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This astrolabe, an astronomical instrument, from the sixteenth century is inscribed in Hebrew characters.
In reference to the deceased’s name, the central verse fragment on this monument reads “And Mordechai came before the king . . .” (Esther 8:1), and the top panel contains a low relief of a richly clad…
This diagram of the cosmos is from a treatise on astronomy, Sefer mareh ha-ofanim (The Appearance of the Heavenly Beings), by Solomon ben Abraham Avigdor. The treatise was mostly a translation of…
This illustration of an armillary sphere is from a treatise on astronomy, Sefer mareh ha-ofanim (The Appearance of the Heavenly Beings), by Solomon ben Abraham Avigdor. The treatise was mostly a…
In the back of a manuscript collection of astronomical texts, which includes one of Abraham Ibn Ezra’s works on the use of the astrolabe (a tool for astronomical calculations), is a set of crude but…
This illustration of the (Aristotelian) cosmos appears in an eighteenth-century manuscript of Neḥmad ve-na‘im (Nice and Pleasant), David Ganz’s posthumously published book on astronomy.
