The Helios zodiacal light experiment (E9).
Abstract
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.
- Publication:
-
Raumfahrtforschung
- Pub Date:
- October 1975
- Bibcode:
- 1975RF.....19..264L
- Keywords:
-
- Helios Satellites;
- Optical Measurement;
- Photometers;
- Satellite-Borne Instruments;
- Zodiacal Light;
- Electro-Optics;
- Electronic Control;
- Luminous Intensity;
- Optical Polarization;
- Ubv Spectra;
- Instrumentation and Photography