Overview

Quick Facts

  • First Light target – 2029
  • Location – Las Campanas Observatory, Chile
  • Altitude of site – 8,248 feet (2,514 meters)
  • Height of telescope housing – 65 meters
  • Moving weight of telescope – 3,968,000 lbs (1,800 tons)
  • Weight of each finished mirror segment
    • Outer off-axis segments 33,000 lbs (16.5 tons)
    • Center segment 30,000 lbs (15 tons)
  • Diameter of each mirror – 28 feet (8.4 meters)
  • Effective diameter of all mirrors – 83.5 feet (24.5 meters)
  • Total collecting area of mirrors – 3,961 sq. feet (368 sq. meters)
  • Mounting type – altitude/azimuth
  • Wavelengths from the visible to mid-infrared – 320 – 25,000 nm (0.32—25µm)