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Keywords: Tycho instrument armillary 11.jpg Tycho Brahe described the construction and use of his zodiacal armillary instrument ARMILLÆ ZODIACALES for measuring altitudes and azimuths of celestial objects http //www kb dk/elib/lit/dan/brahe/images/instrumentstor11 jpg image 1598 source http //www kb dk/elib/lit/dan/brahe/engelsktekst/frame11-en htm PD-old-100 Armillary spheres Astronomiae instauratae mechanica |