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Absolute Quadrant Determinations from Speckle Observations of Binary Stars

Published online by Cambridge University Press:  12 April 2016

W.G. Bagnuolo ,
B.D. Mason ,
D.J. Barry ,
W.I. Hartkopf  and
H.A. McAlister
W.G. Bagnuolo
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
B.D. Mason
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
D.J. Barry
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
W.I. Hartkopf
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
H.A. McAlister
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA

Abstract

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Reduction of speckle data obtained for binary stars is typically carried out using power spectrum or, equivalently, autocorrelation methods. An especially powerful algorithm from which accuate differential astronomy can be obtained is the vector autocorrelation technique. While such methods are highly suited to extracting astrometric information from very large volumes of speckle data in near real–time, they inherently introduce a 180° ambiguity in position angle measurement. We briefly summarize results with a new algorithm which maintains most of the simplicity of vector autocorrelation while removing the quadrant ambiguity.

Type
High Resolution At Visual Wavelengths
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 536
Copyright
Copyright © Astronomical Society of the Pacific 1992

References

Bagnuolo, W.G. Jr., Barry, D.J., Mason, B.D., & Dombrowski, E.G. 1990, Proceedings of the SPIE on Amplitude and Spatial Interferometry, Breckinridge, J., ed., 1237, 286 CrossRefGoogle Scholar
Bagnuolo, W.G. Jr., Mason, B.D., Barry, D.J., Hartkopf, W.I., & McAlister, H.A. 1992, AJ, 103, 1399 Google Scholar
Mason, B.D., McAlister, H.A., Hartkopf, W.I., & Bagnuolo, W.G. Jr. 1992, AJ, submittedGoogle Scholar