Download data from the ALMA archive (web browser)

Downloading data directly from an ALMA archive web query is quite straightforward. Double-click on the Firefox icon on the desktop, and navigate to the ALMA archive.

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You can use the filters to help identify the data you are interested in. For more information on using the archive query effectively, see this instructional video: https://almascience.nrao.edu/alma-data/archive/archive-video-tutorials

Select the dataset(s) of interest by ticking the box(es) to the left of each project.

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On the upper right panel, click the downward-pointing arrow, then click the green ‘Explore and download’ button that pops up.

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In the next window that pops up, select the files that you are interested in and click ‘Download Selected’.

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In the pop up window that next appears, click the ‘Download Script’ button.

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Save this file to your desktop session.

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To locate the file, click the downward-pointing arrow in the top left of the firefox browser, and then double-click the folder icon in the right of the window that pops up.

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This will open the File Manager in the directory where your ALMA data download script has been saved. The default is usually under Downloads/ within your home directory.

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Open a terminal (double-click the terminal icon), go to the Downloads directory, and run the data download script.

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When all of the files have been downloaded, you should see a query about un-tarring (uncompressing) them. Click ‘y’ for yes.

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You can now open a CASA terminal to begin your data reduction or analysis.