Soubor:Partial Lunar Eclipse 2019-07-16.jpg

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Fotografie + Description:

  • English: Composite image of the partial lunar eclipse on July 16, 2019. The image in the center was taken at 21:31 UT, at maximum eclipse, when about 65% of the Moon has immersed into the Earth's dark umbra. The images to the right and the left were taken one hour and nine minutes earlier and later, respectively - exactly the time it took the Moon to travel it's own diameter. The images were then carefully stacked in Photoshop, to represent the Moon's true motion trough the Earth's shadow.
  • By combining these three images, one get's a good impression of the southern edge of the Earth's umbra, trough which the moon passed during that eclipse.
  • Around 330 BCE, greek philosopher Aristotle suggested that the Earth must be a sphere, based on the shape of the Earth's shadow he observed during lunar eclipses.
  • The three seperate shots are 1/60 second exposures, taken with a Canon EOS 550D at ISO 200, using a 90/1000mm refractor telescope.
  • Date: 16 July 2019
  • Author: H. Raab (User:Vesta)
+ pochází z Wikimedia Commons, kde má status – This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license. (CC BY-SA 4.0)

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