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- Besançon_Astronomical_Observatory abstract "The Observatoire des sciences de l'Univers de Besançon (Observatoire de Besançon for short, Besançon Astronomical Observatory or Besançon Observatory in English) is an astronomical observatory owned and operated by the Centre national de la recherche scientifique (CNRS, National Center for Scientific Research). It is located in Besançon, France.In the past, the Besançon Observatory 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 Besançon 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 ISO 3159 chronometer standard that other testing bodies such as COSC use. 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.".
- Besançon_Astronomical_Observatory thumbnail Observatoire_de_Besançon.jpg?width=300.
- Besançon_Astronomical_Observatory wikiPageExternalLink www.obs-besancon.fr.
- Besançon_Astronomical_Observatory wikiPageExternalLink Welcome_ang.html.
- Besançon_Astronomical_Observatory wikiPageID "2957705".
- Besançon_Astronomical_Observatory wikiPageLength "3289".
- Besançon_Astronomical_Observatory wikiPageOutDegree "18".
- Besançon_Astronomical_Observatory wikiPageRevisionID "700710259".
- Besançon_Astronomical_Observatory wikiPageWikiLink Astronomy.
- Besançon_Astronomical_Observatory wikiPageWikiLink Besançon.
- Besançon_Astronomical_Observatory wikiPageWikiLink COSC.
- Besançon_Astronomical_Observatory wikiPageWikiLink Category:Astronomical_observatories_in_France.
- Besançon_Astronomical_Observatory wikiPageWikiLink Category:Buildings_and_structures_in_Besançon.
- Besançon_Astronomical_Observatory wikiPageWikiLink Category:Education_in_Besançon.
- Besançon_Astronomical_Observatory wikiPageWikiLink Centre_national_de_la_recherche_scientifique.
- Besançon_Astronomical_Observatory wikiPageWikiLink Europe.
- Besançon_Astronomical_Observatory wikiPageWikiLink France.
- Besançon_Astronomical_Observatory wikiPageWikiLink Geneva_Observatory.
- Besançon_Astronomical_Observatory wikiPageWikiLink Kings_Observatory.
- Besançon_Astronomical_Observatory wikiPageWikiLink Neuchâtel_Observatory.
- Besançon_Astronomical_Observatory wikiPageWikiLink Observatory.
- Besançon_Astronomical_Observatory wikiPageWikiLink Observatory_chronometer.
- Besançon_Astronomical_Observatory wikiPageWikiLink File:Observatoire_de_Besançon.jpg.
- Besançon_Astronomical_Observatory wikiPageWikiLinkText "Besançon Astronomical Observatory".
- Besançon_Astronomical_Observatory wikiPageWikiLinkText "Observatory at Besançon".
- Besançon_Astronomical_Observatory code "16".
- Besançon_Astronomical_Observatory location Besançon.
- Besançon_Astronomical_Observatory location France.
- Besançon_Astronomical_Observatory name "Besançon Astronomical Observatory".
- Besançon_Astronomical_Observatory organization Centre_national_de_la_recherche_scientifique.
- Besançon_Astronomical_Observatory website www.obs-besancon.fr.
- Besançon_Astronomical_Observatory wikiPageUsesTemplate Template:Coord.
- Besançon_Astronomical_Observatory wikiPageUsesTemplate Template:France-struct-stub.
- Besançon_Astronomical_Observatory wikiPageUsesTemplate Template:Infobox_Observatory.
- Besançon_Astronomical_Observatory wikiPageUsesTemplate Template:Observatory-stub.
- Besançon_Astronomical_Observatory subject Category:Astronomical_observatories_in_France.
- Besançon_Astronomical_Observatory subject Category:Buildings_and_structures_in_Besançon.
- Besançon_Astronomical_Observatory subject Category:Education_in_Besançon.
- Besançon_Astronomical_Observatory hypernym Observatory.
- Besançon_Astronomical_Observatory point "47.246944444444445 5.989722222222222".
- Besançon_Astronomical_Observatory type Place.
- Besançon_Astronomical_Observatory type Diacritic.
- Besançon_Astronomical_Observatory type Redirect.
- Besançon_Astronomical_Observatory type SpatialThing.
- Besançon_Astronomical_Observatory comment "The Observatoire des sciences de l'Univers de Besançon (Observatoire de Besançon for short, Besançon Astronomical Observatory or Besançon Observatory in English) is an astronomical observatory owned and operated by the Centre national de la recherche scientifique (CNRS, National Center for Scientific Research). It is located in Besançon, France.In the past, the Besançon Observatory participated in assessing and rating Swiss timepiece movements for accuracy.".
- Besançon_Astronomical_Observatory label "Besançon Astronomical Observatory".
- Besançon_Astronomical_Observatory sameAs Q844282.
- Besançon_Astronomical_Observatory sameAs Category:Observatory_of_Besançon.
- Besançon_Astronomical_Observatory sameAs Observatoire_de_Besançon.
- Besançon_Astronomical_Observatory sameAs Observatorio_Astronómico_de_Besançon.
- Besançon_Astronomical_Observatory sameAs Observatoire_de_Besançon.
- Besançon_Astronomical_Observatory sameAs m.08g34c.
- Besançon_Astronomical_Observatory sameAs Безансонская_обсерватория.
- Besançon_Astronomical_Observatory sameAs Q844282.
- Besançon_Astronomical_Observatory lat "47.246944444444445".
- Besançon_Astronomical_Observatory long "5.989722222222222".
- Besançon_Astronomical_Observatory wasDerivedFrom Besançon_Astronomical_Observatory?oldid=700710259.
- Besançon_Astronomical_Observatory depiction Observatoire_de_Besançon.jpg.
- Besançon_Astronomical_Observatory homepage www.obs-besancon.fr.
- Besançon_Astronomical_Observatory isPrimaryTopicOf Besançon_Astronomical_Observatory.