This article examines the use of astronomical observations of the austral sky in treatises written by Italian astrologers during the sixteenth century. The references made to navigators’ accounts and diagrams of southern stars in the works of Agostino Nifo, Girolamo Cardano, Francesco Giuntini and Francesco Pifferi show their attempts to include previously unknown stars in Ptolemaic framing. Although this approach implies the defence of traditional astrology by recognising the need to broaden its contents, none of the authors studied here put forward an astrological interpretation of the new information available.

中文翻译：

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十六世纪意大利占星家的南方天空与托勒密传统的革新

本文考察了 16 世纪意大利占星家撰写的论文中对南方天空的天文观测的使用。在 Agostino Nifo、Girolamo Cardano、Francesco Giuntini 和 Francesco Pifferi 的作品中引用了航海家的记述和南方恒星图，表明他们试图将以前不为人知的恒星纳入托勒密框架。虽然这种方法意味着通过承认需要扩大其内容来捍卫传统占星术，但这里研究的作者都没有对可用的新信息提出占星学解释。