.. _desktop_download:

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.

   .. image:: images/archive/1_firefox_browse_archive.png

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.

   .. image:: images/archive/2_select_data.png

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

   .. image:: images/archive/3_download_data1.png

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

   .. image:: images/archive/4_download_data2.png

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

   .. image:: images/archive/5_download_data3.png

Save this file to your desktop session.

   .. image:: images/archive/6_download_data4.png

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.

   .. image:: images/archive/7_download_data5.png

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.

   .. image:: images/archive/8_download_data6.png

.. _desktop_run_download_script:

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

   .. image:: images/archive/9_download_data7.png

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

   .. image:: images/archive/10_download_data8.png

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