Astrolabe, Iran, AD 1221/1222, diameter of 7 inches, Bliss Collection of Astronomical Instruments
100234560
Astrolabe, Iran, AD 1221/1222, diameter of 7 inches, Bliss Collection of Astronomical Instruments
2018
Digital Photographs
Inscribed: Made by Muhammad b. Abi Bakr b. Muhammad al-Rashidi al-Ibari [or al-Abiri] al-Isfahani". "618 [A.H. = 1221-2 A.D.]"
Astrolabe with rete incorporating sights, 2 latitude plates, mater with pierced throne. The back has a calendar with three apertures, one showing the lunar phase, one the numerical age of the moon, one the positions of the sun and moon in the zodiac. The calendar, worked by the motion of the rete, is moved by a gear train within the mater, comprising 5 cog wheels, 2 of which are double. Pin and horse.
Another example at the Museum of the History of Science in Oxford, 48213
Iran
American Museum of Natural History Library
Information on rights available at the repository.
American Museum of Natural History
Collection
Citation
Abi Bakr, Muhammad b. (artist) and Meyer, Kendra (photographer), “Astrolabe, Iran, AD 1221/1222, diameter of 7 inches, Bliss Collection of Astronomical Instruments,” AMNH Research Library | Digital Special Collections, accessed January 21, 2025, https://lbry-web-007.amnh.org/digital/index.php/items/show/85871.