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Date: |
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Description: | The mater and three of the five plates are late Ottoman and datable to circa 1800 whereas the rete is of a much higher quality and is Iranian, possibly dating from the late-18th or early-19th century. The other two plates are probably by the same maker as the rete, since they are also Iranian and of a better quality than the rest of the instrument. It could be that the maker of the mater had acquired the rete and two plates and then decided to construct a complete astrolabe using them.
The throne is plain, with lateral lobes and a square base. The mater has 'spiralling' lines and concentric circles, presumably for a gazetteer which has not been engraved. The plates cover latitudes between 30�-40�. The back of the instrument bears a zodiacal/calendrical scale with Seleucid month-names, from which the Ottoman identification is gained. The alidade is a non-functional replacement, the mater being twice as large as it is, and the wedge is also a replacement, dated 1970.
Negative numbers F8785, B8786
caption: Astrolabe: dismounted obverse
caption: Astrolabe: dismounted reverse | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | Throne Wedge Gazetteer astrolabes Plate Rete Mater Alidade | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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