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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 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.".
- Besançon_Astronomical_Observatory thumbnail Observatoire_de_Besançon.jpg?width=300.
- Besançon_Astronomical_Observatory wikiPageID "2957705".
- Besançon_Astronomical_Observatory wikiPageRevisionID "569352287".
- 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 subject Category:Astronomical_observatories_in_France.
- Besançon_Astronomical_Observatory subject Category:Buildings_and_structures_in_Besançon.
- Besançon_Astronomical_Observatory subject Category:Education_in_Franche-Comté.
- Besançon_Astronomical_Observatory point "47.246944444444445 5.989722222222222".
- 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 label "Observatoire de Besançon".
- Besançon_Astronomical_Observatory label "Observatoire de Besançon".
- Besançon_Astronomical_Observatory label "Безансонская обсерватория".
- Besançon_Astronomical_Observatory sameAs Besan%C3%A7on_Astronomical_Observatory.
- Besançon_Astronomical_Observatory sameAs Observatoire_de_Besançon.
- Besançon_Astronomical_Observatory sameAs Observatoire_de_Besançon.
- Besançon_Astronomical_Observatory sameAs Q844282.
- 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=569352287.
- Besançon_Astronomical_Observatory depiction Observatoire_de_Besançon.jpg.
- Besançon_Astronomical_Observatory homepage www.obs-besancon.fr.