Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aj....141..157m&link_type=abstract
The Astronomical Journal, Volume 141, Issue 5, article id. 157 (2011).
Astronomy and Astrophysics
Astronomy
2
Binaries: General, Binaries: Visual, Techniques: Interferometric
Scientific paper
The results of 1031 speckle-interferometric observations of double stars, made with the 26 inch refractor of the U.S. Naval Observatory, are presented. Each speckle-interferometric observation of a system represents a combination of over two thousand short-exposure images. These observations are averaged into 457 mean relative positions and range in separation from 0farcs15 to 16farcs94, with a median separation of 3farcs03. The range in V-band magnitudes for the primary (secondary) of observed targets is 3.1-12.9 (3.2-13.3). This is the sixteenth in a series of papers presenting measurements obtained with this system and covers the period 2009 January 12 through 2009 December 17. Included in these data are 12 older measurements whose positions were previously deemed possibly aberrant, but are no longer classified this way following a confirming observation. Also, 10 pairs with a single observation are herein confirmed. This paper also includes the first data obtained using a new ICCD with fiber optic cables.
Hartkopf William I.
Mason Brian D.
Wycoff Gary L.
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