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Alonso de Santa Cruz

Alonso de Santa Cruz (1505–1567) was a Seville-born cartographer, cosmographer and historian. He served at the Casa de Contratación and the Council of the Indies, where he maintained the Padrón Real, the crown's secret master chart. In 1530 he produced the first map of magnetic variation from true north and designed new nautical instruments.

He believed magnetic variation could help determine longitude. At Philip II's request he compiled in 1542 the Islario general, a survey of the world's islands, and he also taught cosmography at the court of Charles V.

References

  1. en.wikipedia.org/wiki/Alonzo_de_Santa_Cruz
  2. es.wikipedia.org/wiki/Alonso_de_Santa_Cruz