Isaac Habrecht II (1589–1633) was a professor of astronomy and mathematics in Strasbourg. He was also a doctor of medicine and philosophy. Uranography Isaac Habrecht II made a celestial globe and a couple of celestial planispheres. He introduced some constellations that were created by a Dutch cartographer, Plancius, and he invented now the obsolete constellation Rhombus. It followed by a French cartographer Royer. Later, it was turned into le Reticule Romboide (now Reticulum) by a French astronomer, de Lacaille. Family Isaac Habrecht I: his father, a horologist. Isaac Habrecht III: his nephew, a clockmaker. See also Uranography Notes References Warner, D. J. (1979). Sky Explored: Celestial Cartography 1500–1800. New York: Alan R. Liss; Amsterdam: Theatrum Orbis Terrum. pp. 104–105. 17th-century German astronomers 1589 births 1633 deaths