The Borghesi Astronomical Clock in the Museum of History and Technology Contributions from the Museum of History and Technology, Paper 35

The description follows the fascinating journey of an 18th‑century marvel: a massive astronomical clock that combines precise timekeeping with celestial mapping. Drawing on original documents, it paints a vivid picture of the era’s scientific ambition and the cultural climate that welcomed such a complex instrument. Listeners are introduced to the clock’s striking dial, which simultaneously displays the hour, the position of the sun, moon, and major stars.

Central to the tale are Father Francesco Borghesi, a learned priest with a passion for the heavens, and Bartolomeo Antonio Bertolla, a skilled provincial clockmaker who turned Borghesi’s sketches into a functioning masterpiece. Their collaboration reveals the painstaking design process, the inventive mechanisms that drive the celestial displays, and the interplay between theory and craftsmanship. The narrative balances technical detail with human curiosity, showing how a shared vision made the impossible tangible.

Beyond the clock itself, the work explores the broader world of scientific instrumentation in the Enlightenment, highlighting how museums preserve and interpret these achievements today. It offers a clear, scholarly yet accessible look at the marriage of art, engineering, and astronomy, making the past feel alive for any listener interested in the heritage of time and the stars.