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Very Long Baseline Interferometry (VLBI) Level 1A correlator (SWIN) output from NASA CDDIS

Published by CDDIS | National Aeronautics and Space Administration | Catalog Last Checked: June 25, 2026 at 01:51 PM | Dataset Last Updated: June 23, 2026
SWIN files contain the VLBI fringe visibilities of an observing session (24 hours long or 1 hour long). The files are created by the International VLBI Service for Geodesy and Astrometry (IVS) correlation centers and constitute the raw output of the Distributed FX-style (DiFX) software correlator running on a Swinburne supercomputer. These data form the basis for the fringe fitting process and can also be used to make source maps of the observed quasars.

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