ESO's Extremely Large Telescope structure rotated for first time in milestone construction milestone
ESO's Extremely Large Telescope (ELT) reached a major construction milestone as its structure was rotated for the first time inside the dome. The ELT will feature a 39-metre-diameter main mirror composed of 798 segments, making it the largest optical telescope on Earth. The image captured shows team members standing above the massive mirror support structure, highlighting the telescope's enormous scale.
Key quotes
This 39-metre-diameter reflective surface will comprise 798 mirror segments that will work together as a single mirror, in what will be the biggest optical telescope on Earth.
For the first time, the telescope's structure was rotated
Looking almost like an optical illusion, today's Picture of the Week highlights why ESO's Extremely Large Telescope (ELT) is called that.
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