Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26as...59..449t&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 59, March 1985, p. 449-454.
Astronomy and Astrophysics
Astrophysics
5
Astrometry, Double Stars, Southern Sky, Stellar Motions, Visual Observation, Astronomical Coordinates, Micrometers
Scientific paper
A double-star observing program is described which has been started at Cordoba with a 30 cm refractor. Usually neglected Index Catalog of Visual Double Stars (IDS) pairs south of -60 deg are selected for observation, most of them having been measured only one or two times previously. A total of 174 micrometric observations of 78 wide pairs are presented together with a few measurements of 9 double stars not found in the IDS. Also reported is a list of 135 additional measurements of 26 test stars. By comparison with all earlier observations, an estimate for the personal equation has been made, which is applied in combination with catalogue proper motions to investigate the nature of many of these pairs.
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