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Defectus Solis Partialis: Zahn 1696

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  • Title: Defectus Solis Partialis
  • Author: Johann Zahn
  • Date: 1696
  • Medium: Copperplate engraving
  • Condition: Very Good - light age toning and foxing, minor surface dirt, issued center fold
  • Inches: 18 1/4 x 15 1/2 [Paper]
  • Centimeters: 46.36 x 39.37 [Paper]
  • Product ID: 3110025

Defectus Solis Partialis, Anno MDCXCII. Die 23 Iunii st. V post mer: observatus Norimbergae sub Elev. Poli. 49°27'20".

Praecipuarum aliquot Phasium in Defectu Solari Synoptica repraesentatio.

Singularum Phasium in hoc Defectu Solari seorsim projectarum et ad unum eundenque Verticalem, qui erat sub finem Eclipsis, hora nempe 2. m. 18. sec: 25 reductarum, explanatio.

"A Partial Solar Defect, in 1692. June 23. 5 after noon: observed at Nuremberg under Elevation of the Pole 49°27'20".

Synoptic representation of some of the main phases in the solar system.

The individual phases in this solar eclipse are projected separately and at one and the same vertical axis, which was at the end of the solar eclipse, at the second hour, 18th minute, 25th second."

Celestial chart by Johann Zahn (1641-1707), German mathematician and scientist who wrote prolifically on the camera obscura and other topics related to optics. Demonstrates the various phases of a solar eclipse which occurred on June 23, 1692. Published in Zahn's Specula Physico-Mathematico-Historica (1696).