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The Discovery of Double Stars at Occultations

Published online by Cambridge University Press:  12 April 2016

David S. Evans
David S. Evans*
Affiliation:
Department of Astronomy, University of Texas at Austin and McDonald Observatory

Extract

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When systematic photoelectric observations of occultations were started some dozen years ago it was realised that they yielded a significant crop of double star discoveries and observations. The limitations of the method were well recognised: only about ten percent of the area of the sky would ever be available and one could not choose which stars to be observed. Moreover the data obtained from a successful observation of a double star are less comprehensive than the normal visual observation. The result is the vector separation or the true separation projected along a line perpendicular to the actual lunar limb, that is the position angle of the point of occultation modified by the slope of the limb at that point.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 62: Current Techniques in Double and Multiple Star Research , May 1983 , pp. 63 - 72
Copyright
Copyright © Lowell Observatory 1983

References

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Evans, David S., and Fekel, Francis C. Jr. (1979) Astrophys. J. 228, 497.Google Scholar
Evans, David S. and Edwards, David A., (1980) “Observatory”, 100, 206.Google Scholar
Wayman, P. A., Symms, L.S.T., and Blackwell, K. C. (1965) Roy Obs. Bull. No. 98.Google Scholar