Installing CASA on Mac OS

Installation


CASA for Macintosh is distributed as self-contained Macintosh application. For installation purposes, this means that you can install CASA by simply dragging the application to your hard disk. It should be as easy as copying a file.
  1. Download the CASA disk image for your OS version from our download site
  2. Open the disk image file (if your browser does not do so automatically).
  3. Drag the CASA application to the Applications folder of your hard disk.
  4. Eject the CASA disk image.
  5. Double-click the CASA application to run it for the first time. If the OS does not allow you to install apps from non-Apple sources, please Change the settings in "System Preferences-> Security & Privacy -> General" and "Allow applications downloaded from: Mac App store and identified developers".
  6. (optional but recommended) You will be prompted to create the symbolic links to the CASA version (Administrator privileges are required). The symbolic links will allow you to run casapy, casaviewer, casaplotms, etc. from any terminal command line.

Multiple installations of CASA


If you want to have more than a single version of CASA in the Application folder, simply rename the CASA.app to some other name (e.g. CASA-version.app). When you double click on any available version, that specific one will be launched. And if you accept to recreate the symbolic links, the casapy, casaviewer, casaplotms, etc. executables will be always pointing to the version that was double clicked on first. Switching CASA versions then comes down to double click the wanted Application and recreating symbolic links.

Startup


The pipeline will only appear when CASA is started via 
casapy --pipeline

Troubleshooting


If you see error messages about "dbus" and "launchctl", you may have to unload previous dbus sessions:

launchctl remove org.freedesktop.dbus-session
launchctl remove org.freedesktop.dbus-system

Versions after 12115 are 64bit only and will not work on older mac intel machines

Support


If you encounter difficulties, please see our list of known problems or consult the CASA helpdesk or ALMA helpdesk, where we maintain knowledgebase articles and where you can get in touch with us. You may also consult the NRAO Science Forums to discuss any CASA issues amongst CASA users.

If you want to be kept up to date about CASA, please subscribe to our CASA mailing lists.

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