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MAST Contacts for Help

The Archive Help Desk is available Monday through Friday, 9:00 AM to 5:00 PM Eastern to answer questions about the Archive.

For questions about HST data analysis, send e-mail to: For questions about JWST data analysis, visit

For assistance with the archive, or help with other missions (e.g., Kepler, FUSE, IUE, Copernicus EUVE, GALEX, etc.) send e-mail to: