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ASTRON is responsible for the operations of the Westerbork Synthesis Radio Telescope (WSRT) and the Low Frequency Array (LOFAR).


The astronomical research at ASTRON is closely aligned with the strengths of our facilities LOFAR and WSRT-APERTIF.

Diversity & Sustainability

ASTRON is committed to achieving a fair, welcoming, and sustainable work environment for all.


Met onze radiotelescopen nemen wij de meest zwakke signalen uit het heelal waar. Daardoor zijn zij kwetsbaar voor elektromagnetische storing. Met het tijdig treffen van de juiste maatregelen kan storing worden voorkomen.

Wireless Data Lab

Draadloze techniek lijkt vanzelfsprekend, maar de ontwikkeling ervan gaat niet vanzelf. Daarom hebben we bij ASTRON een proeftuin ingericht; het Wireless Data Lab.

Making discoveries
in radio astronomy

ASTRON is the Netherlands Institute for Radio Astronomy, and is part of the Institutes organisation of NWO.

Astronomers Discover Fast Radio Bursts That Skewer Nearby Galaxy

Astronomers have found five new Fast Radio Bursts with the upgraded Westerbork radio telescope array. The telescope images revealed that multiple bursts had pierced our neighbouring Triangulum Galaxy. This allowed the astronomers to determine the maximum number of otherwise invisible atoms in this galaxy for the first time.

Published by the editorial team, 12 April 2023

ERC Advanced Grant for research into the origin of fast radio bursts from space

Jason Hessels, Professor of Observational High-Energy Astrophysics at the University of Amsterdam and Chief Astronomer at ASTRON, has been awarded a €3.5 million ERC Advanced Grant to search for the origin of fast radio bursts. Among other things, the research money will be used to develop new hardware to set up a coordinated network of European radio telescopes to study repeating FRBs in more detail.

Published by the editorial team, 30 March 2023

Animation explaining the workings of LOFAR

We have created an animation, which briefly explains the workings of our LOFAR radio telescope.

Published by the editorial team, 23 March 2023

NAC 2023 to be held in Leeuwarden in May

The 78th edition of the Nederlandse Astronomen Conferentie (NAC) will be held this year in the Westcord WTC hotel in Leeuwarden from 15 to 17 May.

Published by the editorial team, 6 March 2023

ASTRON astronomy groups focus on LOFAR and SKA

Major upgrade of International LOFAR Telescope approved

Michiel Brentjens wins Teacher of the Year 2022 award

Jessica Dempsey nominated for Drenthe Woman in the Media Award

People of ASTRON: Klaas Kliffen


Looking at JUICE with PRIDE

© JIVE, University of Tasmania, Guifre Molera Calvés

Planetary Radio Interferometry and Doppler Experiment (PRIDE) of the JUICE mission, while having no dedicated onboard instrumentation, conducts observations of the spacecraft from the first days of the New Earth Commissioning Phase (NECP). This phase has started immediately after the mission launch on 14 April 2023 and will last for about 2.5 months. The major PRIDE assets are a global network of radio telescopes and data processing centers. To be prepared for science operations with JUICE, these assets should be “tuned up”, checked and maintained in fully operational state. As a part of this activity, three radio telescopes, operated by the University of Tasmania (Australia), a PRIDE partner, has begun monitoring the JUICE radio signal from the first days of the in-flight operations.

One of the monitoring observations of JUICE was conducted with three PRIDE 12-m radio telescopes located in Australia: Hobart (Tasmania), Katherine (Northern Territory), and Yarragadee (Western Australia). The signal, detected in these observations, demonstrate the expected strength and stability. During these observations, the spacecraft was at about 7.8 million km from Earth. The University of Tasmania antennas have been tracking the JUICE spacecraft on a regular basis 3 to 4 times per week to calibrate the PRIDE ground-based instrumentation, verify data processing software and maintain operational readiness for future science observations. The ongoing monitoring PRIDE campaign also contributes into studies of space weather.

ASTRON daily image.

Cursus: Toegepaste RF-techniek

Mon 06 Nov 2023 - Thu 09 Nov 2023

De cursus Toegepaste RF-techniek bestaat uit een theoriegedeelte (75%) en hands-on sessies in ons eigen lab (25%).
Deelnemers aan deze cursus dienen een hbo werk- en denkniveau te hebben. De deelnemer kent de basisbegrippen van elektronica. Parate kennis van wiskundige concepten is niet vereist, maar komt wel aan de orde bij de transmissielijntheorie. In de cursus wordt ook complexe rekenwijze toegepast.


Latest tweets

Our congratulations go out to Anna Bilous and her colleagues, for this intriguing paper, which was published in Nature.

Every year on May 4th we put our Westerbork telescopes into mourning mode, to remember all the victims who fought for our freedom. Watch the video that we made a couple of years ago in cooperation with @kampwesterbork, demonstrating this. #4mei #Memorial

Our radio telescopes don't need the darkness to function, but they do need quiet skies, free from radio interference. This month is Dark and Quiet Skies month. What can you do to keep our skies dark and quiet?

Daily Image of the Week: Blast from the past

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