Log in

Data Processing

NRAO and international partners develop and support a suite of open-source software packages for the calibration, imaging, analysis, and visualization of radio astronomical data.

CASA	CASA, the Common Astronomy Software Applications, is the primary data processing software for the Atacama Large Millimeter/submillimeter Array (ALMA) and the Karl G. Jansky Very Large Array (VLA), and is frequently used also for other radio telescopes. CASA can handle single-dish, interferometric, and Very Long Baseline Interferometery (VLBI) data. CASA is also the data processing software used by the pipelines for ALMA, VLA, VLASS, and Nobeyama.
CARTA	CARTA is the Cube Analysis and Rendering Tool for Astronomy, an image visualization and analysis tool designed for the ALMA, the VLA, and the SKA pathfinders.
Single Dish	The NRAO Greenbank Observatory offers various software packages for the processing and analysis of single dish data.
AIPS	AIPS, the Astronomical Image Processing System, is an alternative to CASA for the processing and imaging of interferometric data.
Obit	Obit is a group of legacy software packages for handling radio astronomy data, intended primarily as an environment in which new data processing algorithms can be developed and tested.

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

Founded in 1956, the NSF NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NSF NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NSF 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. NSF NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.