NSSDCA ID: 1962-041A-01
Mission Name: Mariner 2The microwave radiometer, mounted on the hexagonal base of the spacecraft, was used to obtain data on the radiation from Venus. The instrument consisted of a 50.8 cm diameter parabolic antenna upon which were also mounted two reference horns pointing 60 degrees away from its most sensitive axis. The parabolic antenna collected radiation from the planet and the two horns collected radiation from space. The difference in signal strengths between space and Venus yielded the true magnitude of radiation from the planet. Instrument calibration was performed automatically during flight. Upon Venus encounter, the motor-driven antenna made vertical 120 degree-arc scans at 0.1 degree/s. Lateral scanning was due to the spacecraft trajectory. Measurements were made for the 30 minute period around closest approach to Venus.
Mass: 9.94 kg
Power (avg): 4 W
Questions and comments about this experiment can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. A. Edward Lilley | Co-Investigator | Harvard College Observatory | |
Prof. Alan H. Barrett | Co-Investigator | Massachusetts Institute of Technology | |
Dr. Douglas E. Jones | General Contact | Brigham Young University | |
Dr. Douglas E. Jones | Principal Investigator | Brigham Young University |