THE RECONCILIATION of OPTICAL and RADIO REFERENCE FRAMES


      S.P. Pouliaev (*)
      Pulkovo Observatory, St.Petersburg, Russia

      A.H. Andrei
      Observatorio Nacional,  Rio de Janeiro,  Brazil

 
      ABSTRACT

      We present a selected list of radio positions of stars, with 
the aim to contribute for the reconciliation of the optical and radio
reference frames. The positions are analyzed from the point of view 
of the radio facility, where they have been obtained. There is a total 
of 65 stars, being 6 from the IRAM interferometer, 3 from the Hat Creek 
interferometer, 33 from the VLA operating in the continuum mode, 15 from 
VLA line mode observations and 8 obtained by VLBI. The radio positions 
are compared against the CAMC optical system. The analysis shows agreement 
between the radio results from the different facilities, accounting for 
the different error thresholds. The connection between the optical and 
the radio stars' secondary reference frames is discussed.


   (*) On leave at Observatorio Nacional, Brazil