Ecliptical coordinates of fixed stars observed using armillary astrolabe were compiled in Ptolemy's Almagest. This Star catalogue was the source of the coordinates for construction of various instruments until the end of the Middle Ages. The original but rarely used purpose of this catalogue explained in the Almagest was the construction of a universal precession celestial globe which enables to model rises and sets of the stars and degrees of zodiac at any geographic latitude and historical epoch. A unique preserved example of such a universal globe is the 13th century Premyslid celestial globe saved now in Bernkastel-Kues. A detailed comparison of its construction with the description in Almagest reveals a direct
influence of the ancient Greek astronomical tradition.