Science Users Information

These pages are aimed at ESO community astronomers and contain all the information required in order to prepare, execute, process and exploit observations with ESO facilities. They also provide information on the scientific activities taking place at ESO. Details can be accessed via the navigation menu.


ESO Science Announcements

50 Years of the ESO Fellowship: Pioneers Across Two Continents (1976-2026)

Published: 21 Apr 2026

On 17 June 2026, ESO will celebrate the 50th anniversary of the Fellowship Programme with events in Garching and Vitacura. The Director General, the Director for Science, and Fellows from across the years will come together to share memories, revisit moments and anecdotes, and reflect on the experiences that have shaped ESO from within.

2025 Chesneau Prize Winners

Published: 20 Apr 2026

The 2025 Chesneau prize for the best PhD thesis in High Angular Resolution Astrophysics has been awarded to two outstanding young researchers: Dr. Violeta Gamez Rosas (left image) and Dr. Manon Lallement (right image). Violeta Gamez Rosas is awarded the prize for her ground breaking observations and astrophysical results on the Active Galactic Nucleus NGC1068 with VLTI/MATISSE, VLTI/GRAVITY and ALMA, as featured in a previous ESO press release in 2022. Manon Lallement is awarded the prize for the development of the FIRST-PL instrument at the Subaru Telescope, using photonic lanterns, as well as the first astrophysical results she obtained using this instrument.

Abstract submission open for ESO Workshop “Bridging Horizons: Harnessing ESO’s Current Facilities for the Dawn of Exoplanet Population Studies”, 2-6 November 2026

Published: 17 Apr 2026

Observations with the VLT, VLTI, and ALMA have pioneered exoplanet science over the past decade. With upcoming results from ESA missions such as Gaia, PLATO, and Ariel, exoplanet research is entering a transformative era of population-scale characterisation surveys. This workshop will bring the community together to explore how current ESO facilities together with powerful archival resources, can best complement exoplanet demographics, atmospheres, and planet formation at the dawn of population-scale studies.

"Illuminating the Active Universe: Multi-Wavelength and Multi-Messenger Insights into AGN", Garching bei München, 14-17 September 2026

Published: 17 Apr 2026

ESO is delighted to announce the upcoming conference Illuminating the Active Universe: Multi-Wavelength and Multi-Messenger Insights into AGN. The conference will be held from in Garching on 14-17 September 2026, on the occasion of the retirement of Paolo Padovani (ESO). It will examine the evolution of Active Galactic Nuclei research from early work on unified schemes of radio-loud sources and BL Lac samples to recent developments in multi-wavelength surveys and multi-messenger observations. 

SPHERE Data Now Available for P95 to P109 (April 2015 - September 2022)

Published: 20 Mar 2026

The second release of SPHERE (Spectro-Polarimetric High-contrast Exoplanet REsearch instrument) data processed by the High-Contrast Data Centre (HC-DC) is now available in the ESO Science Archive Facility. SPHERE is designed for high-contrast imaging, low-resolution spectroscopy, and polarimetric characterisation of extrasolar planetary systems. This release provides reduced IRDIS imaging data acquired between ESO Periods P95 and P109 (April 2015 – September 2022), including SPHERE consortium Guaranteed Time Observations.

The Messenger

The Messenger 195 is now available. Highlights include:

  • Brinchmann, J., Barcons, X. et al.: Expanding Horizons: Transforming Astronomy in the 2040s
  • Brinchmann, J., Leibundgut, B. et al.: ESO Facilities in the 2030s
  • Catinella, B., Cortese, L. et al.: Multiphase Astrophysics to Unveil the Virgo Environment (MAUVE)

The ESO Science Newsletter

The February 2026 issue is now available.

The ESO Science Newsletter, mailed approximately once per month, presents the most recent announcements. Subscription is controlled through the Manage Profile link on the User Portal. Back issues (2013-) are archived.


Citing ESO data in research papers

Researchers are kindly asked to indicate the identifiers (programme IDs or Data DOIs) of the (new or archival) observations they used in their papers as explained in ESO’s data citation policy. This enables the telbib curators to cross-link research output to make data Findabie, Accessible, Interoperable, and Reusable as suggested by the FAIR Principles.  


Pitch Your Research to ESO COMM

Are you an author on an upcoming scientific study based on ESO data that could be relevant to journalists or the wider public? Or are you a Principal Investigator on ESO observations with potential to become stunning images? If so, please consider sending to ESO your paper and/or a preview of the image(s) obtained with ESO telescopes.