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Canopus Hill Observatory
The Canopus Hill Observatory, located approximately 12 km from Hobart in Tasmania, Australia, is an optical astronomy observatory belonging to the University of Tasmania (UTAS). Due to the high southern latitude, the Canopus Hill Observatory is able to observe and study the Magellanic Clouds. However, the observatory has closed down due to the "encroaching light pollution from the Hobart suburbs". According to the Astronomical Society, light pollution reduces the vision of the night sky, becoming a "major menace to amateur and professional astronomers alike". Telescope The Canopus Hill Observatory has a variety of telescope instrumentation, including a 2-channel high speed photometer with UBVR, clear filters, a CCD photometer with SITe 512x512 pixel illuminated backside-thinned CCD and quick change 6-channel filter wheel. According to the UTAS, these telescope instrumentations are attached at the f/11 Cassegrain focus. There is also a 16" telescope that is used for observat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Tasmania
The University of Tasmania (UTAS) is a public research university, primarily located in Tasmania, Australia. Founded in 1890, it is Australia's fourth oldest university. Christ College (University of Tasmania), Christ College, one of the university's residential colleges, first proposed in 1840 in Lieutenant-Governor Sir John Franklin's Legislative Council, was modelled on the University of Oxford, Oxford and University of Cambridge, Cambridge colleges, and was founded in 1846, making it the oldest tertiary institution in the country. The university is a Sandstone universities, sandstone university, a member of the international Association of Commonwealth Universities, and the Association of Southeast Asian Institutions of Higher Learning. The university offers various undergraduate and graduate programs in a range of disciplines, and has links with 20 specialist research institutes and co-operative research centres. Its Institute for Marine and Antarctic Studies has strongly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hobart
Hobart ( ) is the capital and most populous city of the island state of Tasmania, Australia. Located in Tasmania's south-east on the estuary of the River Derwent, it is the southernmost capital city in Australia. Despite containing nearly half of Tasmania's population, Hobart is the least-populated Australian state capital city, and second-smallest by population and area after Darwin if territories are taken into account. Material was copied from this source, which is available under Creative Commons Attribution 4.0 International License Its skyline is dominated by the kunanyi / Mount Wellington, and its harbour forms the second-deepest natural port in the world, with much of the city's waterfront consisting of reclaimed land. The metropolitan area is often referred to as Greater Hobart, to differentiate it from the City of Hobart, one of the seven local government areas that cover the city. It has a mild maritime climate. The city lies on country which was known by the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasmania
Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The state encompasses the main island of Tasmania, the List of islands by area#Islands, 26th-largest island in the world, and the List of islands of Tasmania, surrounding 1000 islands. It is Australia's smallest and least populous state, with 573,479 residents . The List of Australian capital cities, state capital and largest city is Hobart, with around 40% of the population living in the Greater Hobart area. Estimated resident population, 30 June 2017. Tasmania is the most decentralised state in Australia, with the lowest proportion of its residents living within its capital city. Tasmania's main island was first inhabited by Aboriginal Australians, Aboriginal peoples, who today generally identify as Palawa or Pakana. It is believed that Abori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller islands. It has a total area of , making it the list of countries and dependencies by area, sixth-largest country in the world and the largest in Oceania. Australia is the world's flattest and driest inhabited continent. It is a megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and Climate of Australia, climates including deserts of Australia, deserts in the Outback, interior and forests of Australia, tropical rainforests along the Eastern states of Australia, coast. The ancestors of Aboriginal Australians began arriving from south-east Asia 50,000 to 65,000 years ago, during the Last Glacial Period, last glacial period. By the time of British settlement, Aboriginal Australians spoke 250 distinct l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magellanic Clouds
