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McDonald Observatory
McDonald Observatory is an astronomical observatory located near unincorporated community of Fort Davis in Jeff Davis County, Texas, United States. The facility is located on Mount Locke in the Davis Mountains of West Texas, with additional facilities on Mount Fowlkes, approximately to the northeast. The observatory is part of The University of Texas at Austin. It is an organized research unit of the College of Natural Sciences. The observatory produces ''StarDate'', a daily syndicated radio program consisting of short segments related to astronomy that airs on both National Public Radio and commercial radio stations — about 400 affiliates in all. History McDonald Observatory was originally endowed by the Texas banker William Johnson McDonald (1844–1926), who left about $1 million — the bulk of his fortune — to The University of Texas at Austin to endow an astronomical observatory. The provision of the will was challenged by McDonald's relatives, but after a long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jeff Davis County, Texas
Jeff Davis County is a county in the U.S. state of Texas. As of the 2020 census, its population was 1,996. Its county seat is Fort Davis. The county is named for Jefferson Davis, who served as the 23rd United States Secretary of War in the 1850s, and as President of the Confederate States of America. Jeff Davis County is recognizable for its unique shape; it is a pentagon that has no north–south nor east–west boundaries, save for a six-mile line serving as its southern boundary. It is the only county in the United States that touches a foreign country (Mexico) at a single point. Jeff Davis is one of the nine counties that compose the Trans-Pecos region of West Texas. The county contains the Texas Davis Mountains American Viticultural Area. About are "under vine". The McDonald Observatory, owned by the University of Texas at Austin, is located near Fort Davis. History Native Americans Prehistoric peoples camped at Phantom Lake Spring, in present-day northeastern Jef ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extragalactic Astronomy
Extragalactic astronomy is the branch of astronomy concerned with objects outside the Milky Way galaxy. In other words, it is the study of all astronomical objects which are not covered by galactic astronomy. The closest objects in extragalactic astronomy include the galaxies of the Local Group, which are close enough to allow very detailed analyses of their contents (e.g. supernova remnants, stellar associations). As instrumentation has improved, distant objects can now be examined in more detail and so extragalactic astronomy includes objects at nearly the edge of the observable universe. Research into distant galaxies (outside of our local group) is valuable for studying aspects of the universe such as galaxy evolution and Active Galactic Nuclei (AGN) which give insight into physical phenomena (e.g. super massive black hole accretion and the presence of dark matter). It is through extragalactic astronomy that astronomers and physicists are able to study the effects of General ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visible-light Astronomy
Visible-light astronomy encompasses a wide variety of observations via telescopes that are sensitive in the range of visible light (optical telescopes). Visible-light astronomy is part of optical astronomy, and differs from astronomies based on invisible types of light in the electromagnetic radiation spectrum, such as radio waves, infrared waves, ultraviolet waves, X-ray waves and gamma-ray waves. Visible light ranges from 380 to 750 nanometers in wavelength. Visible-light astronomy has existed as long as people have been looking up at the night sky, although it has since improved in its observational capabilities since the invention of the telescope, which is commonly credited to Hans Lippershey, a German-Dutch spectacle-maker, although Galileo played a large role in the development and creation of telescopes. Visible-light astronomy continues to get better in the modern day, with projects such as the James Webb Space Telescope. Since visible-light astronomy is restricted t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imaging Science
