HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Satellite Observations of Intensity Variations of the Zodiacal Light

Abstract : OBSERVATIONS of the intensity of the zodiacal light at 6530 Å have been made with a photometer on board the satellite D2A ‘Tournesol’. This satellite was launched on April 15, 1971, from Kourou (French Guiana) into an orbit of inclination 46° with a perigee of 456 km and an apogee of 700 km. The spin axis was oriented towards the Sun with an accuracy of ∼15 arc min and a spin period of 60 s (Fig. 1). The line of sight of the photometer is perpendicular to the spin axis and therefore scans the celestial sphere in a plane orthogonal to the ecliptic plane and to the direction of the Sun. Observations in a plane perpendicular to the Earth-Sun line (that is, at elongation ε=90° or ε=−90°) were carried out during the night phase, when the solar depression angle was >25° and the altitude of the lowest observed points was >135 km. Because of this, the signal contained no contribution from the night-glow, but was only due to zodiacal light and starlight. The data cover, without interruption, the period from April 19, 1971, to June 1973.
Complete list of metadata

Contributor : Catherine Cardon Connect in order to contact the contributor
Submitted on : Tuesday, February 22, 2022 - 8:17:37 PM
Last modification on : Friday, May 6, 2022 - 2:54:41 PM

Links full text



Anny Chantal Levasseur, Jacques-Emile Blamont. Satellite Observations of Intensity Variations of the Zodiacal Light. Nature, Nature Publishing Group, 1973, 246 (5427), pp.26-28. ⟨10.1038/246026a0⟩. ⟨insu-03585082⟩



Record views