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- Neuchâtel_Observatory abstract "The Observatoire Cantonal de Neuchâtel (Neuchâtel Observatory) is an astronomical observatory funded by the Public Economy Department of the Neuchâtel State (Switzerland) . It is located in Neuchâtel and was founded in 1858. Besides astronomical observations, the Neuchâtel observatory also works with atomic clocks. Before 1967, one second was defined by the rotation of the earth, and thus Neuchâtel observatory calibrated clocks via observations. Now its telescope is used in a historical fashion by local amateur astronomers, while the calibration is done via atomic clocks.In the past, the Neuchatel Observatory was known as the Observatoire Astronomique et Chronometrique de Neuchatel, in reference to the fact that it participated in assessing and rating Swiss timepiece movements for accuracy. As marine navigation adopted the usage of mechanical timepieces for navigational aid, the accuracy of such timepieces became more critical. From this need developed an accuracy testing regime involving various astronomical observatories. In Europe, the Neuchatel Observatory, Geneva Observatory, Besancon Observatory and Kew Observatory were examples of prominent observatories that tested timepiece movements for accuracy. The testing process lasted for many days, typically 45 days. Each movement was tested in 5 positions and 2 temperatures, in 10 series of 4 or 5 days each. The tolerances for error were much finer than any other standard, including the modern COSC standard. Movements that passed the stringent tests were issued a certification from the observatory called a Bulletin de Marche, signed by the Directeur of the Observatory. The Bulletin de Marche stated the testing criteria, and the actual performance of the movement. A movement with a Bulletin de Marche from an observatory became known as an Observatory Chronometer, and such were issued a chronometer reference number by the Observatory.The role of the observatories in assessing the accuracy of mechanical timepieces was instrumental in driving the mechanical watchmaking industry toward higher and higher levels of accuracy. As a result, today high quality mechanical watch movements have an extremely high degree of accuracy. However, no mechanical movement could ultimately compare to the accuracy of the quartz movements being developed. Accordingly, such chronometer certification ceased in the late 1960s and early 1970s with the advent of the quartz watch movement.".
- Neuchâtel_Observatory wikiPageExternalLink obs-ntl.
- Neuchâtel_Observatory wikiPageExternalLink Activities.html?StyleType=marron&CatId=2891&DocId=4170.
- Neuchâtel_Observatory wikiPageID "2967379".
- Neuchâtel_Observatory wikiPageLength "3604".
- Neuchâtel_Observatory wikiPageOutDegree "19".
- Neuchâtel_Observatory wikiPageRevisionID "611596789".
- Neuchâtel_Observatory wikiPageWikiLink Amateur_astronomy.
- Neuchâtel_Observatory wikiPageWikiLink Astronomy.
- Neuchâtel_Observatory wikiPageWikiLink Atomic_clock.
- Neuchâtel_Observatory wikiPageWikiLink Besançon_Astronomical_Observatory.
- Neuchâtel_Observatory wikiPageWikiLink COSC.
- Neuchâtel_Observatory wikiPageWikiLink Canton_of_Neuchâtel.
- Neuchâtel_Observatory wikiPageWikiLink Category:Astronomical_observatories_in_Switzerland.
- Neuchâtel_Observatory wikiPageWikiLink Chronometry.
- Neuchâtel_Observatory wikiPageWikiLink Europe.
- Neuchâtel_Observatory wikiPageWikiLink Geneva_Observatory.
- Neuchâtel_Observatory wikiPageWikiLink Kings_Observatory.
- Neuchâtel_Observatory wikiPageWikiLink Neuchâtel.
- Neuchâtel_Observatory wikiPageWikiLink Observatory.
- Neuchâtel_Observatory wikiPageWikiLink Observatory_chronometer.
- Neuchâtel_Observatory wikiPageWikiLink Second.
- Neuchâtel_Observatory wikiPageWikiLink Switzerland.
- Neuchâtel_Observatory wikiPageWikiLink Transit_instrument.
- Neuchâtel_Observatory wikiPageWikiLinkText "Astronomical Observatory de Neuchatel".
- Neuchâtel_Observatory wikiPageWikiLinkText "Bulletin de Observation De Neuchâtel".
- Neuchâtel_Observatory wikiPageWikiLinkText "Canton Observatory, Neuchâtel".
- Neuchâtel_Observatory wikiPageWikiLinkText "Neuchâtel Observatories".
- Neuchâtel_Observatory wikiPageWikiLinkText "Neuchâtel Observatory".
- Neuchâtel_Observatory code "19".
- Neuchâtel_Observatory established "1858".
- Neuchâtel_Observatory location Canton_of_Neuchâtel.
- Neuchâtel_Observatory location Neuchâtel.
- Neuchâtel_Observatory location Switzerland.
- Neuchâtel_Observatory name "Neuchâtel Observatory".
- Neuchâtel_Observatory website obs-ntl.
- Neuchâtel_Observatory wikiPageUsesTemplate Template:Coord.
- Neuchâtel_Observatory wikiPageUsesTemplate Template:Infobox_Observatory.
- Neuchâtel_Observatory wikiPageUsesTemplate Template:Observatory-stub.
- Neuchâtel_Observatory wikiPageUsesTemplate Template:Switzerland-struct-stub.
- Neuchâtel_Observatory subject Category:Astronomical_observatories_in_Switzerland.
- Neuchâtel_Observatory hypernym Observatory.
- Neuchâtel_Observatory point "47.0 6.9529".
- Neuchâtel_Observatory type Place.
- Neuchâtel_Observatory type Diacritic.
- Neuchâtel_Observatory type Redirect.
- Neuchâtel_Observatory type SpatialThing.
- Neuchâtel_Observatory comment "The Observatoire Cantonal de Neuchâtel (Neuchâtel Observatory) is an astronomical observatory funded by the Public Economy Department of the Neuchâtel State (Switzerland) . It is located in Neuchâtel and was founded in 1858. Besides astronomical observations, the Neuchâtel observatory also works with atomic clocks. Before 1967, one second was defined by the rotation of the earth, and thus Neuchâtel observatory calibrated clocks via observations.".
- Neuchâtel_Observatory label "Neuchâtel Observatory".
- Neuchâtel_Observatory sameAs Q373174.
- Neuchâtel_Observatory sameAs Category:Observatoire_cantonal_de_Neuchâtel.
- Neuchâtel_Observatory sameAs Observatoire_Cantonal_de_Neuchâtel.
- Neuchâtel_Observatory sameAs Observatoire_cantonal_de_Neuchâtel.
- Neuchâtel_Observatory sameAs m.08gp2p.
- Neuchâtel_Observatory sameAs Невшательская_обсерватория.
- Neuchâtel_Observatory sameAs Q373174.
- Neuchâtel_Observatory lat "47.0".
- Neuchâtel_Observatory long "6.9529".
- Neuchâtel_Observatory wasDerivedFrom Neuchâtel_Observatory?oldid=611596789.
- Neuchâtel_Observatory homepage obs-ntl.
- Neuchâtel_Observatory isPrimaryTopicOf Neuchâtel_Observatory.