Sep 5, 2014: CASA 4.2.2 is now available.

Obtaining the CASA Release

Supported Operating Systems

The latest CASA release 4.2.2 is available for the following operating systems:

  • Linux
    • RedHat 5.7 and 6.4 (64-bit)
  • Mac OS
    • Mac OS 10.8 (Mountain Lion; 64-bit)
CASA may also work on other flavors of Linux. The list above covers those operating systems that we run regular tests on. Running CASA 4.2.2 on Mac 10.9 is considered experimental. Due to unforeseen hardware failures we also cannot offer CASA 4.2.2 for Mac OS 10.7 anymore, please use CASA 4.2.1 if you still have such an OS or upgrade to Mac OS 10.8.


Please follow these links for downloading the code for your specific operating system and for the installation instructions.
We also provide links to intermediate, Stable versions, which pave the way for the next, following release. They have additional functionality over the current release but Stables are not as rigorously tested as the release and they likely contain developments that are not yet complete. All available documentation is only for the release, so Stable may behave somewhat differently than what is currently documented.

The latest CASA release is 4.2.2


      Linux 64bit (r30986): Download
      • CASA release (955MB) Instructions
      • ALMA pipeline version (958MB) Instructions
      • CASA 4.3-prerelease Linux 64bit RedHat 5 (1 Dec 2014, 959MB) Instructions
      • CASA 4.3-prerelease Linux 64bit RedHat 6 (30 Nov 2014, r31734) Download    Instructions
      • Older Releases for Linux: Archive

Mac OS

      Mac OS 10.8 (Mountain Lion - 64bit, r30986): Download
      • CASA release (413MB) Instructions
      • ALMA pipeline version (416MB) Instructions
      • CASA 4.3 prerelease13 Mac OS 10.8 (5 Dec 2014, r31817, 422MB) Instructions
      • Older Releases for Mac OS: 10.5   10.6   10.7   10.8


      • CASA User Reference & Cookbook (current release): Download (pdf)
      • Source Code: Source Code Notes

If you need additional help, please consult our NRAO helpdesk or ALMA helpdesk
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