1611-1687 German Astronomer Johannes Hevelius was the last astronomer of repute to carry out major observational work without a telescope. Though he rejected the use of telescopic sights for stellar observations and positional measurements, he did use...

Johannes Hevelius (Latin), also called Johannes Hewel, Johann Hewelke, Johannes Höwelcke in German, or Jan Heweliusz (in Polish), (born January 28 1611 – died January 28 1687), was a Protestant councillor and mayor in Danzig (Gdańsk),...