Data Archive and Distribution

All output from the VLBA is maintained in the NRAO data archive.  The user(s) who proposed the observations retains a proprietary right to the data for an interval of 12 months following the end of correlation of the last observations requested in the original proposal, or a direct extension of that proposal.  Thereafter, the archived data are available to any person on request.  Data can be obtained from the archive either as multiple correlator output files, or as large FITS files with default calibrations attached.

Although the online archive is the preferred distribution path, VLBA data can also be written onto DDS-3 or -4 DAT cassettes and mailed. Initial distribution to the proposing user occurs automatically, soon after correlation is complete.

Distributed data conform to the FITS Interferometry Data Interchange Convention (Greisen 2009), which is read by AIPS task FITLD.

Connect with NRAO

The National Radio Astronomy Observatory and Green Bank Observatory are facilities of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.

Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.

The National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."

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