But the idea worked: as evidence, Freedman points to the twin Magellan Telescopes, precursors of the GMT equipped with two Angel-baked mirrors cast a decade ago and now operating on an Andean mountaintop in Chile.

• 然而，事实证明这构想是可行的：傅利曼指著双子麦哲伦望远镜（MT的先锋，配有两面安吉尔在10年前铸造的镜子，现正于智利安地斯山脉的山巅上运作。