The web application SkyCalc provides a web interface to obtain models of transmission and radiance spectra in physical units, calculated on ESO servers with this model for configurable observation ...

E-ELT PUBLICATIONS AND DOCUMENTATION Project documents E-ELT Top Level Requirements Observatory Instruments ELT-CAM (now MICADO) ELT-IFU (now HARMONI) ELT-MIDIR (now METIS) ELT-HIRES (now ANDES) ...

HARPS, the High Accuracy Radial velocity Planet Searcher at the ESO La Silla 3.6m telescope is dedicated to the discovery of extrasolar planets. It is a fibre-fed high resolution echelle spectrograph.

ESO's ruling body is its Council, which delegates day to day responsibility to the Executive under ESO's Director General. Other governing bodies of ESO are: the Finance Committee (FC), the Scientific ...

The 2.2m telescope at La Silla has been in operation since early 1984 and is on indefinite loan to ESO from the Max Planck Gesellschaft. The telescope time is shared between the MPI and ESO Observers.

ESO's mission is to provide its astronomical community with worldwide competitive ground-based observing capabilities to probe the Universe from its first billion year to the present time. In order to ...

Today's Picture of the Week depicts different angles of a very peculiar asteroid named (44) Nysa. Asteroids are leftovers from the formation of planets in the Solar System, with the majority found in ...

Astronomers have finally obtained firm evidence that Betelgeuse, a famous star in the Orion constellation, is not alone. Using ESO’s Very Large Telescope (VLT) they have obtained the clearest image ...

Using ESO's Very Large Telescope (VLT), astronomers have found an object in another planetary system that challenges astronomical labels. The object resembles a moon in that it orbits another object ...

This animation demonstrates how astronomers found a ‘moon’ in the CD-35 2722 system. CD-35 2722 is a star about half as massive as the Sun, seen here in the background (point-like source). It has a ...

The ESO Annual Report 2025 is now available online, offering an engaging and high-level overview of ESO’s activities from the past year. The report was recently approved by the ESO Council at its June ...

Astronomers are surprised by a mysterious shock wave around the dead star RXJ0528+2838, studied with ESO’s Very Large Telescope. The dead star moves through space creating a so-called bow shock, as ...