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L’astrolabe :
Largeur 6 m 34, hauteur 4 m, poids 5000 kg, diamètre de la terre 1 m 82, de la lune 0.49
échelle 1/7 000 000e ; Accélération de 2000 fois
(From my own archived digital photos, 2017)
This astrolabe, which would delight any astronomical navigation enthusiast, is in a display case at the National Archaeological Museum (MAN) in Madrid, Spain.
The explanatory text on the MAN website reads:
This Andalusian astrolabe has five plates that serve for 11 latitudes, among which those corresponding to Mecca, Toledo, and Seville stand out.
Its spider has indicators for 24 stars.
On the back, it is engraved with the zodiacal calendar, the shadow square, and an inscription in Kufic characters with the name of its creator (Ibrahim ibn Sa'id al-Shali, famous Andalusian astronomer) and its construction date: 459 AH (1067 AD).
Its alidade and front slab are from a later period.
www.man.es/man/dam/jcr:f4eec240-077f-4a29-a5dc-8c51511e91...
ASTROLABIO ANDALUSÍ DE IBN SAID (SIGLO XI) 2017
(De mis propias fotos digitales archivadas, año 2017)
Este astrolabio, que haría las delicias de cualquier aficionado a la navegación astronómica, está en una vitrina del Museo Arqueológico Nacional (MAN) de Madrid, España.
El texto explicativo en la web del MAN dice:
Este astrolabio andalusí tiene cinco láminas que sirven para 11 latitudes, entre las que destacan las correspondientes a La Meca, Toledo o Sevilla.
Su araña tiene indicadores para 24 estrellas.
En el dorso, tiene grabado el calendario zodiacal, el cuadrado de sombras y una inscripción en caracteres cúficos con el nombre de su autor (Ibrahim ibn Sa’id al-Shali, célebre astrónomo andalusí) y su fecha de construcción: año 459 de la Hégira (1067 d.C.).
Su alidada y la regleta frontal son de época posterior.
www.man.es/man/dam/jcr:f4eec240-077f-4a29-a5dc-8c51511e91...
Dragon sculptures encircle an astronomical device, showcasing ancient Chinese craftsmanship at the Beijing Ancient Observatory.
Looking down on the astrolabe on Deck 3 from Deck 5
Detail of the functioning astrolabe on Deck 3. I don't know if it's accurate, seeing as how the ship is constantly moving and changing course, but the parts rotate.
--- We Love Role-Play December Round (Dec 4 12PM SLT-)
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.lovelysweet. Selene Eyes
::Static:: Hoarfrost Astrolabe
Credits
A Hindu planisphere astrolabe made in Jaipur, India, in 1836. A reminder that some of astronomy's greatest accomplishments came from beyond Europe and North America.
Détail (astrolabe) de l'horloge astronomique de la Primatiale Saint-Jean de Lyon (XIVème s.)
Astrolabe with Lunar Mansions and Quadrans Vetus Horary Quadrant
Astrolabe with Lunar Mansions and Quadrans Vetus Horary Quadrant
Astrolabe with Lunar Mansions and Quadrans Vetus Horary Quadrant
