CASA, the Common Astronomy Software Applications for Radio Astronomy

2022/11/01 by The CASA Team, Ben Bean, S. Bhatnagar +67 · 1,071 citations
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy #Astrophysics and Cosmic Phenomena #Computer science #Galaxy #Geography #Jansky #Observatory #Operating system #Physics #Radio Astronomy Observations and Technology #Radio astronomy #Radio galaxy #Radio telescope #Remote sensing #Software #Telescope #Very-long-baseline interferometry

paper · pdf · doi:10.1088/1538-3873/ac9642

published in Publications of the Astronomical Society of the Pacific 134(1041), 114501 (Institute of Physics)

openalex publication_date 2022/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Abstract 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. The CASA software can handle data from single-dish, aperture-synthesis, and Very Long Baseline Interferometery (VLBI) telescopes. One of its core functionalities is to support the calibration and imaging pipelines for ALMA, VLA, VLA Sky Survey, and the Nobeyama 45 m telescope. This paper presents a high-level overview of the basic structure of the CASA software, as well as procedures for calibrating and imaging astronomical radio data in CASA. CASA is being developed by an international consortium of scientists and software engineers based at the National Radio Astronomy Observatory (NRAO), the European Southern Observatory, the National Astronomical Observatory of Japan, and the Joint Institute for VLBI European Research Infrastructure Consortium (JIV-ERIC), under the guidance of NRAO.

Citations

• A relational model of data for large shared data banks

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