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  1. Astrolabe - Wikipedia

    It serves as a star chart and physical model of the visible half-dome of the sky. Its various functions also make it an elaborate inclinometer and an analog calculation device capable of …

  2. ASTROLABE: Free Natal Chart / Horoscope

    Astrology: Free Natal Chart (Horoscope) from Astrolabe, the leader in automated birth chart reports, relationship reports, and transit and progressed horoscope reports.

  3. Astrolabe | Definition, History, & Facts | Britannica

    astrolabe, any of a type of early scientific instrument used for reckoning time and for observational purposes. One widely employed variety, the planispheric astrolabe, enabled astronomers to …

  4. Astrolabe - World History Encyclopedia

    Aug 31, 2023 · The astrolabe is an astronomical instrument used from around the 6th century to measure time and position by determining the altitude of heavenly bodies like the Sun and …

  5. Interactive Astrolabe - alexboxer.com

    An astrolabe is a beautiful, mathematical map of the ancient, Earth-centered cosmos. The instrument shows the spherical universe flattened onto its midplane (the equator) according to …

  6. A beginner's guide to the astrolabe - BBC Sky at Night Magazine

    May 25, 2022 · An astrolabe is an astronomical instrument used since ancient times. It consists of rotating discs and rulers to show the positions of astronomical objects at any given time …

  7. The Astrolabe: A Mathematical Jewel | UC Geography

    Any instrument used to measure altitudes above the horizon can be called an astrolabe, although there is a major difference between the classic “planispheric astrolabe” and a “mariner’s …

  8. Astrolabe Guide: How It Works & Why It’s ImportantDeluxe …

    Mar 7, 2025 · An astrolabe is an ancient astronomical instrument used to measure time, track celestial bodies, and aid in navigation. It consists of a circular disk with a rotating star map and …

  9. How Astrolabes Work - HowStuffWorks

    Mar 25, 2024 · With an astrolabe, astronomers could calculate the position of objects in celestial spheres, the time of day (or night), the time of year, the altitude of any object, different …

  10. The astrolabe: the Swiss Army knife of ancient celestial navigation

    In the right hands, a trained individual can use the astrolabe to tell the exact time, predict star transits, planetary retrograde motions, and more. It also doubled as an astrological tool,...