Johannes Fabricius

Johann Goldsmid,[1] better known by his Latinized name Johann(es) Fabricius (8 January 1587 – 19 March 1616),[2] eldest son of David Fabricius (1564–1617), was a Frisian/German astronomer and a modern era discoverer of sunspots in 1611, preceded by Thomas Harriot and followed by Galileo Galilei.

[4] He returned from university in the Netherlands with telescopes that he and his father turned on the Sun.

Johannes first observed a sunspot on February 27, 1611; in Wittenberg in that year he published the results of his observations in his 22-page pamphlet De Maculis in Sole observatis.....[5] It was the first publication on the topic of sunspots.

[6] The pair soon used camera obscura telescopy so as to save their eyes and get a better view of the solar disk, and observed that the spots moved.

In 1895, a monument was erected to his memory in the churchyard at Osteel, where his father had been pastor from 1603 until 1616.

Title page of De Maculis in sole observatis et apparente earum cum Sole conversione, Narratio (1611).