Astrolabe Catalogue

 
astrolabe, inventory number 46680 from Iṣfahān, 1708/9
thumbnail for astrolabe (front), inventory number 46680 from Iṣfahān, 1708/9
thumbnail for astrolabe (back), inventory number 46680 from Iṣfahān, 1708/9
thumbnail for astrolabe (rete front), inventory number 46680 from Iṣfahān, 1708/9
Date1708/9
MakerKhalīl Muḥammad ibn Ḥasan ‘Alī
PlaceIṣfahān
MaterialBrass
Inventory no.46680
AcquisitionPresented by J. A. Billmeir in 1957

View all images for this astrolabe
View detailed provenance for this astrolabe

Throne, Ring and Shackle

The throne is of the indo-persian, engraved type made of brass attached with integrated base made of 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. Scales on the limb: degree scale. More information

Back

The back contains 14 scales of the following types: Altitude; Azimuth of Qibla; Altitude of noon sun; Declination; Shadow square; Cotangent; Terms; Zodiacal signs; Faces; Lunar Mansions; Triplicities; Sine/Cosine. The back is inscribed: with a maker's signature marked as محد خليل صنعه (Muhammad Khalil made this). More information

Rete, Pin & Horse

The rete contains 22 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 pin & horse. A simple, thick pin and an ornate horse hold the rete and tympans together.. More information

Plates

There are 5 plates with latitudes ranging from 22°0' to 43°0' . More information

Rules & Alidades

Type Details
AlidadeDouble-ended.
More information

 

MHS Home | Contact Us | ©2006 Museum of the History of Science