ESO Extremely Large Telescope

Start of construction: 2017

Technical First light: mar 2027

First scientific observation: sep 2027

Location: Cerro Armazones, Chile 3000 m height 

5 mirror telescope

M1 mirror : 39m diameter overall. 798 segments 

M4 mirror has been made and under test 

FoV: 10 arc minutes 

Wiki 

Mirror polishing done by SAFRAN 

 

ESO

Mirror 5: