Introduction

Plunge into the world of XVI century sailors and navigators. Using your own replica of a mariner's astrolabe measure the altitude of the Sun or other celestial objects and determine the latitude of YOUR ship.

(or give it to someone who loves sailing and astronomy.  We guarantee - he/she will be delighted.)

General information

• diameter: 10 cm,
• max. height 125mm, 10mm thick
• made of solid brass
• hardwood display stand included
• astrolabe is fully functional
• information booklet included
• packed in elegant box

Additional information

To find the latitude of the ship at sea, the XVI century navigators had to measure the noon altitude of the Sun during the day (or the altitude of a star of known declination when it was on the meridian at night). Almanac were then used to find the Sun's or star's declination for the date. The latitude was calculated then as: 90° - measured altitude + declination .

This is a reproduction of the nautical astrolabe from the National Maritime Museum of Greenwich  (based on the replica in Naval Museum of Madrid).