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Amelioration des Calculs de Reduction des Observations a l'Astrolabe. Application a la Determination des Termes de 18.6 et 9.3 Ans de la Nutation

Published online by Cambridge University Press:  14 August 2015

Fernand Chollet
Fernand Chollet*
Affiliation:
Observatoire de Paris

Abstract

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Astrolabe observations made at Paris have been analysed to obtain more reliable values of the constants of nutation. A new method of reduction which takes account of variations in the zenith distance of the observations gave values for the 18.6 year and 9.3 year terms which are almost the same as those derived by classical methods, but for the annual and semi-annual terms the results are different. It is proposed to apply the new method to other series of observations.

Type
Part II: Polar Motion
Information
Symposium - International Astronomical Union , Volume 82: Time and the Earth's Rotation , 1979 , pp. 129 - 134
Copyright
Copyright © Reidel 1979 

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