Astrometry with VSOP

Details Astrometry with VSOP Astrometry with VSOP

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..402..486r&link_type=abstract

Approaching Micro-Arcsecond Resolution with VSOP-2: Astrophysics and Technologies ASP Conference Series, Vol. 402, proceedings o

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

Phase referencing has proved to be a useful technique for astronomical ground-based VLBI. We successfully carried out Space--VLBI phase referencing observations for the first time, using VSOP at 5 and 1.6 GHz, and we report here the astrometric results. We also made a direct measure of the orbit uncertainties. In addition we present a new calibration method for mm--VLBI astrometry, source/frequency phase referencing, valid under a wider variety of conditions than conventional phase referencing. Its requirements are compatible with the VSOP-2 mission specifications and would expand its capabilities.

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