Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001evga.conf..187m&link_type=abstract
Proceedings of the 15th Workshop Meeting on European VLBI for Geodesy and Astrometry. Institut d'Estudis Espacials de Catalunya,
Astronomy and Astrophysics
Astronomy
2
Scientific paper
The ICRF is the current defining celestial reference frame and is a catalog of positions of extragalactic objects measured with VLBI. It was derived in 1995 and came into effect on 1 January 1998. Since then two additional catalogs have been produced. ICRF-Ext.1 includes additional data through April 1999 with 59 new sources. The VLBA Calibrator Survey, carried out 1994-1997, has an additional catalog of 1298 dual-frequency and 34 X-band only positions. Because of the atypical observing profile, the analysis of the VLBA survey was different from ICRF and ICRF-Ext.1, and unique systematic errors may be present. Observing and analysis activities to support the extension and refinement of the ICRF are continuing.
No associations
LandOfFree
Extension of the ICRF does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Extension of the ICRF, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extension of the ICRF will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1103202