The Helios zodiacal light experiment /E 9/

Details The Helios zodiacal light experiment /E 9/ The Helios zodiacal light experiment /E 9/

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975rf.....19..264l&link_type=abstract

Raumfahrtforschung, vol. 19, Sept.-Oct. 1975, p. 264-267. Bundesministerium für Forschung und Technologie

Physics

Optics

29

Helios Satellites, Optical Measurement, Photometers, Satellite-Borne Instruments, Zodiacal Light, Electro-Optics, Electronic Control, Luminous Intensity, Optical Polarization, Ubv Spectra

Scientific paper

Experiment 9 of the German-American solar probe Helios is described. It consists of 3 photometers to measure the zodiacal light at ecliptical latitudes of -15, -30 and -90 deg (south pole of ecliptic). Intensity and polarization of zodiacal light is measured in three wavelength bands corresponding to the international UBV-System. Measures of stray light reduction are discussed and optical and mechanical parameters are given. Pulse counting technique is used and data handling within the experiment is described. The stability of the sensors during the first 130 days of the mission is discussed.

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