Using speckle interferometry to resolve binary stars

Details Using speckle interferometry to resolve binary stars Using speckle interferometry to resolve binary stars

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..318...25k&link_type=abstract

In Spectroscopically and Spatially Resolving the Components of the Close Binary Stars, Proceedings of the Workshop held 20-24 Oc

Astronomy and Astrophysics

Astronomy

Scientific paper

Speckle interferometry has proven to be a powerful tool to detect sub-arcsecond binaries and measure their parameters. However, due to the sophisticated methods required to reduce the data, not very many astronomers know how to use it. In this contribution, I describe the basic methods used to reconstruct modulus and phase of the Fourier transformed high-resolution image from speckle data. I will also show some example data of binary stars, and demonstrate why the simple structure of the Fourier transform of binary star images makes them ideal targets for speckle-interferometry, allowing to detect binaries with separations at and sometimes even below the diffraction limit of the telescope.

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