Imaging is the representation or reproduction of an object's form; especially a visual representation (i.e., the formation of an image). Imaging technology is the application of materials and methods to create, preserve, or duplicate images. Imaging science is a multidisciplinary field concerned with the generation, collection, duplication, analysis, modification, and visualization of images,Joseph P. Hornak, ''Encyclopedia of Imaging Science and Technology'' (John Wiley & Sons, 2002) including imaging things that the human eye cannot detect. As an evolving field it includes research and researchers from physics, mathematics, electrical engineering, computer vision, computer science, and perceptual psychology. ''Imager'' are imaging sensors. Imaging chain The foundation of imaging science as a discipline is the "imaging chain" – a conceptual model describing all of the factors which must be considered when developing a system for creating visual renderings (images). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HET Dome
Het or HET may refer to: Science and technology * Hall-effect thruster, a type of ion thruster used for spacecraft propulsion * Heavy Equipment Transporter, a vehicle in the US Army's Heavy Equipment Transport System * Hobby–Eberly Telescope, an instrument at the University of Texas McDonald Observatory * Human enhancement Technologies, devices for enhancing the abilities of human beings * Heterozygote, a diploid organism with differing alleles at a genetic locus; see zygosity * Hexaethyl tetraphosphate, in chemistry * HET acid, alternate term for Chlorendic acid Other uses * Hét, a village in Hungary * Het peoples, or their language * Heterosexuality, sexual attraction to the opposite sex * ''HighEnd Teen'' (2008–2017), a former Indonesian magazine * Historical Enquiries Team (2005–2014), a former unit of the Police Service of Northern Ireland * Holocaust Educational Trust, a British charity * HET, IATA code for Hohhot Baita International Airport, in Inner Mongolia, China ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taft E
Taft most commonly refers to William Howard Taft (1857–1930), 27th president of the United States. Taft may also refer to: People * Taft (surname), including a list of people with the name *Taft family, a political dynasty that includes President Taft * Justice Taft (other) Place names Germany *Taft (Ulster), a river of Hesse and Thuringia, tributary of the Ulster Iran * Taft, Fars, a village in Poshtkuh-e Rostam Rural District * Taft, Yazd, a city in Yazd Province *Taft County, a county in Yazd Province that includes the above city Philippines *Taft, Eastern Samar *Taft Avenue **Taft Avenue MRT Station United States * Taft, California * Taft, California, former name of Cromberg, California * Taft, Florida * Taft, Kentucky * Taft, Louisiana * Taft, Minnesota * Taft, Missouri * Taft, Montana * Taft, Oklahoma * Taft, Oregon * Taft, Tennessee * Taft, Texas * Taft, Virginia * Taft, Wisconsin * The Taft School in Watertown, Connecticut, founded by Horace Dutton Taft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David L
David (; , "beloved one") (traditional spelling), , ''Dāwūd''; grc-koi, Δαυΐδ, Dauíd; la, Davidus, David; gez , ዳዊት, ''Dawit''; xcl, Դաւիթ, ''Dawitʿ''; cu, Давíдъ, ''Davidŭ''; possibly meaning "beloved one". was, according to the Hebrew Bible, the third king of the United Kingdom of Israel. In the Books of Samuel, he is described as a young shepherd and harpist who gains fame by slaying Goliath, a champion of the Philistines, in southern Canaan. David becomes a favourite of Saul, the first king of Israel; he also forges a notably close friendship with Jonathan, a son of Saul. However, under the paranoia that David is seeking to usurp the throne, Saul attempts to kill David, forcing the latter to go into hiding and effectively operate as a fugitive for several years. After Saul and Jonathan are both killed in battle against the Philistines, a 30-year-old David is anointed king over all of Israel and Judah. Following his rise to power, David ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frank N
Frank or Franks may refer to: People * Frank (given name) * Frank (surname) * Franks (surname) * Franks, a medieval Germanic people * Frank, a term in the Muslim world for all western Europeans, particularly during the Crusades - see Farang Currency * Liechtenstein franc or frank, the currency of Liechtenstein since 1920 * Swiss franc or frank, the currency of Switzerland since 1850 * Westphalian frank, currency of the Kingdom of Westphalia between 1808 and 1813 * The currencies of the German-speaking cantons of Switzerland (1803–1814): ** Appenzell frank ** Argovia frank ** Basel frank ** Berne frank ** Fribourg frank ** Glarus frank ** Graubünden frank ** Luzern frank ** Schaffhausen frank ** Schwyz frank ** Solothurn frank ** St. Gallen frank ** Thurgau frank ** Unterwalden frank ** Uri frank ** Zürich frank Places * Frank, Alberta, Canada, an urban community, formerly a village * Franks, Illinois, United States, an unincorporated community * Franks, Missouri, United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harlan James Smith
