Universal astrolabe by Juan de Rojas, replica | Hemisferium

If you are looking for a gift for someone who loves astronomy and history, the Astrolabium De Rojas is a piece with a story to tell. With an astrolabium, astronomers determined the position of the sun and the stars and calculated the time from them. A regular astrolabium required a separate plate per latitude. The Spanish astronomer Juan de Rojas used a projection that works at every latitude in the 16th century.

Hemisferium makes replicas of historical scientific instruments. This astrolabe is therefore primarily a decorative and educational piece for the office or bookcase. Those who prefer to view the sky from outside have more use for it. a rotating star map for the Netherlands.

If you really want to work with it, then read the instructions first, because using an astrolabium takes some practice. In our astronomy knowledge center find more background information about astronomy.

An astrolabe from the German tradition is The astrolabe of Georg Hartmann.