Astrolabe

About the object

• Description
  Made of brass n 729 A.H. (after Hedschan) =year 1328-29. It was bought it in Marocco in 1907 and was made by Ahmad ibn Ali Sarafi in Spain, Alcalá (nearby Sevilla). The practical use of the astrolabe is to find the time during the day or night (by altitude of the sun or the stars) and the time of a celestial event such as sun...

  Made of brass n 729 A.H. (after Hedschan) =year 1328-29.

  It was bought it in Marocco in 1907 and was made by Ahmad ibn Ali Sarafi in Spain, Alcalá (nearby Sevilla).

  The practical use of the astrolabe is to find the time during the day or night (by altitude of the sun or the stars) and the time of a celestial event such as sunrise or sunset and as a handy reference of celestial positions.

  The astrolabe is made up of several separate parts. The main-part is a disc of brass called the Mother (Mater). Into the Mater fits seven thin discs, called the plates or tables. The seven plates are each engraved and represent the usual projection of the sphere varied only for the particular latitudes for which each was made.

  Expand text Collapse text
• DesignationAstrolabium
• IdentifierS 1565
• Indexing termNavigationsinstrument
• Type Thing

• Inscription
  • Påförd text: Tillverkat av Ahmed ibn Ali al-Sharafi i al-Khala år 729 efter hidjran"".

• Dimensions value
  • Diameter122.0 mm

• MaterialsMetall