Scanning the Skies: A Virtual Exhibit of Astronomy Manuscripts at the University of Pennsylvania
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Astronomical Anthology (Almagest, etc.)

Manuscript Item Type Metadata

Date

Circa 1361

Description

Attesting to the central role of Jewish astronomers in medieval Spain, this volume begins with a treatise on the calendar compiled in 1361 by Jacob ben David ben Yom Tov for Pedro IV of Aragon. It also contains four astrological treatises by the twelfth-century philosopher Abraham Ibn Ezra, including discussions of Indian, Persian, and Babylonian astronomy, and a Hebrew translation of Ptolemy’s Almagest with this remarkable constellation map in ink and gouache. Later folios bear illuminated polychrome constellation images and intricately ornamented tables.

Fewer than thirty-five astronomical maps are known to survive from the Middle Ages, and this example, which shows the northern and southern celestial hemispheres and may have been copied from a globe, offers an especially rare glimpse into medieval Jewish celestial cartography. As Elly Dekker has observed (Illustrating the Phaenomena 458-61), the depictions of certain constellations (e.g. Aquila upside down and standing on Sagitta) and the presence of the Coma Berenices asterism above Leo resemble Islamic maps, while the human figures are drawn in Western European styles.

Call Number

UPenn LJS 57

Pages Displayed

56v-57r

Video Orientation

LJS 57 Video Orientation

Full Digitization

LJS 57 on Penn in Hand

Author(s)

Jacob ben David ben Yom Tov, Abraham Ibn Ezra, Claudius Ptolemy

Place of Origin

Catalonia, Spain

Language(s)

Hebrew

Scribe(s)

Moshe (?)

Materials

Parchment

Number of Leaves

114

Dimensions

275 x 204 mm

Binding

Modern blind-stamped morocco with two clasps.

Provenance (Ownership History)

David Solomon Sassoon; Carl Alexander Floersheim Trust for Art and Judaica; Lawrence J. Schoenberg.

Further Reading

Crofton Black, ed., Transformation of Knowledge: Early Manuscripts from the Collection of Lawrence J. Schoenberg (London: Paul Holberton, 2006), 66; Elly Dekker, Illustrating the Phaenomena: Celestial Cartography in Antiquity and the Middle Ages (Oxford: Oxford University Press, 2013), 458-61; Thomas F. Glick, “Science in Medieval Spain: The Jewish Contribution in the Context of Convivencia,” Convivencia: Jews, Muslims, and Christians in Medieval Spain, eds. Mann, Glick, and Dodds (New York: G. Braziller, 1992), 86.

Collection

The Scholarly Tradition

Tags

Almagest, Astrology, Constellations, Tables

Citation

“Astronomical Anthology (Almagest, etc.),” Scanning the Skies: A Virtual Exhibit of Astronomy Manuscripts at the University of Pennsylvania, accessed July 1, 2025, https://aylinmalcolm.com/astro/items/show/6.

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