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The Diffuse X-ray Spectrometer (DXS) was a single experiment shuttle payload designed to fly on multiple missions. The primary objective of the DXS payload was to obtain measurements on the diffuse soft X-ray background radiation in the Milky Way Galaxy. DXS flew as a shuttle cargo bay attached payload using the Hitchhiker avionics and Shuttle Payload of Opportunity Carrier (SPOC) hardware, which provided support systems for power, command, and telemetry to the DXS instruments. DXS was first flown on the STS 54 mission. See the experiment description for details on the science objectives and instruments utilized.

Alternate Names

  • Diffuse X-Ray Spectrometer

Facts in Brief

Launch Date: 1993-01-13
Launch Vehicle: Shuttle
Launch Site: Cape Canaveral, United States
Mass: 1115 kg
Nominal Power: 900 W

Funding Agency

  • NASA-Office of Space Science Applications (United States)


  • Astronomy

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Mr. David B. JarrettProgram ManagerNASA
Mr. S. Chris DunkerMission ManagerNASA Goddard Space Flight
Dr. Francis E. MarshallMission ScientistNASA Goddard Space Flight
Dr. Louis J. KaluzienskiProgram ScientistNASA Headquarters

Related Information/Data at NSSDCA

STS 54

US Active Archive for DXS Information/Data

The DXS Archive at HEASARC

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