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Additional info for An introduction to the study of stellar structure
4. Nevertheless, the ﬁrst point of Aries continues to have special meaning Sec. 4. A ﬁgure of an armillary sphere, from Lorenz Fries’ 1522 edition of Ptolemy’s Geographia. 9 cm (page size). Note the central Earth and the projections of its great circles into the sky. See text for details. 10 What is a star map? [Ch. 1 for astrologers. In fact, the great north-to-south circle that goes through the two equinoctial points has a special signiﬁcance and appears on some star charts as the ‘‘Equinoctial Colure’’.
Frontispiece from the Valk and Schenk edition of Cellarius’ Harmonia Macrocosmica . . . . . . . . . . . . . . . . . . . . . . Frontispiece from the 1742 edition of Doppelmayr’s Atlas Coelestis. . . Title page from the 1647 Leiden edition of Sacrobosco’s De Sphaera . . Frontispiece from Todd’s 1899 revised edition of Steele’s Popular Astronomy Frontispiece and title page from Mitchel’s The Astronomy of the Bible . . Frontispiece from Snell’s 1876 revised edition of Olmsted’s An Introduction to Astronomy: Designed as a Text-book for the Use of Students in College .
A single-gore engraving for a 107 cm celestial globe, from the 1693 edition of Coronelli’s Libro dei Globi . . . . . . . . . . . . . . . . . An insert containing the movable parts of a volvelle, from the 1647 Leiden edition of Sacrobosco’s De Sphaera. . . . . . . . . . . . . . A beautifully colored volvelle from the 1584 edition of Peter Apian’s Cosmographia . . . . . . . . . . . . . . .