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What (who) is MDM Observatory - definition
MDM Observatory
AN OPTICAL ASTRONOMICAL OBSERVATORY
Hiltner Telescope; McGraw-Hill Telescope; Michigan-Dartmouth-MIT Observatory
The MDM Observatory (Michigan-Dartmouth-MIT Observatory; obs. code: 697) is an optical astronomical observatory located adjacent to Kitt Peak National Observatory on Kitt Peak, west of Tucson, Arizona, in the United States.
The Observatory (journal)
JOURNAL
The Observatory (astronomy); Observatory (magazine); Observatory (journal)
The Observatory is a publication, variously described as a journal, a magazine and a review, devoted to astronomy. It appeared regularly starting in 1877, and it is now published every two months.
Royal Observatory, Greenwich
![The Magnetic Pavilion, 1900](https://commons.wikimedia.org/wiki/Special:FilePath/"The Magnetic Pavilion" - Royal Observatory Greenwich ca 1900 (7890151714).jpg?width=200 "The Magnetic Pavilion, 1900")
![Dome of the [[Greenwich 28 inch refractor]] telescope and tree](https://commons.wikimedia.org/wiki/Special:FilePath/28-inch telescope, Royal Observatory and tree, Greenwich, London, UK, 2015.jpg?width=200 "Dome of the [[Greenwich 28 inch refractor]] telescope and tree")
![The Airy [[Transit Circle]], used for over a century (1851–1953) as the reference point when charting the heavens and determining times, thus earning for it the epithet "the centre of time and space"](https://commons.wikimedia.org/wiki/Special:FilePath/Airys Transit Circle.jpg?width=200 "The Airy [[Transit Circle]], used for over a century (1851–1953) as the reference point when charting the heavens and determining times, thus earning for it the epithet \"the centre of time and space\"")
![[[Shepherd Gate Clock]] at Royal Greenwich Observatory](https://commons.wikimedia.org/wiki/Special:FilePath/Greenwich clock 1-manipulated.jpg?width=200 "[[Shepherd Gate Clock]] at Royal Greenwich Observatory")
![Laser projected from the observatory marking the [[Prime Meridian]] line](https://commons.wikimedia.org/wiki/Special:FilePath/Greenwich observatory laser.jpg?width=200 "Laser projected from the observatory marking the [[Prime Meridian]] line")
![Aerial view of the Royal Greenwich Observatory, [[Herstmonceux]] site in [[East Sussex]]; the dome that formerly housed the [[Isaac Newton Telescope]] is the single dome to the right. The telescope was moved to [[La Palma]] in the [[Canary Isles]] in 1979.](https://commons.wikimedia.org/wiki/Special:FilePath/Herstmonceux Observatory aerial view.jpg?width=200 "Aerial view of the Royal Greenwich Observatory, [[Herstmonceux]] site in [[East Sussex]]; the dome that formerly housed the [[Isaac Newton Telescope]] is the single dome to the right. The telescope was moved to [[La Palma]] in the [[Canary Isles]] in 1979.")
![southern celestial hemisphere]], ca. 1730](https://commons.wikimedia.org/wiki/Special:FilePath/Illustration of Greenwich Observatory by Johann Doppelmayr.jpg?width=200 "southern celestial hemisphere]], ca. 1730")
![chronometers]] of ships on the [[River Thames]] below, prior to sailing. The observatory would first determine the time by stellar observations.](https://commons.wikimedia.org/wiki/Special:FilePath/London, Greenwich, Royal Greenwich Observatory -- 2016 -- 4695.jpg?width=200 "chronometers]] of ships on the [[River Thames]] below, prior to sailing. The observatory would first determine the time by stellar observations.")
![Greenwich Prime Meridian]]](https://commons.wikimedia.org/wiki/Special:FilePath/Prime meridian 001.jpg?width=200 "Greenwich Prime Meridian]]")
![Former Royal Greenwich Observatory, [[Herstmonceux]], East Sussex](https://commons.wikimedia.org/wiki/Special:FilePath/Royal Greenwich Observatory, Herstmonceux - April 2012.jpg?width=200 "Former Royal Greenwich Observatory, [[Herstmonceux]], East Sussex")
![The [[Queen's House]] (centre left) at Greenwich, with the Royal Observatory on the skyline behind, in 2017.](https://commons.wikimedia.org/wiki/Special:FilePath/Royal Greenwich Observatory and Greenwich Park.jpg?width=200 "The [[Queen's House]] (centre left) at Greenwich, with the Royal Observatory on the skyline behind, in 2017.")
![Quebec]] in 1759, and was buried in [[St Alfege Church, Greenwich]].](https://commons.wikimedia.org/wiki/Special:FilePath/Royal Observatory Greenwich London.jpg?width=200 "Quebec]] in 1759, and was buried in [[St Alfege Church, Greenwich]].")
![Dome of the Great Equatorial Building overlooking [[Greenwich Park]]](https://commons.wikimedia.org/wiki/Special:FilePath/The Greenwich Observatory - geograph.org.uk - 1350541.jpg?width=200 "Dome of the Great Equatorial Building overlooking [[Greenwich Park]]")
OBSERVATORY IN GREENWICH, LONDON, UK
RGO; Greenwich Royal Observatory; Royal Observatory Greenwich; Greenwich Observatory; Royal Greenwich Observatory; Greenwich Observatory, England; Greenwich observatory; Annie Maunder Astrographic Telescope; The Royal Observatory Greenwich; The Royal Observatory in Greenwich; The Royal Observatory, Greenwich
The Royal Observatory, Greenwich (ROG; known as the Old Royal Observatory from 1957 to 1998, when the working Royal Greenwich Observatory, RGO, temporarily moved south from Greenwich to Herstmonceux) is an observatory situated on a hill in Greenwich Park in south east London, overlooking the River Thames to the north. It played a major role in the history of astronomy and navigation, and because the Prime Meridian passes through it, it gave its name to Greenwich Mean Time, the precursor to today's Coordinated Universal Time (UTC).
