2025RNAAS...9..203K

We present visible wavelength observations of Saturn's rings conducted using 1.6 m ground-based telescope. The goal is to assess long-term compositional changes in the rings by comparing spectral characteristics with data acquired by the Cassini spacecraft. Reflectance spectra from 450 to 900 nm were obtained during four nights in 2021 and 2022. Spectral slopes, sensitive to water ice purity, were derived for two wavelength ranges: 450-550 and 550-900 nm. Our measured slopes agree well with values previously reported from Cassini's VIMS data, suggesting minimal compositional change over the past decade. In addition, no clear correlation is found between spectral slope and the orbital position of Enceladus. These results support the reliability of visible-wavelength ground-based monitoring as a complementary tool to past spacecraft observations.