Refinement of linking optical/radio reference frames on the basis of positional observations conducted in Ukraine, China and Russia.

Details Refinement of linking optical/radio reference frames on the basis of positional observations conducted in Ukraine, China and Russia. Refinement of linking optical/radio reference frames on the basis of positional observations conducted in Ukraine, China and Russia.

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000kfnts...3...59p&link_type=abstract

Kinematika i Fizika Nebesnykh Tel, Suppl, no. 3, p. 59-63

Physics

Scientific paper

Preliminary results of cooperative programme for refinement of linking optical/radio reference frames are discussed. The instrumentation, methods of observations and reductions as well as preliminary results are presented. Optical positions of several extragalactic radio sources (ERS) are determined by using the CCD telescopes of China, Russia and Ukraine. The catalogue, which consists of 14000 stars selected from the USNO--A2.0 in the fields around 200 ERS is used as reference one. The positions of stars in this catalogue were obtained from observations with Mykolaiv Axial meridian circle (AMC) for declination zone from equator to +70o in the 11-14.5 magnitude range made during 1996--1998. It is estimated that an expected accuracy of the optical/radio linking in case of using about 200 ERS for northern declination zone is on the level of 5 mas provided the uncertainties ERS optical positions are not worse than 20 mas.

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