EDP Sciences
Free access
Volume 366, Number 3, February II 2001
Page(s) 868 - 872
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20000298

A&A 366, 868-872 (2001)
DOI: 10.1051/0004-6361:20000298

Binary star speckle measurements at Calar Alto. I.

J. A. Docobo1, V. S. Tamazian1, Yu. Yu. Balega2, J. Blanco1, A. F. Maximov2 and V. A. Vasyuk2

1  Astronomical Observatory Ramon Maria Aller, University of Santiago de Compostela. PO Box 197, Santiago de Compostela, Spain
2  Special Astrophysical Observatory, Zelenchuk region, 369167, Russia

(Received 24 May 2000 / Accepted 14 November 2000 )

We present the first results of our speckle interferometric measurements of binary stars made with the ICCD speckle camera using the 1.52-m telescope of the Observatorio Astronomico Nacional at Calar Alto (Spain) in September, 1999. The data contain 123 observations of 83 systems. The measured angular separations range from $0\hbox{$.\!\!^{\prime\prime}$ }153$ to $6\hbox{$.\!\!^{\prime\prime}$ }727$. We have used there new speckle measurements to improve the orbital elements for the binaries COU 247 and BU 524 AB.

Key words: binaries: visual -- interferometry

Offprint request: J. A. Docobo

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