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Solar Particle Telescopes

NSSDCA ID: 1969-046D-03

Mission Name: Vela 5A
Principal Investigator:Dr. Sidney Singer


The solar telescope experiment was designed to measure the energy spectrum and angular distribution of solar protons between 0.3 and 50 MeV, and of solar alpha particles between 2 and 100 MeV. In addition, the experiment was designed to identify and monitor the flux of deuterium, tritium, and helium-3 nuclei which may be emitted during a solar particle flare and to monitor the intensity of more heavily ionized particles. There were three telescopes in a single plane oriented at angles of 45 deg, 90 deg, and 135 deg relative to the spacecraft spin axis. Each instrument consisted of a collimating tube (providing an angular view of 30 deg) in front of a solid-state dE/dx vs E particle detector. The telescope data system failed on May 29, 1969.

Alternate Names

  • Vela5A/SolarParticleTelescopes


    Additional Information

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



    NameRoleOriginal AffiliationE-mail
    Dr. Michael D. MontgomeryOther InvestigatorLos Alamos National Laboratory
    Dr. Sidney SingerPrincipal InvestigatorLos Alamos National
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