The Astrolabe in 5 parts

Steve H created a set of five short videos about the Astrolabe last year.  This provides a short overview of the instrument.  It explains its use, history and construction. The second part covers some more detailed calculations. The third part explores the use of an Ephemeris explaining, for […]

The Astrolabe – what it is, and how to make one

Before the 17th century the premier astronomical instrument was the astrolabe, an early ancestor of the slide rule, theodolite and planetarium.