Observing the sky with a brass sextant, Machinae coelestis, 1673, Johannes Hevelius, Danzig

---

Size: 2958px × 4735px
Photo credit: © history_docu_photo / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1673, 17th, astrologer, astrology, astrometry, astronomer, astronomical, astronomy, astrophysics, book, brass, celestial, century, coelestis, construction, cosmic, cosmology, cosmos, danzig, explorer, galaxy, gdańsk, hevel, hevelius, hewelcke, heweliusz, historic, historical, history, instrument, instruments, invention, jan, johann, johannes, lunar, machinae, navigation, observation, observational, observations, observing, planet, planetary, polish, researcher, science, sextant, space, stellaeburgum, sternenburg, studies, technique, technology, topography, universe