Talk:Istanbul observatory of al-Din

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How can this be one of the greatest telescopes in the arabic wolrd, when the telescope was not yet invented?

Good point. I'll fix it. – Quadell ^{(talk) (sleuth)} 18:15, Apr 30, 2005 (UTC)

I guess meant the Islamic world, Istanbul never was under the control of an Arabic tribe or nation. —Preceding unsigned comment added by Osmanakan (talk • contribs) 13:16, 18 February 2008 (UTC)