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Gemma Frisius
(1508-1555), a Dutch astronomer, had
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observed an
eclipse of the sun at Louvain on January 24,
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1544 using
pinhole in his darkened room.
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He later
described the process in his book “De Radio
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Astronomica
et Geometrica” (1545) along with an illustration
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of the camera
obscura he used.
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It is thought
to be the first published illustration of a camera
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obscura.
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