CHARGE-COUPLED DEVICE SPECTRAL IMAGES OF SPATIALLY RESOLVED REGIONS OF JUPITER IN THE 6190-A AND 8900-A METHANE AND 6450-A AMMONIA BANDS DURING THE 1989 OPPOSITION

High-quality charge-coupled device spectroscopic observations at different regions of Jupiter in the spectral regions lambda-lambda-6000-6600 and 8700-9200 angstrom at a resolution of 1.2 angstrom have been obtained. These spectra allowed us to obtain the center-to-limb curves of the equivalent widths of the CH4 6190-angstrom band, the NH3 6450-angstrom band, and the band depth of the 8900-angstrom band, as well as their latitudinal distribution. Some asymmetries in the center-to-limb distribution of the equivalent widths of the CH4 6190-angstrom and NH3 6450-angstrom bands were detected, as well as a very prominent decrease toward the planetary limbs for the ammonia band. The latitudinal variations of the CH4 6190-angstrom and NH3 6450-angstrom equivalent widths were strongly correlated for fractional radii less than 0.4, with a maximum of absorption at the North Equatorial Belt. The South Equatorial Belt, undetectable at visible and near-infrared continuum wavelengths, was discernable at lambda = 8900 angstrom. Model computations for the Equatorial Region assuming three aerosol layer models gave some constraints on tropospheric atmospheric parameters during the 1989 Jupiter opposition date.