NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header

Microwave Radiometer (failed)

Mission Name: Mariner 1
Principal Investigator: Dr. Douglas E. Jones


A microwave radiometer mounted of the hexagonal base of the spacecraft was designed to obtain data on the radiation from Venus. The instrument comprised a 50.8-cm-diameter parabolic antenna with two reference horns, pointed 60 deg away from its most sensitive axis, mounted on it. The parabolic antenna was intended to collect radiation from the planet, and the horns intended to collect radiation from space. The difference in signal strengths was to yield the true magnitude of radiation from the planet. Instrument calibration was to be performed automatically during flight. A motor-driven antenna was included to make vertical 120-deg arc scans at 0.1 deg per sec when the spacecraft reached Venus. Lateral scanning was to be performed by the spacecraft trajectory. Measurement was intended to be made for 30 min from approximately 35,000 km above the surface of Venus. The spacecraft was destroyed 290 sec after lift off because of deviation from the planned flight path.


    Additional Information

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



    NameRoleOriginal AffiliationE-mail
    Dr. Douglas E. JonesPrincipal InvestigatorBrigham Young University 
    [] NASA Logo -