In the new image, two laser beams are also seen decorating the night sky.
as they travel overhead. This creates a dazzling trailing effect, where starlight appears to arc over the observatory’s ground-based telescopes.
Two bright orange lasers are also seen beaming out of one of the Unit Telescopes. These laser beams, known as laser guide stars, are used to correct the distortion of starlight caused by Earth's turbulent atmosphere, according to from the ESO. The beams are pointed in opposite directions because the long exposure technique took several hours to complete, during which the telescope moved to observe different targets in the sky, ESO officials said.
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