Kepler's Astronomical Tables and Optical System

Timeline

1. 1609–1619Prague · PragueIn Astronomia Nova and Harmonices Mundi Kepler established the law of elliptical planetary orbits, and in Dioptrice proposed the Keplerian telescope optical design using two convex lenses, laying the theoretical foundation for precise observation and ephemeris computation.
2. 1627–1635Ulm · UlmThe Rudolphine Tables gave planetary position tables based on Kepler's elliptical orbit model, with accuracy markedly superior to the older Ptolemaic–Copernican ephemerides, and became an important reference for Central European observatories and navigational computation.
3. 1631–1640Network of Central European universities and observatories · Central EuropeAfter Kepler's death in 1630, his astronomical tables and optical system continued in use among Central European scholars, paired with improved refracting telescopes for predicting planetary positions, forecasting eclipses, and geodetic surveying.