Correlated flux densities from VLBI observations with the DSN

Details Correlated flux densities from VLBI observations with the DSN Correlated flux densities from VLBI observations with the DSN

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992tdapr.111..118c&link_type=abstract

In its The Telecommunications and Data Acquisition p 118-128 (SEE N93-18897 06-32)

Astronomy and Astrophysics

Astronomy

Astronomical Catalogs, Deep Space Network, Extragalactic Radio Sources, Flux Density, Galileo Spacecraft, Mars Observer, Very Long Base Interferometry, Broadband, Coordinates, Data Acquisition, Superhigh Frequencies, Ultrahigh Frequencies

Scientific paper

Correlated flux densities of extragalactic radio sources in the very long baseline interferometry (VLBI) astrometric catalog are required for the VLBI tracking of Galileo, Mars Observer, and future missions. A system to produce correlated and total flux density catalogs was developed to meet these requirements. A correlated flux density catalog of 274 sources, accurate to about 20 percent, was derived from more than 5000 DSN VLBI observations at 2.3 GHz (S-band) and 8.4 GHz (X-band) using 43 VLBI radio reference frame experiments during the period 1989-1992. Various consistency checks were carried out to ensure the accuracy of the correlated flux densities. All observations were made on the California-Spain and California-Australia DSN baselines using the Mark 3 wideband data acquisition system. A total flux density catalog, accurate to about 20 percent, with data on 150 sources, was also created. Together, these catalogs can be used to predict source strengths to assist in the scheduling of VLBI tracking passes. In addition, for those sources with sufficient observations, a rough estimate of source structure parameters can be made.

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