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

Congratulations to our colleague Harish Vedantham who has been awarded a @NWONieuws #Vidi grant for his project e-MAPS! 🥳 With e-MAPS Harish will use @LOFAR to answer the question: what determines the magnetic field of an exoplanet?💫

Congratulations @AstroJoeC on winning the Louise Webster prize with the discovery of Apep, a unique binary star system with the hottest stars in the Universe.

What does the start of construction of @SKAO mean for the Netherlands? Michiel van Haarlem: "we are due to take on work in the following areas: software for the calibration of data and the creation of deep sky images, " read the full interview here:

Another impressive result for LOFAR! An international team of astronomers from @UniLeiden & @mediainaf discovered a galaxy that seems to be wagging it's tail, a tail of 2,5 million light years long! 💫