Palomar Observatory

The Palomar Observatory Sky Survey (POSS), sponsored by the National Geographic institute, was completed in 1958 (The first plates were shot in November 1948 to and the last in April 1958). This survey was performed using 14 inch² or (6 degree)² blue-sensitive (Kodak 103a-O) and red-sensitive (Kodak 103a-E) photographic plates on the 48 inch (1.22 m) Samuel Oschin Schmidt reflecting telescope. The survey covered the sky from a declination of +90 degrees (celestial north pole) to -27 degrees and all right ascensions and had a sensitivity to ...

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Palomar Observatory, Palomar Observatory - The Hale Telescope, Palomar Observatory - Palomar Observatory Sky Survey, Palomar Observatory - Current research

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Telescopes found at Mauna Kea Observatory are funded by government agencies of various nations. The University of Hawai'i itself directly administers two telescopes. In total there are twelve telescopes at or around the summit of Mauna Kea. Caltech Submillimeter Observatory (CSO): Caltech Canada France Hawai'i Telescope (CFHT): Canada, France, University of Hawai'i Gemini North Telescope: United States, United Kingdom, Canada, Chile, Australia, Argentina, Brazil Infra-Red Telesc ...

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Mauna Kea Observatory, Mauna Kea Observatory - Telescopes

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The California Institute of Technology (commonly referred to as Caltech) is a private, coeducational university located in Pasadena, California, in the United States. One of the world's premier research universities, Caltech maintains a strong emphasis on the natural sciences and engineering. Caltech also owns and manages the Jet Propulsion Laboratory (JPL), an autonomous-space-flight complex that oversees the design and operation of most of NASA's space-probes. California Institute of Technology - History. Including:

• California Institute of Technology - History
• California Institute of Technology - Academics
• California Institute of Technology - Academic departments
• California Institute of Technology - Undergraduate program
• California Institute of Technology - Student life
• California Institute of Technology - House system
• California Institute of Technology - Traditions

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The Carnegie Institution of Washington (CIW) is a foundation established by Andrew Carnegie in 1902 to support scientific research. Its first president was Daniel Coit Gilman, founder of Johns Hopkins Medical School. Today the CIW supports science in six main areas: plant biology, developmental biology, global ecology, Earth and planetary sciences, and astronomy (through the Observatories of the Carnegie Institution of Washington (OCIW)). One of the Institution's first grant recipients was George Hale in 1904. Hale neede ...

Including:

• Carnegie Institution of Washington - Presidents of the CIW

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Brown dwarfs are sub-stellar objects (~5 to 90 Jupiter masses) that do not fuse hydrogen into helium in their cores, as do stars on the main sequence, but have fully convective surfaces and interiors, with no chemical differentiation by depth. There is some question as to whether brown dwarfs are required to have experienced fusion at some point in their history; in any event, brown dwarfs heavier than 13 Jupiter masses (MJ) do fuse deuterium. Brown dwarf - HistoryIncluding:

• Brown dwarf - History
• Brown dwarf - In theory
• Brown dwarf - Distinguishing heavy brown dwarfs from light stars
• Brown dwarf - Distinguishing light brown dwarfs from large planets
• Brown dwarf - In practice
• Brown dwarf - Observational techniques
• Brown dwarf - Milestones
• Brown dwarf - Recent developments

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Active optics is a relatively new technology for reflecting telescopes. Active optics works by "actively" adjusting the telescope's mirrors. This method is used by, among others, the Nordic Optical Telescope, the New Technology Telescope and the Keck telescopes, as well as all large telescopes built in the last decade. Most modern telescopes are reflectors, with the primary element being a very large mirror. Historically, a fixed weight-to-diameter relation was used to build these mirrors, limiting their maximum diameter to 5 or 6 meters ( ...

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1948 (MCMXLVIII) is a leap year starting on Thursday (link will take you to calendar). 1948 - Events. 1948 - January-February. January 1 - Nationalisation of UK railways to form British Railways. Arab militants lay siege to the Jewish Quarter of the Old City of Jerusalem. First day of the Italian republican constitution. January 4 - Burma gains its independence from the United Kingdom. January 5 - Warner Brothers shows the first color newsreel (Tou ...

