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Speckle interferometric observations of close binary stars

S. K. Saha·V. Chinnappan·L. Yeswanth·P. Anbazhagan
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Abstract

Speckle interferometric technique is employed to record a series of hundreds of short-exposure images of several close binary stars with sub-arcsecond separation through a narrow band filter at the Cassegrain focus of the 2.34 meter (m) Vainu Bappu telescope (VBT), situated at Vainu Bappu Observatory (VBO), Kavalur, India. The data are recorded sequentially by a Peltier-cooled intensified CCD camera with 10 ms exposure. The auto-correlation method is applied to determine the angular separations and position angles of these binary systems.

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S. K. Saha, V. Chinnappan, L. Yeswanth, P. Anbazhagan. 2002-09-20. Speckle interferometric observations of close binary stars. https://arxiv.org/abs/astro-ph/0209424

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