Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977icar...30..730t&link_type=abstract
Icarus, vol. 30, Apr. 1977, p. 730-735.
Astronomy and Astrophysics
Astronomy
1
Astronomical Photography, Infrared Astronomy, Jupiter (Planet), Jupiter Atmosphere, Infrared Imagery, Jupiter Red Spot, Planetary Temperature, Raster Scanning
Scientific paper
High-spatial-resolution images of Jupiter were produced on the Hale 200-in. telescope. A programmable wobbling secondary was used to raster-scan the planet with 64 by 64 1-arcsec pixels. Images were made with broadband (8-14 microns) and several 1- and 2-micron-wide filters. All images reveal a belt-and-ozone structure similar to visible photographs. Belts in the broadband data appear to be about 2 K hotter than zones, but contrast varies markedly in different parts of the 8-14-micron spectral region. The lowest belt-zone contrast is found in the hydrogen-opacity-dominated region at 12.5 microns, while images at 9.5 microns exhibit the greatest contrast. Isolated areas are observed to be as much as 4 K hotter than surrounding areas at 9.5 microns. This large contrast is probably due to variations in the distribution of the ammonia clouds in the upper atmosphere.
Terrile Richard J.
Westphal Andrew J.
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