BAYER, JOHANN. URANOMETRIA. ULM: JOHANNIS GORLINI, 1661

Folio (323 x 210mm.) Engraved architectural title, hand colored, incorporating vignette view of Ulm, and 51 double-page engraved astronomical charts (by Alexander Mair), each with delicate hand coloring and the stars heightened in gold; title trimmed and mounted to front board and light, mostly marginal spotting. Later calf-backed limo card boards.

THE FIRST ACCURATE CELESTIAL ATLAS. Bayer was the first to use Greek letters to identify the more important stars in each constellation - a method still employed today as the Bayer Designation. Each sheet describes a single constellation or Zodiacal group.