CCD astrometry and instrumental Delta-V photometry of wide visual double stars. III - Differential measurements of often observed southern pairs

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astronomical Photometry, Double Stars, Stellar Magnitude, Astrometry, Instrument Errors, Space Observations (From Earth)

Scientific paper

We present accurate relative positions and instrumental visual (Bessel V) magnitude differences of southern wide star components. The mean accuracy of the angular separation is 0.02 arcsecs, which corresponds to 1.5 micron on the CCD chip, and of magnitude difference 0.007 mag/exposure. The program pairs are targets of the HIPPARCOS mission and they have been observed at least four times in the last 150 yrs.

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