Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

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

    Metadata Updated: January 15, 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.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date April 11, 2025
    Metadata Updated Date January 15, 2026

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 11, 2025
    Metadata Updated Date January 15, 2026
    Publisher CDDIS
    Maintainer
    Identifier 10.5067/VLBI/vlbi_l1a_swin_001
    Data Last Modified 2026-01-13
    Category Earth Science
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 159e3a17-082b-48fe-bc60-6adff8a70c35
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/VLBI/vlbi_l1a_swin_001
    Old Spatial {"NorthBoundingCoordinate":90,"SouthBoundingCoordinate":-90,"EastBoundingCoordinate":180,"WestBoundingCoordinate":-180},"CARTESIAN"
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 9feba0a81e4bf4066c963154a26af792ba6ba9b8b1e0d038c85997944c9109be
    Source Schema Version 1.1
    Spatial
    Temporal 2021-01-01/2021-01-01

    Didn't find what you're looking for? Suggest a dataset here.