Global and regional astrometric comparison between two dense VLBI extragalactic reference frames

Details Global and regional astrometric comparison between two dense VLBI extragalactic reference frames Global and regional astrometric comparison between two dense VLBI extragalactic reference frames

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...248..297a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 248, no. 1, Aug. 1991, p. 297-300.

Astronomy and Astrophysics

Astrophysics

Celestial Reference Systems, Extragalactic Radio Sources, Very Long Base Interferometry, Astrometry, Misalignment

Scientific paper

Two dense extragalactic reference frames produced with independent data and analysis are compared. The relative orientations between the directions of the axes of the two frames are determined, as are possible regional deformations between them after removing the relative global rotations. The two extragalactic celestial reference frames have their directions of axes consistent within 0.0015 arcsec; systematic regional position biases are found that do not exceed 0.002 arcsec. Possible causes for these regional inconsistencies are suggested.

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