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arXiv · 1811.00813

Speckle Interferometry at the U.S. Naval Observatory. XXIII

Brian D. Mason·William I. Hartkopf·Sean E. Urban·Jordan D. Josties
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Abstract

The results of 3,989 intensified CCD observations of double stars, made with the 26-inch refractor of the U.S. Naval Observatory, are presented. Each observation of a system represents a combination of over two thousand short-exposure images. These observations are averaged into 1,911 mean relative positions and range in separation from 0.289 to 128.638, with a median separation of 8.669. Four orbits are improved. This is the 23rd in this series of papers and covers the period 4 January 2017 through 13 September 2017.

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Brian D. Mason, William I. Hartkopf, Sean E. Urban, Jordan D. Josties. 2018-11-02. Speckle Interferometry at the U.S. Naval Observatory. XXIII. https://doi.org/10.3847/1538-3881%2Faae484

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