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La Mesure Des Vitesses Radiales Avec Un Prisme Objectif Associe A Un Telescope De Schmidt

Published online by Cambridge University Press:  12 April 2016

Ch. Fehrenbach  and
R. Burnage
Ch. Fehrenbach
Affiliation:
Observatoire de Haute Provence
R. Burnage
Affiliation:
Observatoire de Haute Provence

Abstract

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Radial velocity measurements with an objective-prism mounted on a Schmidt telescope.

A 62 cm diameter objective-prism is mounted on the CNRS-University of Liège Schmidt telescope at the Haute Provence Observatory. The field is 4 x 4° and the limiting magnitude is 12.5 on IllaJ hyper-sensitised plates. The dispersion is 200 A mm-1 at 4220 A. The plates are measured with a special machine and data are reduced by means of a computer with a correlation method. Stars of all spectral types are measured. The probable error is of some 4 km sec -1 over a mean of at least 3 plates. Already several lists of radial velocities of stars belonging to field situated at -30° of galactic latitude have been published. We have also started radial velocity observations for the Hipparcos Program.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 78: Astronomy with Schmidt-type telescopes , 1984 , pp. 291 - 294
Copyright
Copyright © Reidel 1984

References

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