Changes in the Cloud Belts of Jupiter, 1630-1664, as reported in the 1665 Astronomia Reformata of Giovanni Battista Riccioli

TL;DR

This paper analyzes historical observations of Jupiter's cloud belts from 1630 to 1664, based on Riccioli's 1665 report, highlighting changes in the planet's appearance over time.

Contribution

It provides a detailed translation and analysis of Riccioli's account, offering insights into early telescopic observations of Jupiter's atmospheric features.

Findings

Documented variations in Jupiter's cloud belts over 34 years.

Correlated observed changes with early telescopic capabilities.

Contributed to historical understanding of planetary observation methods.

Abstract

A translation of a section from the 1665 Astronomia Reformata of G. B. Riccioli discussing the appearance of the disk of Jupiter during the years 1630-1664; changes in the Jovian cloud belts as recorded by a variety of observers are a major feature of Riccioli's discussion.