ASTRON is responsible for the operations of the 14 dish Westerbork Synthesis Radio Telescope (WSRT) and the Low Frequency Array (LOFAR) which consists of 100.000 small dipoles. ASTRON is also heavily involved in the design and development of the Square Kilometre Array (SKA) which, when built, will be the largest radio telescope in the world.


The Westerbork Synthesis Radio Telescope (WSRT) is a powerful radio telescope that uses a technique called "aperture synthesis" to generate radio images of the sky.


LOFAR (Low Frequency Array) is currently the largest radio telescope operating at the lowest frequencies that can be observed from Earth.

Square Kilometre Array

The Square Kilometre Array will be the most powerful radio telescope in the world. It will enable transformational science that will change our understanding of the Universe.

50 Years Westerbork Radio Observatory

A Continuing Journey to Discoveries and Innovations

History of WSRT

A graphical representation of WSRT's rich and exciting history.

Latest tweets

Today, construction on the #SKA radio telescope officially started. Together with @CGI_Global, S[&]T, and @TriOpSys we are already developing important software components for processing the vast amounts of data the SKA telescope will produce.

Today was the official start of the construction of the @SKAO's #SKA radio telescope in Australia and South Africa. Together with #TOPIC, we are already working on the development of the central signal processor for the SKA Low frequency telescope.

Gigantic radio sources up to ten million light years in size discovered in the universe using the LOFAR radio telescope. Read more about this exciting result on the website of @HambObs

Daily image of the week

On June 13-17, the LOFAR Family Meeting took place in Cologne. After two years LOFAR researchers could finally meet in person again. The meeting brings together LOFAR users and researchers to share new scientific results.