The Magellanic Clouds (''Magellanic system'' or ''Nubeculae Magellani'') are two irregular dwarf galaxies in the southern celestial hemisphere. Orbiting the Milky Way galaxy, these satellite galaxies are members of the Local Group. Because both show signs of a bar structure, they are often reclassified as Magellanic spiral galaxies. The two galaxies are the following: * Large Magellanic Cloud (LMC), about away * Small Magellanic Cloud (SMC), about away The Magellanic Clouds are visible to the unaided eye from the Southern Hemisphere, but cannot be observed from the most northern latitudes. History They may be the objects mentioned by the polymath Ibn Qutaybah (d. 889 CE), in his book on ''Al-Anwā̵’'' (the stations of the Moon in pre-Islamic Arabian culture): وأسفل من سهيل قدما سهيل . وفى مجرى قدمى سهيل، من خلفهما كواكب زهر كبار، لا ترى بالعراق، يسميها أهل تهامة الأعبار And be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CCD Photometry
In astronomy, photometry, from Greek '' photo-'' ("light") and '' -metry'' ("measure"), is a technique used in astronomy that is concerned with measuring the flux or intensity of light radiated by astronomical objects. This light is measured through a telescope using a photometer, often made using electronic devices such as a CCD photometer or a photoelectric photometer that converts light into an electric current by the photoelectric effect. When calibrated against standard stars (or other light sources) of known intensity and colour, photometers can measure the brightness or apparent magnitude of celestial objects. The methods used to perform photometry depend on the wavelength region under study. At its most basic, photometry is conducted by gathering light and passing it through specialized photometric optical bandpass filters, and then capturing and recording the light energy with a photosensitive instrument. Standard sets of passbands (called a photometric system) are def ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cassegrain Focus
The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas, the main characteristic being that the optical path folds back onto itself, relative to the optical system's primary mirror entrance aperture. This design puts the focal point at a convenient location behind the primary mirror and the convex secondary adds a telephoto effect creating a much longer focal length in a mechanically short system. In a symmetrical Cassegrain both mirrors are aligned about the optical axis, and the primary mirror usually contains a hole in the center, thus permitting the light to reach an eyepiece, a camera, or an image sensor. Alternatively, as in many radio telescopes, the final focus may be in front of the primary. In an asymmetrical Cassegrain, the mirror(s) may be tilted to avoid obscuration of the primary or to avoid the need for a hole in the primary mirror (or both). The classic Cassegrain con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bisdee Tier Optical Astronomy Observatory
The Greenhill Observatory is an astronomical observatory operated by the University of Tasmania (UTAS) on Bisdee Tier, near Spring Hill, Tasmania. The observatory is located roughly 50 km (30 miles) north of Hobart, (Australia). The nearest municipality is the village of Jericho. The observatory was officially opened by the Governor of Tasmania in February, 2013. The facility is named in honour of longtime University of Tasmania astrophysicist Dr John G. Greenhill (1933-2014). Telescopes The site replaces the University of Tasmania's previous observatory at Canopus Hill, near Hobart. The site was developed with the installation of a 1.3 m telescope in mind, and consideration given for possible future expansion. One telescope is currently hosted, the Harlingten Telescope (H127). * The H127 is a diameter reflector of modified Ritchey-Chrétien design, on an equatorial fork mount. The H127 has a rotating tertiary mirror and wide-field corrector lenses installed at two folded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Astronomical Observatories
This is a partial list of astronomical observatories ordered by name, along with initial dates of operation (where an accurate date is available) and location. The list also includes a final year of operation for many observatories that are no longer in operation. While other sciences, such as volcanology and meteorology, also use facilities called observatories for research and observations, this list is limited to observatories that are used to observe celestial objects. Astronomical observatories are mainly divided into four categories: space-based, airborne, ground-based, and underground-based. Many modern telescopes and observatories are located in space to observe astronomical objects in wavelengths of the electromagnetic spectrum that cannot penetrate the Earth's atmosphere (such as ultraviolet radiation, X-rays, and gamma rays) and are thus impossible to observe using ground-based telescopes. Being above the atmosphere, these space observatories can also avoid the effects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
