CASA Documentation Homepage

CASA Docs is the official documentation for the CASA software. A new version of CASA Docs is released with every version of CASA...

CASA, the Common Astronomy Software Applications package, is the primary data processing software for the Atacama Large Millimeter/submillimeter Array (ALMA) and the Karl G. Jansky Very Large Array (VLA), and has a versatility that also benefits the reduction and analysis of data from other radio telescopes. The CASA package can be used for processing both interferometric and single dish data, and it supports the ALMA, VLA and VLA Sky Survey (VLASS) data-processing pipelines.

The CASA infrastructure is built on top of CASAcore, and consists of a suite of tools that are implemented in C++ and bundled together under an Interactive Python interface as data reduction 'tasks'. This structure provides flexibility to process the data via task interface or as a python script. In addition to the data reduction tasks, many post-processing tools are available for even more flexibility and special purpose reduction needs. 

CASA is developed by an international consortium of scientists based at the National Radio Astronomical Observatory (NRAO), the European Southern Observatory (ESO), the National Astronomical Observatory of Japan (NAOJ), the Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), CSIRO Astronomy and Space Science (CSIRO/CASS), and the Netherlands Institute for Radio Astronomy (ASTRON), under the guidance of NRAO.