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⏱ Time and Location
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⭐ Star Information
Constellation
Magnitude
Right Ascension
Declination
📜 What is an Astrolabe?
The astrolabe is a two-dimensional model of the sky. It projects the celestial sphere onto a flat surface using stereographic projection.
History
Invented in ancient Greece, it became widespread in the Islamic world from the 8th century onward. It was used for centuries by astronomers, navigators and timekeepers.
Uses
- Time determination and hour calculation
- Finding cardinal directions
- Determining star positions
- Observing sign risings
- Sunrise and sunset times
Parts
Mater
Main body
Tympan
Latitude plate
Rete
Star map
Rule
Ruler