This web interface gives access to the reduced data of a number of projects/observations performed with the Westerbork Synthesis Radio Telescope in the last years.
The Westerbork Synthesis Radio Telescope
The Westerbork Synthesis Radio Telescope (WSRT) is an aperture synthesis interferometer that consists of a linear array of 14 antennas arranged on a 2.7 km East-West line. Each antenna has a diameter of 25m. Ten of the telescopes are on fixed mountings while the remaining four dishes are movable along two railtracks. The WSRT is an open user facility. The aerial photo shows the configuration of the 14 dishes along an east-west line. In this view looking east, the last two movable antennas can just be seen in the open space at the upper left. More information can be found at
This Archive
This archive contains pointed observations as well as mosaic continuum observations of large fields. Some of the pointed observations are line (21-cm HI) while in other cases are continuum observations. In the case of line observations, both the data cube but also final products like total intensity and velocity fields are available. The list of available projects is given on the right.
If you use data from this archive in publications or presentations, please acknowledge the original authors who produced and provided the data. Please also acknowledge the use of this archive: "We have made use of the WSRT on the Web Archive. The Westerbork Synthesis Radio Telescope is operated by the Netherlands Institute for Radio Astronomy ASTRON, with support of NWO."

For enquires or remarks please contact

Pointed observations

Single objects

Large Fields


ASTRON | WoW - Westerbork on the Web