Absolute Quadrant Determinations from Speckle Observations of Binary Stars

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 high...

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Bibliographic Details
Published in:International Astronomical Union Colloquium 1992, Vol.135, p.536-536
Main Authors: Bagnuolo, W.G., Mason, B.D., Barry, D.J., Hartkopf, W.I., McAlister, H.A.
Format: Article
Language:English
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Summary: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.
ISSN:0252-9211
DOI:10.1017/S0252921100007065