NEAR-INFRARED CVF SPECTROPHOTOMETRY OF SATURN IN 1992

Absolutely calibrated measurements of the reflectivity of Saturn in 1992 are presented. The observations were carried out using a Circular Variable Filter in combination with a photometer with a single element InSb detector at the 1.54 m Carlos Sanchez infrared telescope of the Observatorio del Teide in the Canary Islands (Spain). The spectral ranges covered were 1.4-2.4 mu m and 2.6-4.5 mu m. Besides the measurements at the disk, values of the reflectance of the Saturn's rings in the West Ansa were obtained. A comparison with the few related published works is made, and the significant spectral features in this wavelength region are discussed. A spectrum of Jupiter obtained in 1993 is also presented and compared with spectra obtained by us in 1991 using the same instrumental configuration.