The third astrolabe catalogue at Valinhos

Details The third astrolabe catalogue at Valinhos The third astrolabe catalogue at Valinhos

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...77...67c&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 77, no. 1, Jan. 1989, p. 67-72. Research supported by CNPq,

Astronomy and Astrophysics

Astronomy

6

Astrolabes, Astronomical Catalogs, Sky Surveys (Astronomy), Stars, Astrometry, Error Analysis, Northern Sky

Scientific paper

Individual Delta alpha and Delta beta corrections have been obtained for 109 FK4 and FK4-Supplement stars, based on 45-deg zenith observations made with the Danjon astrolabe at Valinhos. The observations were made between December 1983 and December 1986, and they cover the declination zone of + 20 deg to -65 deg. The present results have been compared with data for the common stars of the First and Second Astrolabe Catalogues at Valinhos, which were based on 30-deg zenith observations.

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