The Astronomical Observatories of Jai Singh c21.s2.2
The Astronomical Observatories of Jai Singh c21.s2.2
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c21.s2.2
¹ The longitude of modern Alexandria is given as 29° 51' East of Greenwich. The astrolabes generally gave 61° 54' East of the Fortunate Isles (see p. 127).