How does the Giant Magellan Telescope (GMT) achieve its immense scale under construction?

Answer

With seven monolithic 8.4-meter mirrors arranged hexagonally.

The GMT is achieving an effective aperture equivalent to a 24.5-meter mirror by arranging seven individual monolithic 8.4-meter mirrors in a hexagonal pattern.

How does the Giant Magellan Telescope (GMT) achieve its immense scale under construction?
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