Abstract The link between the optical and VLBI extragalactic reference frames is undertaken with a long-term program of differential VLBI astrometric observations of 12 radio stars. The status of the program and an assessment of the astrometric accuracy of these observations are presented.
VLBI astrometry and the Hipparcos link to the extragalactic reference frame
Advances in Space Research ; 11 , 2 ; 129-132
01.01.1991
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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