Johann Hommel

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Johann Hommel (1518—1562) was a German astronomer and mathematician.

In 1552 or 1553, Richard Cantzlar introduced transversal dot lines in graduations. It was a variant of the zigzag line system introduced by Hommel. Tycho Brahe obtained the zigzag line system from Hommel.

Hommel crater, on the Moon, is named after him.

[edit] Sources

  • (English) [arxiv.org/pdf/astro-ph/9902030 Observatories]
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