Data Processing

by Stephan W. Witz last modified Jul 06, 2012 by Stephan Witz

The primary data reduction package for the VLA is the CASA (Common Astronomy Software Applications) package, which is also used for ALMA. See for more information on the latest release.

NRAO will continue to support AIPS (Astronomical Image Processing System) for the foreseeable future, at least until VLBI functionality has been incorporated into CASA. See for more details.

It is possible to reduce data obtained through the Open Shared Risk Observing programs during semesters 2010A through 2012B  using either CASA or AIPS.  More complex correlator set-ups are generally better handled by CASA, and advanced imaging algorithms are available in CASA.  The VLA data reduction pipeline will use CASA.