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arXiv · 1801.04772

Ten years of speckle interferometry at SOAR

Andrei Tokovinin
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Abstract

Since 2007, close binary and multiple stars are observed by speckle interferometry at the 4.1 m Southern Astrophysical Research (SOAR) telescope. The HRCam instrument, observing strategy and planning, data processing and calibration methods, developed and improved during ten years, are presented here in a concise way. Thousands of binary stars were measured with diffraction-limited resolution (29mas at 540nm wavelength) and a high accuracy reaching 1mas; two hundred new pairs or subsystems were discovered. To date, HRCam has performed over 11000 observations with a high efficiency (up to 300 stars per night). An overview of the main results delivered by this instrument is given.

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Andrei Tokovinin. 2018-01-15. Ten years of speckle interferometry at SOAR. https://doi.org/10.1088/1538-3873%2Faaa7d9

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