Abstract
Compact components of several radio sources were observed in the course of VLBI observations at S-band between NASA-JPL Deep Space Stations located in Australia, South Africa and California, U.S.A., during the southern summer of 1971–72. These stations were equipped with H-maser frequency standards over this period so that the fringe frequency could be determined to better than 1 mHz.
The internal consistency of the position solution could be assessed for sources observed at least three times. This varied with source declination from ± 0″.1 at a declination of 45° to ± 2″.0 near the equator.
The spread in the position solution for P0727-11, a rapid variable at the observing frequency, was also large.
Positions obtained for some other sources have been used to assist in the identification of associated optical objects.
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Gubbay, J.S., Legg, A.J., Robertson, D.S. (1974). Position Solution of Compact Radio Sources Using Long Coherence VLBI. In: Gliese, W., Murray, C.A., Tucker, R.H. (eds) New Problems in Astrometry. International Astronomical Union / Union Astronomique Internationale, vol 61. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2199-9_24
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DOI: https://doi.org/10.1007/978-94-010-2199-9_24
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