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Extended downtime notice
Starting at noon US Eastern (1600 UTC) Friday, April 12th through Sunday, April 14th access to this site will be unavailable due to a planned outage. We apologize for any inconvenience.
Acknowledgments
MAST made extensive use of the XMM-Newton web sites at HEASARC and VILSPA.
All the catalog information and data sets available from MAST were provided
by the HEASARC Guest Observer Facility.
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