Including:

• 1948 - Events
• 1948 - January-February
• 1948 - March-April
• 1948 - May
• 1948 - June-July
• 1948 - August-December
• 1948 - Undated
• 1948 - Unknown date
• 1948 - Births
• 1948 - January-February
• 1948 - March-April
• 1948 - May-July
• 1948 - August-December
• 1948 - Unknown date
• 1948 - Deaths
• 1948 - Nobel Prizes

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The Apollo, Venus- and Mars-crosser asteroid 2063 Bacchus was discovered on April 24, 1977 by Charles T. Kowal at the Palomar Observatory. In March 1996 radar imaging of the asteroid was conducted at the Goldstone Observatory under the direction of JPL scientists Steven Ostro and Lance Benner. Optical observations were conducted by Petr Pravec, Marek Wolf, and Lenka Šarounová during March and April 1996. The asteroid is thought to be about 1.1×1.1×2.6 km in size. It is classified as a Q-type asteroid.< ...

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• 2063 Bacchus - External link

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50000 Quaoar (pronounced kwaa'·waar or kwow'·ər, Tongva [ˈqʷɑoɑr]) [1] is a Trans-Neptunian object orbiting the Sun in the Edgeworth-Kuiper belt. It was discovered on June 4, 2002 by astronomers Chad Trujillo and Michael Brown at the California Institute of Technology in Pasadena, California from images acquired at the Samuel Oschin Telescope at Palomar Observatory. This discovery was ...

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1810 Epimetheus is an asteroid that was discovered on September 24, 1960 by Cornelis Johannes Van Houten, Ingrid Van Houten-Groeneveld, and Tom Gehrels at Palomar Observatory near Pauma Valley, California. It was named after Epimetheus the Titan in Greek mythology. One of Saturn's satellites is also named Epimetheus. Orbital revolution: 3 years, 115 days … | Previous minor planet ...

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90377 Sedna is a trans-Neptunian object, discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003. Its discovery was the farthest distance at which any natural object in the solar system has ever been observed. Sedna is described as a cold planetoid, perhaps as large as two-thirds the size of Pluto. 90377 Sedna - General information. Sedna was discovered during a survey conducted with the Samuel Oschin telescope at Palomar Observat ...

Including:

• 90377 Sedna - General information
• 90377 Sedna - Orbital characteristics
• 90377 Sedna - Physical characteristics
• 90377 Sedna - Classification

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Castalia's orbit took it within eleven lunar distances of Earth, allowing it to be scanned with radar from the Arecibo Observatory by Scott Hudson (Washington State University) and Steven J. Ostro (JPL). The obtained data allowed astronomers to produce a three-dimensional computer model of it. Castalia was found to have a peanut shape, suggesting two 800 m diameter pieces held together by their weak mutual gravity. Since then radar measurements of other asteroids has indicated that ...

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4769 Castalia, 4769 Castalia - General information

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Gamma ray burst - Early theories. The combination of obvious brightness and implied distance of GRB 990123 led to two possibilities. The first was that the radiation of the gamma ray burst was spread evenly. This implied that the gamma-ray energy released by the burst was equivalent to that which would be produced by converting the entire mass of a star 1.3 times the mass of our Sun completely into gamma radiation (see mass-energy equivalence). At visual wavelengths, if the burst had occurred 2,000 light years away within our own Galax ...

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Gamma ray burst, Gamma ray burst - Discovery, Gamma ray burst - Pinpointing a burst: GRB 970228, Gamma ray burst - Caught in the act: GRB 990123, Gamma ray burst - What is a GRB?, Gamma ray burst - Early theories, Gamma ray burst - Modern ideas, Gamma ray burst - Mass extinction on Earth, Gamma ray burst - List of GRBs, Gamma ray burst - Notable GRBs, Gamma ray burst - Extreme GRBs, Gamma ray burst - Soft Gamma Repeater

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Reflecting telescope - Schmidt camera. The Schmidt camera, invented by Bernhard Schmidt, is not technically a telescope since the light path does not exit to an eyepiece. Therefore it is strictly a camera, with a photographic plate, film or a CCD placed at the prime focus. The Schmidt camera corrects for spherical aberration by placing a correcting lens at the center of curvature of the mirror. The corrector, which is thicker in the middle and the edges, corrects the light paths so that the outer and inner parts ...

