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Double Star Measurement with the Cerga Two Telescope Interferometer

Published online by Cambridge University Press:  12 April 2016

L. Koechlin ,
F. Vakili  and
D. Bonneau
L. Koechlin
Affiliation:
CERGA Observatoire de Calern, F06460 St. Vallier de Thiey, France
F. Vakili
Affiliation:
CERGA Observatoire de Calern, F06460 St. Vallier de Thiey, France
D. Bonneau
Affiliation:
CERGA Observatoire de Calern, F06460 St. Vallier de Thiey, France

Abstract

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The CERGA interferometer is made of two 25 cm aperture telescopes with a variable north-south baseline, spanning from 5.5 to 35 meters. In addition to stellar diameters, it has provided binary stars measurements with a 0.5 milliarcsecs precision for separation down to 2.5 milliarcsoconds (Labeyrie 1971).

The visual limiting magnitude is presently 3.5. Large separation binaries will be observed with one milliarcsecond precision using a slightly different technique. This should provide a mean of detecting possible planetary induced orbital perturbations.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 62: Current Techniques in Double and Multiple Star Research , May 1983 , pp. 156
Copyright
Copyright © Lowell Observatory 1983

References

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