EUROPEAN SOUTHERN OBSERVATORY (ESO)
and the projects of ELT (Extremely Large Telescope)

Above, the project of the ELT 39m-telescope.

The project of the building of an "Extremely Large Telescope" with a primary mirror of a diameter of 39 meters, is now started on a site near Paranal (Chile). It will observe in visible and infrared wavelengths from 2025.

Details on this project and on other similar projects are available below:


- ELT (www.eso.org): Extremely Large Telescope de l'ESO
- CELT (celt.ucolick.org): California Extremely Large Telescope
- OWL (www.eso.org/projects/owl): Overwhelmingly Large Telescope
- GMT (www.gmto.org): Giant Magellan Telescope