This is the home for MAST Data Holdings. These collected documents will introduce you to the data hosted in MAST, and describe major data collections in detail. These documents are in large part drawn from older documentation, but have been reorganized, collected here, and updated. The content features a new look-and-feel, and makes it easier to navigate and search for critical information on: the substantial MAST holdings; interfaces for searching, browsing, and retrieving data; and for seeking help when you need it.

Related MAST documentation is still being migrated from the old platform, and will appear here when ready. In the meantime, links to older content will be included where necessary.

The available documents now include the following; they are also listed in the navigation panel on the left-hand side of these pages.

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Send comments & corrections on this MAST document to: archive@stsci.edu.