Harlan James Smith (August 25, 1924 – October 17, 1991) was an American astronomer. He served as director of the University of Texas McDonald Observatory from 1963 to 1989, where, among other accomplishments, he initiated the construction of the Harlan J. Smith Telescope, a 2.7-meter (107-inch) reflector now bearing his name . He came to McDonald Observatory as director in 1963, when he was also named chair of the University of Texas Astronomy Department in Austin, Texas. McDonald Observatory itself is located 440 miles west of Austin, in the Davis Mountains of West Texas. As head of the observatory, Smith's first major act was to obtain the funds needed to build the 2.7m telescope. Toward that end, he persuaded NASA the telescope was needed in support of space missions to the planets. The telescope brought new life to the observatory and helped recruit young faculty members, establishing McDonald as key player in the exploration of the solar system. In 1991, Smith received the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Wilson Morgan
William Wilson Morgan (January 3, 1906 – June 21, 1994) was an American astronomer and astrophysicist. The principal theme in Morgan's work was stellar and galaxy classification. He is also known for helping prove the existence of spiral arms in our galaxy. In addition to his scientific achievements he served as a professor and as astronomy director for University of Chicago, and was the managing editor for George Hale's Astrophysical Journal. Scientific achievements Along with Philip Keenan he developed the MK system for the classification of stars through their spectra. He also developed several galaxy morphological classification systems, including the first systems to use the physical, quantifiable properties of galaxies, as opposed to simple, qualitative, eyeball estimates favoured by Edwin Hubble. He invented the now widely used classification cD for massive galaxies in the centres of galaxy clusters. In 1970, along with astronomer Laura P. Bautz, they created the stil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bengt Georg Daniel Strömgren
Bengt may refer to: People In arts, entertainment and media Actors * Bengt Djurberg (1898–1941), Swedish actor and singer * Bengt Ekerot (1920–1971), Swedish actor and director * Bengt Eklund (1925–1998), Swedish actor * Bengt Logardt (1914–1994), Swedish actor, screenwriter and film director * Bengt Nilsson (actor) (born 1954), Swedish actor Journalists and writers * Bengt Feldreich (1925-2019), Swedish journalist and teacher * Bengt Frithiofsson (born 1939), Swedish wine writer * Bengt Lidner (1757–1793), Swedish poet * Bengt Linder (1929–1985), Swedish writer and journalist * Bengt Magnusson (born 1950), Swedish journalist and a TV presenter * Bengt Pohjanen (born 1944), Swedish author, translator and priest In music * Bengt Berger (born 1942), Swedish jazz drummer, composer and producer * Bengt Calmeyer, Swedish musician in the band Turbonegro * Bengt Djurberg (1898–1941), Swedish actor and singer * Bengt Forsberg (born 1952), Swedish concert pianist * Bengt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerard Peter Kuiper
Gerard Peter Kuiper (; ; born Gerrit Pieter Kuiper; 7 December 1905 – 23 December 1973) was a Dutch astronomer, planetary scientist, selenographer, author and professor. He is the eponymous namesake of the Kuiper belt. Kuiper is considered by many to be the father of modern planetary science. Early life and career Kuiper, the son of a tailor in the village of Tuitjenhorn in North Holland, had an early interest in astronomy. He had extraordinarily sharp eyesight, allowing him to see with the naked eye magnitude 7.5 stars, about four times fainter than those visible to normal eyes. He studied at Leiden University in 1924, where at the time a very large number of astronomers had congregated. He befriended fellow students Bart Bok and Pieter Oosterhoff, and was taught by Ejnar Hertzsprung, Antonie Pannekoek, Willem de Sitter, Jan Woltjer, Jan Oort, and the physicist Paul Ehrenfest. He received his candidate degree in Astronomy in 1927 and continued straight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
