Abstract
A programme of Talcott pairs has been compiled at Pulkovo in order to tie bright radio sources to the FK4 system. The programme includes FK4 stars and radio stars to mag 9 (Radio stars for astrometry, Abh. Hamb. Sternw., 1982). About 150 observations of 18 pairs were made during 1985-1989. The correction to the declination of a radio pair has been found as a difference between the “reference” latitude and the latitude derived from the observation of the radio pair. The value of the “reference” latitude was determined from observations of ordinary Talcott pairs. The standard deviation does not exceed 0.09 arcsec. A radio star can be tied to the FK4 with an accuracy not worse than 0.1 arcsec.
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