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Systematic Errors in Double Star Observations

Published online by Cambridge University Press:  12 April 2016

Geoffrey G. Douglass  and
Charles E. Worley
Geoffrey G. Douglass
Affiliation:
U.S. Naval Observatory, Washington, DC 20392, USA
Charles E. Worley
Affiliation:
U.S. Naval Observatory, Washington, DC 20392, USA

Abstract

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We have examined the visual and speckle observations of visual double stars made by 31 experienced observers in order to evaluate possible systematic errors in these series. Using 57 “definitive” orbits, we find no appreciable errors in position angle. We do find systematic effects in separation for some observers, and, in particular, a “proximity” effect for measurements of pairs closer than 0″.5.

Root-mean-square residuals are:

Type
Classical Methods, Catalogs, & Databases
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 311 - 313
Copyright
Copyright © Astronomical Society of the Pacific 1992

References

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Worley, C.E. & Heintz, W.D. 1983, Fourth Catalog of Orbits of Visual Binary Stars, Publ. U.S. Naval Obs., XXIV, Pt. 7 Google Scholar
Worley, C.E. & Douglass, G.G. 1970, BAAS, 2, No. 2, 226 Google Scholar