The Astrolabe
The history and uses of the astrolabe, a very ancient astronomical computer for solving problems relating to time and the position of the Sun and stars in the sky.

Queries for www.astrolabes.org

Query User
astrolabe entered by user 7218571
astrolabe entered by user 5468482
astrolabe entered by user 3514146
astrolabe entered by user 3042315
astrolabe entered by user 3024419
astrolabe measurements entered by user 1968537
astrolabes entered by user 6736841
make your own astrolabe entered by user 1968537
using an astrolabe entered by user ditto