Building a full-scale model of the world's largest planned telescope mirror

On October 15, 2011, the European Southern Observatory invited the public to its Garching headquarters to construct a full-size mock-up of the European Extremely Large Telescope mirror. This video captures that collaborative effort, offering a rare look at the scale of the world's largest planned telescope project.

The European Extremely Large Telescope (E-ELT) is designed to be the largest telescope in the world. During an open house event held on October 15, 2011, in Garching bei München, Germany, thousands of visitors participated in assembling a full-scale representation of its primary mirror. This initiative provided the public with a tangible sense of the engineering scale required for such an ambitious astronomical instrument.

Source: ESOcast 37: Full-size Mock-up of World's Largest Telescope Mirror | ELT Updates