The European Astronomical Research Organization (ESO) has published an amazing photo of a total lunar eclipse taken by ESO’s Very Large Telescope (VLT) located in Paranal, Chile.
This eclipse, which occurred on January 20-21, 2019, was visible from South America.
The image was created on the basis of a three-hour telescope observation of the Moon.
As it moves into the shadow of the Earth, the Moon becomes darker and takes on a red tint. This redness, caused by sunlight being scattered by the Earth’s atmosphere before reaching the Moon, can be seen inside the track. This trail, and trails of stars in the background, are associated with the rotation of the Earth and are a hallmark of long exposure night sky photographs.
It is noted that the stars in this image are clearly visible due to the high altitude on Mount Paranal, on which the telescope is located, and the lack of light pollution from human settlements.
But bright moonlight can interfere with visible-light astronomical observations. Therefore, astronomers must take into account the position and phase of the moon when planning and conducting observations, ESO notes.
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Source: Racurs
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