Speckle Interferometry of Southern Double Stars. II. Measures from the CASLEO 2.15 Meter Telescope, 1995-1996

Details Speckle Interferometry of Southern Double Stars. II. Measures from the CASLEO 2.15 Meter Telescope, 1995-1996 Speckle Interferometry of Southern Double Stars. II. Measures from the CASLEO 2.15 Meter Telescope, 1995-1996

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aj....121.1597h&link_type=abstract

The Astronomical Journal, Volume 121, Issue 3, pp. 1597-1606.

Astronomy and Astrophysics

Astronomy

7

Astrometry, Stars: Binaries: Close, Stars: Binaries: Visual, Techniques: Interferometric

Scientific paper

Relative astrometry is presented for 198 observations of 160 double stars. The data were obtained at the 2.15 m telescope at the Complejo Astronómico El Leoncito (Argentina) with a multianode microchannel array (MAMA) detector system. Five high-quality nondetections are also reported. When judged against ephemeris positions for binaries with very well determined orbits, the separation residuals exhibit a root mean square deviation of 13.2+3.4-1.9 mas and the position angle residuals exhibit rms deviation of 2.9d+0.8d-0.5d. Factors affecting the measurement precision are discussed.

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