This menu bar selects certain types of products based on classification as defined by the Archive or mission pipelines. Examples are 'CALIBRATED', 'UNCALIBRATED', and 'REFERENCE'. Each option can be toggled on or off, displaying all products under that type to be displayed in the overlay. The products still need to be selected using the checkboxes next to each Observation or product displayed in the overlay. As products are selected, the Observation count, file count, and total estimated download volume is updated at the top of the overlay.

This video clip demonstrates how to choose products to display in the overlay based on the product extension.

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 Displaying Different Product Extensions

The 'Product Extensions' drop-down is used to display products based on the product extension. Note that this is not the same thing as a file extension. For example, if a files ends in '_drz.fits', the product extension is 'drz' while the file extension is 'fits'.

The string search box in the Download Overlay can be used to match product names, instruments, and filters/gratings. This can be used to further refine the displayed list of products for easy selection to download. For example, the search box can be used to display only "txt" files by entering ".txt" into the search box, which will only display products that include the string. These can then be selected using the selection checkboxes to include in the download.

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 How To Select Products Using The Checkboxes

Any products displayed in the overlay must be selected using the checkboxes to download them. 'Select All' and 'Select None' will select or deselect all currently displayed products. The selection checkbox next to a given Observation ID  will select or deselect all displayed products only for that Observation. The selection checkbox next to a displayed product  will select or deselect that only that product.

When ready to download the selected products, click the 'START DOWNLOAD' button. This will begin downloading the products by streaming them to a zip file. Note that the download location is set by the preference settings of the web browser, and will be downloaded to the same location other files are downloaded by the browser.

Pressing the 'DOWNLOAD WITH API QUERY' button will display the overlay below.

Another option to download products is to request a download script using the Mission Search API. Clicking on the 'DOWNLOAD WITH API QUERY' button will bring up the Download By API Query Overlay. This overlay displays API commands based on the products you have selected to download the files one at a time. These commands can be copied from the overlay into a text editor and then run as an executable script.

Such API download scripts can be useful in a number of scenarios where a search was conducted but it is desired to download the products at a later time. Examples include slow internet connections, not being at the machine where the files ultimately want to be stored on, or very large product requests where the products can be requested in smaller batches at different times.

Example of non-public products in the Download Overlay if not accessible by you, or if not signed in. Instead of a selection checkbox a locked icon will appear indicating permission is not granted to download those products.

Some missions, such as HST, have products that are not publicly available to everyone. These non-public (or "exclusive access") products will appear in the download overlay, but will not be available to select for download unless you are signed in to your STScI account and are authorized to retrieve those products.