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Long-Term Coudé Radial-Velocity Studies With a 1.2-m Telescope

Published online by Cambridge University Press:  12 April 2016

C.D. Scarfe
C.D. Scarfe*
Affiliation:
Department of Physics and Astronomy, University of Victoria, Victoria, B.C., V8W 3P6, Canada

Abstract

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I have used the 1.2-m telescope and coudé spectrograph of the Dominion Astrophysical Observatory for more than 30 years in a program of radial-velocity observations of binary stars. The program was begun with photographic plates as detectors, but for 20 years the primary detector has been the radial-velocity scanner, which cross-correlates stellar spectra with an artificial mask.

Since some of the binaries under observation have periods of several years, the instrument’s stability is an important consideration. I have therefore been obliged to observe standard stars and asteroids to check its performance. These observations are of relevance to efforts to improve the IAU standard star system.

I will describe the telescope, spectrograph and scanner, and will briefly discuss some of the results obtained for a selection of binary and multiple stars.

Type
VII. Science With Small Telescopes
Information
International Astronomical Union Colloquium , Volume 183: Small-Telescope Astronomy on Global Scales , 2001 , pp. 283 - 288
Copyright
Copyright © Astronomical Society of the Pacific 2001

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