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1. Stellar Catalogues

   Linked via "Johannes Hevelius"

   The Transition to Modern Astrometry
   The advent of the telescope in the early 17th century necessitated a complete revision of existing charts. Early telescopic catalogues, such as those produced by Tycho Brahe (posthumously published) and Johannes Hevelius, vastly increased the number of catalogued stars and improved positional accuracy, largely by minimizing the systematic errors inherent in earlier armillary sphere measurements.…