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Published August 1, 1965 | Published
Journal Article Open

Thermal infrared emission of the Jovian disk


The 8–14 micron infrared emission of Jupiter has been observed on six nights in December 1963 using the 200-inch Hale telescope. The new observations possess twice the resolution of those obtained in 1962. The brightness temperature at the center of the disk appears to be nearly constant at 129°K. With some slight ambiguity, the light bands are about 0.5° cooler in appearance than the dark bands. There is some suggestion of morning-evening asymmetry in one of the bands. The Great Red Spot is found to be from 1.5° to 2.0° cooler than the surrounding disk at the newer resolution.

Additional Information

Copyright 1965 by the American Geophysical Union. (Manuscript received April 23, 1965.) It is a pleasure to thank Mr. P. R. Glaser, Jupiter recorder of the Association of Lunar and Planetary Observers, for making available his compilation of drawings and photographs; thanks are due Mr. Dragesco, for the use of his excellent drawing. Financial support has been made available through grant NsG 56-60 of the National Aeronautics and Space Administration. Contribution 1327 of the Division of the Geological Sciences, California Institute of Technology, Pasadena.

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