Improving the S/X Celestial Reference Frame in the South: A Status Update
SCHARTNER, M
Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] [ETH Zürich]
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Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] [ETH Zürich]
Language
en
Communication dans un congrès
This item was published in
25th Working Meeting of the European VLBI Group for Geodesy and Astrometry (EVGA), 2021-03-15, Cyberspace.
English Abstract
Catalogs of positions of compact extragalactic radio sources, including the ICRF-3, are generally weaker in the south by factors of 2 or more in both density and precision. In 2018 we started a campaign to improve the S/X ...Read more >
Catalogs of positions of compact extragalactic radio sources, including the ICRF-3, are generally weaker in the south by factors of 2 or more in both density and precision. In 2018 we started a campaign to improve the S/X celestial reference frame in the South by upgrading existing IVS astrometric observing programmes. Our efforts were mainly focused on the Celestial Reference Frame (CRF) and Celestial Reference Frame Deep South (CRDS) sessions, which are dedicated astrometric observing programmes of sources at mid-and southern declinations. In particular, the data rate of the CRF and CRDSRead less <
English Keywords
Astrometry
VLBI
Celestial Reference Frame
Southern Hemisphere
quasars
Origin
Hal imported