Answer:
Dutch explorers and celestial cartographers (most notably Pieter Dirkszoon Keyser, Frederick de Houtman, and Petrus Plancius).
Explanation:
1595–1599: First documented systematic mapping of the far southern sky, by Dutch explorers and celestial cartographers (most notably Pieter Dirkszoon Keyser, Frederick de Houtman, and Petrus Plancius).
