ESO — Reaching New Heights in Astronomy
View in browser
ESO News
18 December 2023

The construction of the European Southern Observatory’s Extremely Large Telescope (ESO's ELT) has reached an important milestone with the delivery to ESO and shipment to Chile of the first 18 segments of the telescope’s main mirror (M1). Once they arrive in Chile, the segments will be transported to the ELT Technical Facility, at ESO’s Paranal Observatory in the country’s Atacama Desert, where they will be coated in preparation for their future installation on the telescope main structure. Unable to be physically made in one piece, M1 will consist of 798 individual segments arranged in a large hexagonal pattern, with an additional 133 being produced to facilitate the recoating of segments. With a diameter of more than 39 metres, it will be the largest telescope mirror in the world.

The release, images and videos are available on:

Kind regards,
The ESO Department of Communication
18 December 2023

  ESO Announcements

Tom Ray elected as next ESO Council president

7 December 2023: Tom Ray, Senior Professor and Director of Cosmic Physics at the Dublin Institute for Advanced Studies, Ireland, has been elected as the next president of ESO’s main governing body ...

Read more


The impact of climate change on astronomy

Rebecca Forsberg

Pamela Freeman

15 December 2023: With nearly 20 telescopes currently in operation, ESO’s observatories play a key role in the exploration of the Universe. Located in the remote Atacama Desert of Chile, the observatories have ...

Read more

 Pictures of the Week

11 December 2023
Road to the ELT

Upcoming Events

A magical night in the Atacama Desert  A stellar graveyard in the sky  Guiding lights to the stars  Uncovering supernovae secrets  E.(L).T. phone home 

View in browser

Follow us on:

Facebook Twitter Instagram Flickr YouTube Itunes Scribd Issuu LinkedIn

European Southern Observatory, Karl-Schwarzschild-Str 2, D-85748 Garching bei München, Germany