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IMPERSONAL ASTROLABE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-10-11

English

Subject field(s)
  • Astronomy
CONT

Among [André-Louis Danjon] notable contributions to astronomy was the design of the impersonal(prismatic) astrolabe now known as the Danjon astrolabe, which led to an improvement in the accuracy of fundamental optical astrometry.

French

Domaine(s)
  • Astronomie
OBS

A. Danjon [...] a fait un instrument d'observation d'une extraordinaire précision, grâce auquel on peut étudier les variations de latitude et de longitude, et mettre en évidence le mouvement du pôle par rapport à la surface terrestre et au pôle moyen.

Spanish

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Record 2 2014-10-30

English

Subject field(s)
  • Astrophysics and Cosmography
CONT

... E. Esclangon and A. Danjon both became subsequently directors of Paris Observatory and remain known to history as inventors respectively of the "talking clock"(or "hone clock") and of an "impersonal astrolabe".

French

Domaine(s)
  • Astrophysique et cosmographie
CONT

Au XXe siècle, le nom d'astrolabe à prisme fut donné à des appareils destinés à déterminer des positions d'étoiles. Le plus connu a été l'astrolabe de Claude et Driencourt. Le principe a été repris par Danjon dans son astrolabe moderne. Utilisé par l'observatoire de Paris depuis 1952, cet instrument s'est révélé être un instrument précis et exempt d'erreurs subjectives d'observation (astrolabe impersonnel). On peut le considérer comme l'un des instruments fondamentaux de l'astronomie de position. Il sert à déterminer le temps et les variations de latitude.

CONT

Astrolabe impersonnel de Danjon : l'astrolabe à prisme sous sa forme moderne.

Spanish

Save record 2

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