Systematic differences Astrolabe-FK5 in the declination range -5 deg to -60 deg

Details Systematic differences Astrolabe-FK5 in the declination range -5 deg to -60 deg Systematic differences Astrolabe-FK5 in the declination range -5 deg to -60 deg

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...232..267n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 232, no. 1, June 1990, p. 267-269. Research supported by the Fondo Nacional de

Astronomy and Astrophysics

Astrophysics

8

Astrolabes, Astronomical Catalogs, Declination, Error Analysis, Reference Systems

Scientific paper

Systematic differences Astrolabe-Catalogue (1976.5) of type Delta Alpha(delta) and Delta delta(delta), obtained at Santiago for the FK5 and FK4 systems, are given for the zone between -5 to -60 deg in declination. The mean absolute difference in right ascension is 0.010s for the FK4 and 0.006s for the FK5. In declination this difference is the same for both catalogues: 0.03 arcsec. The standard deviations of the systematic differences are in right ascension + or - 0.0035s for the FK4 and + or - 0.0016s for the FK5, and in declination + or - 0.048 arcsec for FK4 and + or - 0.026 arcsec for the FK5.

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