The International LOFAR Telescope consists of many LOFAR stations that radiate from the Netherlands and which will soon stretch from Ireland to Poland. The longest baseline stretches about 1,900 km, making it possible to produce high resolution images at low radio frequencies (~0.1 arcsecond at 200 MHz).
LOFAR was used to make images of the Whirlpool Galaxy, a large spiral galaxy first sketched by the 3rd Earl of Rosse at Birr Castle. This images was created by another Irish astronomer, David Mulcahy at the University of Manchester. You can find out on this from their press release.
Astronomers have used LOFAR to produce the best image ever taken of a bubble of gas being blown our of a super-massive black hole. The image at left below shows the gas glowing a low frequencies, while the image at right shows the corresponding optical image. Further details can be found on the ASTRON website.
The enigmatic radio galaxy Cygnus A is one of the brightest objects that LOFAR can see. This image by John McKean, who is now with the Square Kilometre Array team in Manchester, shows plasma jets from the black hole that stretch 2,000 light-years from the core of Cygnus A.