The primary reflector of the Nançay radio telescope.

The Nançay radiotelescope (NRT) is a single dish antenna with a collecting area of 6912 m², equivalent to that of a 94 m-diameter parabolic dish. The half-power beam width at 21-cm is 3.6 arcmin (E-W) x 22 arcmin (N-S) (at zero declination). The system temperature at a declination of 15° is about 35 K at 1.4 GHz in both horizontal and vertical polarisations. The frequency covergage of the new receiver is continuous from 1.1 GHz up to 3.5 GHz and offers full Stokes parameter measurements. The telescope can observe any source above -39° in declination. Due to its meridian nature, it can track a given source for about one hour.

The Nançay radio telescope, full view.

The NRT pulsar backend uses CASPER-Berkeley technology for the spectrometer/filter-bank board and a GPU-based (graphical processing unit) cluster for coherent dedispersion and folding. The present state of the instrumentation allows us to analyze a 128-MHz bandwidth, splitted in 32 4-MHz sub-channels with two complex polarizations. Please visit the Nançay radio telescope wesbite for more information.