2018-09-212018-09-21http://172.16.52.76:80/cdm/ref/collection/coll7/id/66https://hdl.handle.net/20.500.12111/1530Reproductions of three separate illustrations from "Tychonis Brahe Astronomiae instauratae mechanica" (Amsterdam, 1662); 1) Diagram of the Astronomical Trigonometric Sextant designed by the Danish astronomer Tycho Brahe to determine distances; 2) Diagram of the Equatorial Armillary Sphere to observe the stars and heavens; 3) Diagram of the Great Armillary Sphere designed to observe the stars and heavens. All three were photographed by Michael Berry.PrintImage