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Service Outage

On Saturday, July 27, from 11:00 to 21:00 UTC (7 am to 5 pm US Eastern Time), all MAST services will be unavailable due to maintenance.

MAST Web Tutorial


The MAST Web Tutorial has become out-of-date and is temporarily offline until updates can be completed. Questions about the MAST web site can be sent to the help desk via e-mail at archive@stsci.edu or call 410-338-4443.

We apologize for the inconvenience.