Year/Century: 16th century
Language: Latin
Subject: Illustrated
Binding: Leather
Description: Original sheep, gold ornate spine with raised bands, red sprayed edges. Christophori Clavii Bambergensis e Societate Iesu ASTROLABIUM by Christopher Clavius Rome, Tipografia Gabiana for Bartolomeo Grassi ; 1593 4to: 6 1/2 x 8 3/4" [32]-759 [= 749]-[4] pages. This first edition of Clavius's seminal work on astrolabes features a woodcut of an astrolabe on the title page, numerous in-text diagrams, some full-page illustrations, and some dampstaining on a few pages. It also includes tables showing the sun's position in 1600–1603 and the sinus. Houzeau and Lancaster claim that it is the first work that alludes to prosthaphaeresis, an algorithm from the late 16th and early 17th centuries. for roughly dividing and multiplying using trigonometric formulas. As a member of the Vatican committee, the Jesuit mathematician and Euclides translator Clavius (1538–1612) was in charge of establishing the foundation for the Gregorian calendar. Despite acknowledging the shortcomings of the Ptolemaic model, Clavius, as an astronomer, rejected Copernicus' heliocentric concept. - Refer. Editor: 1626881. II:1217:9 in DBS. Adams (C-2093). French, STC, p. 186. - Lancaster & Houzeau 3291. -Provenance: 18th-century manuscript entry for Pierre-François de Roubaix, "mayeur" of the province and city of Mechelen.
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