Open House Day: Behind the scenes at ESO on 3 October 2026
On Saturday 3 October 2026, the European Southern Observatory (ESO) will open its doors during the Open House Day of the Garching Research Campus in the north of Munich, Germany. This will be an exciting opportunity to visit ESO and other renowned research institutes for a behind-the-scenes experience, all for free. The ESO Supernova Planetarium & Visitor Centre will also offer planetarium shows and other activities.
From 10:00 to 17:00 CEST, the ESO Headquarters in Garching bei München will open to visitors with a special programme perfect for those with a passion for astronomy and the facilities that make it possible. Discover the science and technology behind ESO’s state-of-the-art telescopes, meet the people working on and with them, and find out how instruments are prototyped and tested. ESO astronomers and engineers will be at the premises all day to answer your questions. ESO will even provide a live connection to Chile, where the organisation’s telescopes are hosted. In short: a perfect Science Day Out!
Share your impressions of the visit online using the event’s hashtags (#TagDerOffenenTür, #EntdeckenCheckenWissen) and by tagging us @esoastronomy on Facebook or Instagram, and @eso.org on Bluesky, and @esosupernova on Facebook and @eso_supernova on Instagram.
Activities overview
- Talks, live connection to Chile, and videos: talk live to one of our telescope operators at ESO’s observatories in Chile, listen to astronomers and engineers talk about fascinating science and technology, or enjoy brief videos about ESO and the work we do.
- Kids activities: Get your infrared picture taken, build a mini-telescope out of Lego or have a galaxy painted on your cheek. Visit all stations to collect stamps and get a present!
- Planetarium shows: Experience a planetarium show in the ESO Supernova Planetarium & Visitor Centre (pre-registration required*)
- Inclusive astronomy: Explore star and planet formation through touch
- Mechanical workshop: See live machining from raw material to precision parts that will be installed on ESO’s telescopes. A number of limited-edition machined mini telescopes will be given away in exchange for a contribution to the ESO Charity Group.
Download the full programme in English (PDF) or German (PDF).
Practical information
- All activities are free of charge.
- ESO has a cafeteria where a limited amount of food and light refreshments will be available in exchange for a donation to the ESO Charity Group.
- Media representatives who wish to attend the event are kindly asked to confirm their participation by contacting [email protected].
Notes
During this event, photographs and video recordings will be made. These may contain non-directly identifiable people (e.g. group shots). If you are clearly identifiable, we will obtain your written consent. Read more on the use of this material and your rights in our Privacy Notice (PDF).
Courtesy of European Southern Observatory
Source: https://www.eso.org/public/announcements/annlang26002-de/
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