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Reflecting telescope, Reflecting telescope - Technical considerations, Reflecting telescope - Reflecting telescope designs, Reflecting telescope - Schmidt camera, Reflecting telescope - Newtonian focus, Reflecting telescope - Cassegrain focus, Reflecting telescope - Focal planes, Reflecting telescope - Prime focus, Reflecting telescope - Coudé focus

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The Schmidt camera was designed by Bernhard Schmidt (1879-1935). Its optical components are an easy to make spherical primary mirror, and an aspherical correcting lens, known as a corrector plate, located at the radius of curvature of the primary mirror. The film or other detector is placed inside the camera, at the prime focus. The design is noted for allowing very fast focal ratios, while controlling coma and astigmatism. Schmidt cameras have very strongly curved focal planes, thus requiring that the film, plate, or other detector b ...

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Schmidt camera, Schmidt camera - Invention and Design, Schmidt camera - Applications, Schmidt camera - Derivative Designs

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Sedna was discovered during a survey conducted with the Samuel Oschin telescope at Palomar Observatory near San Diego, California (USA) and was observed within days on telescopes from Chile, Spain, and the USA (Arizona, and Hawaii). NASA's orbiting Spitzer Space Telescope was also pointed toward the object, but could not detect it — putting an upper-bound on its diameter at roughly three-quarters that of Pluto. Because of its cold, distant nature, and because all other planets of the Solar system are named after (Roman and Greek) go ...

See also:

90377 Sedna, 90377 Sedna - General information, 90377 Sedna - Orbital characteristics, 90377 Sedna - Physical characteristics, 90377 Sedna - Classification

Read more here: » 90377 Sedna: Encyclopedia II - 90377 Sedna - General information

1948 - January-February. January 1 - Nationalisation of UK railways to form British Railways. Arab militants lay siege to the Jewish Quarter of the Old City of Jerusalem. First day of the Italian republican constitution. January 4 - Burma gains its independence from the United Kingdom. January 5 - Warner Brothers shows the first color newsreel (Tournament of Roses Parade and the Rose Bowl). January 17 - Truce between nationalist Indonesian and Dutch troops in Java January ...

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1948, 1948 - Events, 1948 - January-February, 1948 - March-April, 1948 - May, 1948 - June-July, 1948 - August-December, 1948 - Undated, 1948 - Unknown date, 1948 - Births, 1948 - January-February, 1948 - March-April, 1948 - May-July, 1948 - August-December, 1948 - Unknown date, 1948 - Deaths, 1948 - Nobel Prizes

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European settlement in what is now San Diego County began with the founding of the Mission San Diego de Alcala by the Spanish, in 1769. San Diego County was one of the original counties of California, and was created at the time of statehood in 1850. It was named after San Diego Bay, which had been rechristened in 1602 by Sebastián Vizcaíno in honor of the Franciscan St. Didacus of Alcalá, known in Spanish as San Diego de Alcalá de Henares, and whose name was borne by Vizcaíno's flagship. Parts of the county were later divided off to create R ...

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San Diego County California, San Diego County California - History, San Diego County California - Geography, San Diego County California - Adjacent Counties, San Diego County California - Sites of interest, San Diego County California - Observatories, San Diego County California - Wine regions, San Diego County California - Politics, San Diego County California - Demographics, San Diego County California - Current estimates, San Diego County California - Cities and towns in San Diego County, San Diego County California - Airports

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George Ellery Hale received the 60 inch (1.5 m) blank mirror, cast by Saint Gobain in France, in 1896 as a gift from his father, William Hale. It was a glass disk 7 1/2 inches (191 mm) thick and weighing 1900 pounds (860 kg). However it was not until 1904 that Hale received funding from the Carnegie Institution to build an observatory. Grinding began in 1905 and took two years. The mounting and structure for the telescope was built in San Francisco and barely survived the 1906 earthquake. Transporting the pieces to the top of Mount Wilson wa ...

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Mount Wilson Observatory, Mount Wilson Observatory - 60 inch 1.5 m Hale telescope, Mount Wilson Observatory - 100 inch 2.5 m Hooker telescope, Mount Wilson Observatory - Solar telescopes, Mount Wilson Observatory - Interferometry

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Modern Caltech grew from a vocational school founded in Pasadena in 1891 by local businessman and politician Amos G. Throop. The school was known successively as Throop University, Throop Polytechnic Institute, and Throop College of Technology, before acquiring its current name in 1920. Caltech and Polytechnic School were part of the same insitution till 1907. Polytechnic School is now a priv ...

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California Institute of Technology, California Institute of Technology - History, California Institute of Technology - Academics, California Institute of Technology - Academic departments, California Institute of Technology - Undergraduate program, California Institute of Technology - Student life, California Institute of Technology - House system, California Institute of Technology - Traditions

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