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Magnetic Survey using Two Magnetometers

NSSDCA ID: 1964-054A-02

Mission Name: OGO 1
Principal Investigator:Dr. James P. Heppner


OGO 1 was equipped with a three-axis, dual range, fluxgate magnetometer for measuring vector fields up to 30 and 500 nT full-scale, and a four-cell rubidium vapor magnetometer for measuring scalar fields of 3 to 14,000 nT with programmed bias fields incorporated for vector measurements in weak fields. The instrument was intended to measure magnetospheric, transition region, and interplanetary magnetic fields. The sensors were to be located on 6.7-m booms. At launch two booms failed to deploy, and as a result the spacecraft went into an uncontrolled spin. The rubidium vapor magnetometer was left in a high-gradient field where it could not operate, and the fluxgate magnetometer was left in a position where spacecraft fields limited its accuracy to about 3 nT. In the 1-kbs mode, each fluxgate was sampled 1.7 times per second and 8 and 64 times faster in the other modes. Data from this experiment are held by the PI.

Alternate Names

  • OGO1/MagneticSurveyusingTwoMagnetometers

Funding Agency

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


  • Space Physics: Magnetospheric Studies
  • Space Physics: Heliospheric Studies

Additional Information

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



NameRoleOriginal AffiliationE-mail
Dr. Brian G. LedleyOther InvestigatorNASA Goddard Space Flight Center
Mr. Thomas L. SkillmanOther InvestigatorNASA Goddard Space Flight Center
Dr. Masahisa SugiuraOther InvestigatorNASA Goddard Space Flight
Dr. R. M. CampbellOther InvestigatorNASA Goddard Space Flight Center
Dr. James P. HeppnerPrincipal InvestigatorNASA Goddard Space Flight Center
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