ABSOLUTELY CALIBRATED CCD IMAGES OF SATURN AT METHANE BAND AND CONTINUUM WAVELENGTHS DURING ITS 1991 OPPOSITION

DOI: 
10.1029/92JE02780
Publication date: 
25/02/1993
Main author: 
ORTIZ, JL
IAA authors: 
ORTIZ, JL
Authors: 
ORTIZ, JL; MORENO, F; MOLINA, A
Journal: 
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
Publication type: 
Article
Volume: 
98
Pages: 
3053-3063
Number: 
Abstract: 
Ground-based charge-coupled device images of Saturn were obtained at the Cassegrain focus of the 1.52-m telescope at the Calar Alto Observatory (Andalucia, Spain) during the 1991 opposition. The images were obtained in and out of the absorption methane bands at 6190, 7250, and 8900 angstrom under very good seeing conditions. A Bayesian deconvolution technique was employed in the restoration procedure. The derived absolute reflectivities and band depths at some locations of the disk are provided in tables appropriate for analysis in terms of scattering models. Possible temporal variations between the reflectivities found here and those reported by West et al. (1982) are discussed. No longitudinal variations in reflectivity larger than a 4% level were found. Some images showed bright spot activity at the equatorial region.
Database: 
WOK
Keywords: