Astrolabe Catalogue

 
astrolabe, inventory number 43739 from Iṣfahān, early 18th century
thumbnail for astrolabe (front), inventory number 43739 from Iṣfahān, early 18th century
thumbnail for astrolabe (back), inventory number 43739 from Iṣfahān, early 18th century
thumbnail for astrolabe (rete front), inventory number 43739 from Iṣfahān, early 18th century
Dateearly 18th century
Maker‘Abd al-A’imma
PlaceIṣfahān
MaterialBrass
Inventory no.43739
AcquisitionPurchased from R. S. Clay in 1944

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Throne, Ring and Shackle

The throne is of the indo-persian, engraved type made of brass attached with integrated base made of brass and has a simple, round cross-section ring made of brass and omega type shackle made of brass . More information

Mater

The mater and limb are of one-piece construction. The tab to hold the tympans in place is located at the bottom of the instrument, 180° from the throne.. Scales on the limb: degree scale.

The limb is inscribed: with a marked as [on edge]. [ pending ]. More information

Back

The back contains 16 scales of the following types: Altitude; Declination; Azimuth of Qibla; Altitude of noon sun; Sine/Cosine; Cotangent; Terms; Zodiacal signs; Faces; Lunar Mansions; Shadow square; Triplicities. The back is inscribed: with a serial number marked as عمل رابع عشرون (Opus twenty-four). At bottom edge. with a maker's signature marked as عبد الائمة (ʿAbd al-Aʾimmah). In cartouche. More information

Rete, Nut & Bolt

The rete contains 0 stars. The zodiac on the rete is labelled: حمل , ثور , جوزا , سرطان , اسد , سنبله , ميزان , عقرب , قوس , جدي , دلو , حوت .
The rete is attached using a nut & bolt. Simple, recent replacement.. More information

Plates

There are 4 plates with latitudes ranging from 29°0' to 37°0' . More information

 

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