The era of extremely large telescopes(ELT) is beginning The era of extremely large telescopes is beginning.ESO's Extremely Large Telescope(ELT) is currently under construction in the remote Chilean Atacama Desert.The ELT will dwarf the already impressive VLT with its vast mirror at 39 metres in diameter! However, constructing a single, science-quality mirror of such a size is simply not possible — the ELT’s primary mirror will, in fact, be a complex .. 2018. 10. 29. 이전 1 다음