming a mirror in order to compensate for the distortion.
Albert Abraham Michelson FFRS HFRSE (December 19, 1852 – May 9, 1931) was an American physicist known for his work on measuring the speed of light and especially for the Michelson–Morley experiment.
Alfred Noyes CBE (16 September 188025 June 1958) was an English poet, short-story writer and playwright, best known for his ballads, "The Highwayman" and "The Barrel-Organ".
Andrew Carnegie (but commonly or;MacKay, p. 29. November 25, 1835August 11, 1919) was a Scottish-American industrialist, business magnate, and philanthropist.
The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth, and the nearest major galaxy to the Milky Way.
Aperture synthesis or synthesis imaging is a type of interferometry that mixes signals from a collection of telescopes to produce images having the same angular resolution as an instrument the size of the entire collection.
An astronomical interferometer is an array of separate telescopes, mirror segments, or radio telescope antennas that work together as a single telescope to provide higher resolution images of astronomical objects such as stars, nebulas and galaxies by means of interferometry.
Betelgeuse, also designated Alpha Orionis (α Orionis, abbreviated Alpha Ori, α Ori), is the ninth-brightest star in the night sky and second-brightest in the constellation of Orion.
The California Institute of Technology (abbreviated Caltech)The university itself only spells its short form as "Caltech"; other spellings such as.
The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research.
The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas.
A Cepheid variable is a type of star that pulsates radially, varying in both diameter and temperature and producing changes in brightness with a well-defined stable period and amplitude.
The Center for High Angular Resolution Astronomy (CHARA) is an optical interferometric array, owned by Georgia State University (GSU), and located on Mount Wilson, California.
Check It Out! with Dr.
The closure phase is an observable quantity in imaging astronomical interferometry, which allowed the use of interferometry with very long baselines.
Dark matter is a theorized form of matter that is thought to account for approximately 80% of the matter in the universe, and about a quarter of its total energy density.
The Defense Advanced Research Projects Agency (DARPA) is an agency of the United States Department of Defense responsible for the development of emerging technologies for use by the military.
Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer.
Eric E. Becklin (born April 6, 1940) is an American astrophysicist.
The expansion of the universe is the increase of the distance between two distant parts of the universe with time.
In astronomy, first light is the first use of a telescope (or, in general, a new instrument) to take an astronomical image after it has been constructed.
Fritz Zwicky (February 14, 1898 – February 8, 1974) was a Swiss astronomer.
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
George Ellery Hale (June 29, 1868 – February 21, 1938) was an American solar astronomer, best known for his discovery of magnetic fields in sunspots, and as the leader or key figure in the planning or construction of several world-leading telescopes; namely, the 40-inch refracting telescope at Yerkes Observatory, 60-inch Hale reflecting telescope at Mount Wilson Observatory, 100-inch Hooker reflecting telescope at Mount Wilson, and the 200-inch Hale reflecting telescope at Palomar Observatory.
Georgia State University (commonly referred to as Georgia State, State, or GSU) is a public research university in downtown Atlanta, Georgia, United States.
Gerhart "Gerry" Neugebauer (3 September 1932 – 26 September 2014) was an American astronomer known for his pioneering work in infrared astronomy.
The Hale telescope is a, f/3.3 reflecting telescope at the Palomar Observatory in California, US, named after astronomer George Ellery Hale.
Prof Henry Norris Russell FRS(For) HFRSE FRAS (October 25, 1877 – February 18, 1957) was an American astronomer who, along with Ejnar Hertzsprung, developed the Hertzsprung–Russell diagram (1910).
Heterodyning is a signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden that creates new frequencies by combining or mixing two frequencies.
The Infrared Spatial Interferometer (ISI) is an astronomical interferometer array of three 65 inch (1.65 m) telescopes operating in the mid-infrared.
Interferometry is a family of techniques in which waves, usually electromagnetic waves, are superimposed causing the phenomenon of interference in order to extract information.
In meteorology, an inversion is a deviation from the normal change of an atmospheric property with altitude.
John Daggett Hooker (1838–1911), was an American ironmaster, amateur scientist and astronomer, and philanthropist who made the initial donations for the 100-inch Hooker Telescope, one of the most famous telescopes in observational astronomy of the 20th century.
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
Kitt Peak (Ioligam) is a mountain in the U.S. state of Arizona, and at is the highest point in the Quinlan Mountains.
Lead(II) sulfide (also spelled sulphide) is an inorganic compound with the formula PbS.
Leviathan of Parsonstown, or Rosse six-foot telescope, is a historic reflecting telescope of 72 in (1.8 m) aperture, which was the largest telescope in the world from 1845 until the construction of the Hooker Telescope in 1917.
Light pollution, also known as photopollution, is the presence of anthropogenic light in the night environment.
This list of the largest optical reflecting telescopes with objective diameters of or greater is sorted by aperture, which is one limit on the light-gathering power and resolution of a reflecting telescope's optical assembly.
Telescope have grown in size since they first appeared around 1608.
