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Radio Astronomy

NSSDCA ID: 1964-054A-09

Mission Name: OGO 1
Principal Investigator:Prof. Fred T. Haddock


This experiment was designed to measure the dynamic radio spectrum of solar radio noise bursts by observing frequency drift rate, frequency bandwidth, duration of fast-drift solar bursts, cosmic noise intensity, ionospheric electron densities (50 to 500 electrons/cc), atmospherics, auroral noise from the earth to satellite, and radio noise generated in the terrestrial ionosphere and in interplanetary plasmas. The experiment was also capable of observing radio bursts from the planet Jupiter. The instrumentation consisted of a 9-m monopole antenna and a sweep frequency superheterodyne receiver. The receiver had automatic repetitive tuning from 2 to 4 MHz with a 2-s sweep period. Automatic amplitude and frequency calibration was provided by a crystal calibrator that provided controlled amplitude pulses at 500-kHz intervals across the 2- to 4-MHz band. The antenna was a rolled beryllium copper strip that extended to about 9 m in a 1.27-cm tubular configuration. It was stored in a flat shape on a drum prior to the flight and was supposed to be deployed by a shunt-wound motor upon ground command after launch. However, problems were experienced with the deployment of the antenna, and, although a number of attempts were made, no indications of full deployment were ever received. Even though the antenna did not fully deploy, data were obtained because the experiment was not affected by the spin of OGO 1. The data, however, were of little value because of the antenna problem and the high-noise environment. Data from this experiment no longer exist. More details regarding experiment design may be found in Haddock, F. T., and R. G. Peltzer, "Instrumentation for radio astronomy measurements aboard the OGO-1 and OGO-3 spacecraft. Part 2: Technical," Final Report, University of Michigan, Ann Arbor, December 31, 1969 (TRF B16030).

Alternate Names

  • OGO1/RadioAstronomy

Facts in Brief

Mass: 2.04 kg
Power (avg): 1.7 W

Funding Agency

  • Unknown (United States)


  • Astronomy: Radio

Additional Information

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



NameRoleOriginal AffiliationE-mail
Prof. Fred T. HaddockPrincipal InvestigatorUniversity of Michigan
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