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A listing and discussion are given of balloon, rocket, satellite, and space probe observations of the zodiacal light. The paucity of space observations in several critical areas (e.g., in the ultraviolet and near the sun) is noted and suggestions are made for experiments to meet these needs.
Sky maps made by the Pioneer 10 Imaging Photopolarimeter (IPP) at sun-spacecraft distances from 1 to 3 AU have been analyzed to derive the brightness of the zodiacal light near the ecliptic at elongations greater than 90 degrees.The change in zodiacal light brightness with heliocentric distance is compared with models of the spatial distribution of the dust. Use of background starlight brightnesses...
Star counts in the sky region observed by Pioneer 10 at 4.64 AU from the sun, where the contribution of zodiacal light is negligible, were made using the Palomar Sky Survey Atlas. Brightness of the integrated starlight derived from our star counts agrees, in general, with the Pioneer 10's observation.
A source for some of the discrepancies among reported zodiacal light measurements is suggested, and a plea is made for more uniformity in the choice of units used to report zodiacal light results.
A brief description is given of the Skylab ten color photoelectric photometer and the programs of measurements made during Skylab missions SL-2 and SL-3. Results obtained on the polarized brightness of zodiacal light at five points on the antisolar hemisphere are discussed and compared with other published data for the north celestial pole, south ecliptic pole, at elongation 90 degrees on the ecliptic,...
Observations of the F-corona have been made in the 10 u region of the infrared during the eclipse of June 30, 1973. Use of the supersonic aircraft “Concorde 001” permitted 74 min of observation during totality and greatly reduced problems due to sky noise. The plane of the ecliptic was scanned over heliocentric distances of from 3 to 19 solar radii off the east limb. Bright features previously observed...
The OSO-6 Zodiacal Light experiment has provided evidence for the backscatter of light from the Earth-Moon libration regions at 5000 A. Additional measured data at 4000 A and 6100 A show similar characteristics. The combined three-color data lead to libration region color indices slightly bluer than the average surrounding sky background. The differential b-v for the L4 region is approximately -0...
The french astronomical satellite D2B is to be launched on September 1975. During the dial of the orbit, one axis of the satellite points to the Sun, with an accuracy of ± 30 arcmin; during the night of the orbit, the satellite keeps this stabilization by gyroscopic effect. The perpendicular axes -one of them is the optical axis of the Z.L. (Zodiacal Light) instrument- roll around the Earth-Sun direction,...
The French astronomical satellite D2B is to be launched on September 7975.The spin axis is constantly oriented towatds the sun with an accuracy of ± 30 arc min. The ERC experiment (field recognition) will provide images in three spectral intervals of a region centered at the anti-sun point and having a diameter of 10°. The scanning of this ugion is realized by a combination of the spin motion of the...
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