The following is a list of the largest optical telescopes in the 20th century, paying special attention to the diameter of the mirror or lens of the telescope's objective, or aperture.
Los Angeles (Spanish for "The Angels";; officially: the City of Los Angeles; colloquially: by its initials L.A.) is the second-most populous city in the United States, after New York City.
Los Angeles County, officially the County of Los Angeles, is the most populous county in the United States, with more than 10 million inhabitants as of 2017.
The Los Angeles Times is a daily newspaper which has been published in Los Angeles, California since 1881.
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
The Milky Way is the galaxy that contains our Solar System.
Milton La Salle Humason (August 19, 1891 – June 18, 1972) was an American astronomer.
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
Mount Wilson is a peak in the San Gabriel Mountains, located within the San Gabriel Mountains National Monument and Angeles National Forest in Los Angeles County, California.
The Mount Wilson Toll Road (1891–1936) is a historic roadway which ascended Mount Wilson via a vehicular passable road from the base of the foothills in Altadena.
The Museum of Jurassic Technology is a museum located at 9341 Venice Boulevard in the Palms district of Los Angeles, California.
The National Air and Space Museum of the Smithsonian Institution, also called the NASM, is a museum in Washington, D.C..
The National Science Foundation (NSF) is a United States government agency that supports fundamental research and education in all the non-medical fields of science and engineering.
A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
The Newtonian telescope, also called the Newtonian reflector or just the Newtonian, is a type of reflecting telescope invented by the English scientist Sir Isaac Newton (1642–1727), using a concave primary mirror and a flat diagonal secondary mirror.
Nova (stylized NOVΛ) is an American popular science television series produced by WGBH Boston.
Observational astronomy is a division of astronomy that is concerned with recording data about the observable universe, in contrast with theoretical astronomy, which is mainly concerned with calculating the measurable implications of physical models.
Palomar Observatory is an astronomical observatory located in San Diego County, California, United States, southeast of Los Angeles, California, in the Palomar Mountain Range.
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
Pasadena is a city in Los Angeles County, California, United States, located 10 miles (16 kilometers) northeast of Downtown Los Angeles.
Photometry is a technique of astronomy concerned with measuring the flux, or intensity of an astronomical object's electromagnetic radiation.
Photomultiplier tubes (photomultipliers or PMTs for short), members of the class of vacuum tubes, and more specifically vacuum phototubes, are extremely sensitive detectors of light in the ultraviolet, visible, and near-infrared ranges of the electromagnetic spectrum.
Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies.
In physics, redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum.
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.
Robert Benjamin Leighton (September 10, 1919 – March 9, 1997) was a prominent American experimental physicist who spent his professional career at the California Institute of Technology (Caltech).
Saint-Gobain S.A. is a French multinational corporation, founded in 1665 in Paris and headquartered on the outskirts of Paris, at La Défense and in Courbevoie.
San Diego County is a county in the southwestern corner of the state of California, in the United States.
San Francisco (initials SF;, Spanish for 'Saint Francis'), officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California.
The San Gabriel Mountains are a mountain range located in northern Los Angeles County and western San Bernardino County, California, United States.
Seth Barnes Nicholson (November 12, 1891 – July 2, 1963) was an American astronomer.
Smog is a type of air pollutant.
A solar telescope is a special purpose telescope used to observe the Sun.
Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
During 1944, Walter Baade categorized groups of stars within the Milky Way into bluer stars associated with the spiral arms and the general position of yellow stars near the central galactic bulge or within globular star clusters.
The Steven F. Udvar-Hazy Center, also called the Udvar-Hazy Center, is the Smithsonian National Air and Space Museum (NASM)'s annex at Washington Dulles International Airport in the Chantilly area of Fairfax County, Virginia, United States.
The Strategic Defense Initiative (SDI) was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons (intercontinental ballistic missiles and submarine-launched ballistic missiles).
A time delay and integration or time delay integration (TDI) charge-coupled device (CCD) is an image sensor for capturing images of moving objects at low light levels.
The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public research university in Berkeley, California.
The University of Michigan (UM, U-M, U of M, or UMich), often simply referred to as Michigan, is a public research university in Ann Arbor, Michigan.
Wilhelm Heinrich Walter Baade (March 24, 1893 – June 25, 1960) was a German astronomer who worked in the United States from 1931 to 1959.
Yerkes Observatory is an astronomical observatory in Williams Bay, Wisconsin operated by the University of Chicago Department of Astronomy and Astrophysics.
The Zeeman effect, named after the Dutch physicist Pieter Zeeman, is the effect of splitting a spectral line into several components in the presence of a static magnetic field.
The 1906 San Francisco earthquake struck the coast of Northern California at 5:12 a.m. on Wednesday, April 18 with an estimated moment magnitude of 7.9 and a maximum Mercalli intensity of XI (Extreme).
The 2009 California wildfires were a series of 9,159 wildfires that were active in the state of California, USA, during the year 2009.
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