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Murillo Family Observatory
Murillo Family Observatory is a teaching and research observatory for California State University, San Bernardino, located on Badger Hill on the northern portion of campus, in San Bernardino, the U.S. state of California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori .... , it was the newest research observatory in the Inland Empire and in the California State University system. The observatory consists of two telescopes which are used for research and teaching; a 20-inch Ritchey-Chretien and a 17-inch Corrected Dall-Kirkham Astrograph. In addition to the research telescopes the observatory has an observation deck with piers where small telescopes may be set up for undergraduate laboratory classes or open house nights. It serves as both an academic and community resource, with p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California State University, San Bernardino
California State University, San Bernardino (Cal State San Bernardino or CSUSB) is a public research university in San Bernardino, California. Founded in 1965, it is one of the 23 general campuses of the California State University system. The main campus sits on in the University District of San Bernardino, with a branch campus of in Palm Desert, California, opened in 1986. Cal State San Bernardino's fall 2020 enrollment was 19,404. In fall 2018, it had 310 full-time faculty, of which 220 (71 percent) were on the tenure track. The university is classified as having high research activity, offering Bachelor's degrees in 123 programs, Master's degrees in 61 programs, two Doctor of Education (Ed.D.) Education Leadership (Community College specialization and K–12 specialization), and 23 teaching credentials. CSUSB's sports teams are known as the Coyotes and play in the California Collegiate Athletic Association in the NCAA Division II, Division II of the National Collegiate At ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Bernardino, California
San Bernardino (; Spanish for "Saint Bernardino") is a city and county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a population of 222,101 in the 2020 census, making it the 18th-largest city in California. San Bernardino is the economic, cultural, and political hub of the San Bernardino Valley and the Inland Empire. The governments of El Salvador, Guatemala, and Mexico have established the metropolitan area’s only consulates in the downtown area of the city. Additionally, San Bernardino serves as an anchor city to the 3rd largest metropolitan area in California (after Los Angeles and San Francisco) and the 13th largest metropolitan area in the United States; the San Bernardino-Riverside MSA. Furthermore, the city’s University District serves as a college town, as home to California State University, San Bernardino. San Bernardino was named in 1810, when Spanish priest Francisco Du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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). The RCT has a wider field of view free of optical errors compared to a more traditional reflecting telescope configuration. Since the mid 20th century, a majority of large professional research telescopes have been Ritchey–Chrétien configurations; some well-known examples are the Hubble Space Telescope, the Keck telescopes and the ESO Very Large Telescope. History The Ritchey–Chrétien telescope was invented in the early 1910s by American astronomer George Willis Ritchey and French astronomer Henri Chrétien. Ritchey constructed the first successful RCT, which had an aperture diameter of in 1927 (e.g. Ritchey 24-inch reflector). The second RCT was a instrument constructed by Ritchey for the United States Naval Observatory; that telescope is st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modified Dall–Kirkham Telescope
The Modified Dall-Kirkham telescope utilizes an elliptical primary and spherical secondary mirror as in the conventional Dall-Kirkham configuration, but also includes a lens group (usually two or three lens elements) ahead of the focal point to improve off-axis image quality. The primary mirror conic constant is slightly different from that for a conventional Dall-Kirkham and must be optimized along with the lenses during design. The usable field is much better than the Ritchey-Chrétien telescope without corrector, and over very wide spectral bands, typically 380 to 950 nanometres (edges of UV-A and near infrared) if the corrector is made of quartz. (With a corrector, the Ritchey-Chrétien System also has a better and bigger field.) Such a telescope was designed by Rosin and Wynne after World War II. The performances are equal or better than the Ritchey-Chrétien telescope. The spherical secondary can be fringe tested against a spherical concave surface or tested from behi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territories of the United States by population, most populous U.S. state and the List of U.S. states and territories by area, 3rd largest by area. It is also the most populated Administrative division, subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous Statistical area (United States), urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento, California, Sacramento is the state's capital, while Los Angeles is the List of largest California cities by population, most populous city in the state and the List of United States cities by population, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California State University
The California State University (Cal State or CSU) is a public university system in California. With 23 campuses and eight off-campus centers enrolling 485,550 students with 55,909 faculty and staff, CSU is the largest four-year public university system in the United States. It is one of three public higher education systems in the state, with the other two being the University of California system and the California Community Colleges. The CSU system is incorporated as The Trustees of the California State University. The CSU system headquarters is located in Long Beach, California. The CSU system was created in 1960 under the California Master Plan for Higher Education, and it is a direct descendant of the California State Normal Schools chartered in 1857. With over 110,000 graduates annually, the CSU is the country's greatest producer of bachelor's degrees. The university system collectively sustains more than 209,000 jobs within the state. In the 2015–16 academic year, CS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
