Radio Observatory

The Radio Observatory is responsible for the astronomical exploitation of the Westerbork Synthesis Radio Telescope (WSRT) and the LOw Frequency ARray (LOFAR).

The Westerbork Synthesis Radio Telescope, one of the most powerful radio observatories in the world, is an open user facility available for scientists from any country. It is also part of the European VLBI network (EVN) of radio telescopes.  APERTIF (APERture Tile In Focus), a next generation observing system using focal plane array technology, is being developed for the WSRT in order to significantly expand its field of view and its survey speed, enabling new, innovative types of astronomical research.

LOFAR is a radio interferometric array consisting of many low-cost antennae, organised in stations arranged in an area of 100km diameter as well as several international stations and operating between 10 and 250 MHz.

Astronomers can request observing time for LOFAR using this NorthStar link  and following the instructions given in the "Announcement for Opportunity" issued periodically.Oppurtinities for observing with APERTIF will be advertised in due course.

These web pages provide further information for the WSRT and the LOFAR operations. 

Technical inquiries and requests for support can be requested by e-mail to wsrt-support [at] astron [dot] nl (wsrt-support AT for the WSRT and to sciencesupport [at] astron [dot] nl ( for LOFAR, where they will be answered or forwarded as needed.

Contact e-mail addresses

rvermeulen [at] astron [dot] nl (Radio Observatory director)      R. Vermeulen 
secretaryobservatory [at] astron [dot] nl (Secretariat)    M. Tibbe, L. Elpenhof
sciencesupport [at] astron [dot] nl (Science Support)    R. Pizzo, L. Cerrigone, R. Fallows, M. Iacobelli, E. Orru', A. Shulevski, S. ter Veen
brentjens [at] astron [dot] nl (Telescope Astronomers)    M. Brentjens, A. Polatidis
kuper [at] astron [dot] nl (VLBI with WSRT)    A. Polatidis, G. Kuper

Design: Kuenst.    Development: Dripl.    © 2015 ASTRON