6 天之前 · The Extremely Large Telescope: The World's Biggest Eye On The Sky ... European Southern ... Telescope. Instruments. Facts.

An extremely large telescope (ELT) is an astronomical observatory featuring an optical telescope with an aperture for its primary mirror from 20 metres up to 100 metres across, [1] [2] when discussing reflecting telescopes of optical wavelengths including ultraviolet (UV), visible, and near infrared wavelengths.

5 天之前 · The European Extremely Large Telescope (ELT) is a revolutionary scientific project for a 40m-class telescope that will allow us to address many of the most pressing unsolved questions about our Universe.

2023年7月16日 · The European Southern Observatory’s Extremely Large Telescope (ESO’s ELT) is a revolutionary ground-based telescope that will have a 39-meter main mirror and will be the largest telescope in the world for visible and infrared light: the world’s biggest eye on the sky.

ESO’s Extremely Large Telescope, or ELT for short, is a revolutionary ground-based telescope that will have a 39-metre main mirror and will be the largest visible and infrared light telescope in the world: the world’s biggest eye on the sky.

2023年7月11日 · The European Southern Observatory’s Extremely Large Telescope (ESO’s ELT) is a revolutionary ground-based telescope that will have a 39-metre main mirror and will be the largest telescope in the world for visible and infrared light: the world’s biggest eye on the sky.

The Extremely Large Telescope: ... European Southern Observatory. About ... Amount of glass-ceramic Zerodur(c) in the telescope mirrors.