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An astrolabe from the Mughal era exhibited at the National Museum in New Delhi, India. Yantrarāja is the Sanskrit name for the ancient astronomical instrument called astrolabe . It is also the title of a Sanskrit treatise on the construction and working of the astrolabe composed by a Jain astronomer Mahendra Sūri in around 1370 CE.
The first known metal astrolabe in Western Europe is the Destombes astrolabe made from brass in the eleventh century in Portugal. [ 27 ] [ 28 ] (p 140) Metal astrolabes avoided the warping that large wooden ones were prone to, allowing the construction of larger and therefore more accurate instruments.
A Treatise on the Astrolabe is a medieval instruction manual on the astrolabe by Geoffrey Chaucer. It was completed in 1391. It was completed in 1391. It describes both the form and the proper use of the instrument, and stands out as a prose technical work from a writer better known for poetry, written in English rather than the more typical Latin.
[59] [60] A brass and silver astrolabe (which also acts as a calendar) made in Isfahan by al‐Farisi is the earliest surviving machine with its gears still intact. Openings on the back of the astrolabe depict the lunar phases and gives the Moon's age; within a zodiacal scale are two concentric rings that show the relative positions of the Sun ...
[9] [11] The astrolabe was confirmed by laser scanning, which revealed a series of 18 gradations marking 5-degree intervals, and has been named the Sodré astrolabe. It has been proposed that the Sodré astrolabe is a transitional instrument between the classic planispheric astrolabe from which the first mariner's astrolabes made of brass were ...
In 1504–1512 Copernicus made numerous ... al-Sijzi invented an astrolabe based on a belief held by ... and the German word for "copper" (Kupfer). [ab ...
His astrolabe of copper, astronomical tables, ... Already in 1497, Vasco da Gama made use of Zacuto's tables and the astrolabe on his maiden trip to India. [7]
Ibrahim Ibn Saîd al-Sahlì created the "astrolabe of Al-Sahli", an instrument to determine the positions of the stars on the sky, in the city of Tulaytulah (now Toledo, Spain) in the year 1066. He built four more astrolabes between 1067 and 1086.
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