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Old March 18th 20, 03:51 AM posted to alt.astronomy
Ned Latham[_2_]
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Default First identification of Large Magellanic Cloud and AndromedaGalaxy (964AD)

a425couple wrote:

go to here to read the rest:
https://en.wikipedia.org/wiki/Abd_al-Rahman_al-Sufi

Al-Sufi made his astronomical observations at a latitude of 32.7°
in Isfahan.[5]


If he made any at all. Persian scholarship became little more than
compendium-writing under Islam.

He identified the Large Magellanic Cloud, which is visible from
Yemen, though not from Isfahan; it was not seen by Europeans until
Magellan's voyage in the 16th century.[6][7]


False. Ptolemaic Egypt had observatories at Alexandria and Assuan in
the middle of the 3rd century BCE at the latest, because that's when
Eratosthenes calculated the circumference of the Earth, using data
collected from both, along with the known distance between them.

The Large Magellanic Cloud is observable from both and will have been
identified very early in their centuries of service. And that is more
likely than anything else to be Al-Sufi's source. For the Andromeda
Galaxy too.

----snip----