Testing a modified ASKAP Mark II phased array feed on the 64 m Parkes   radio telescope
  We present the first installation and characterization of a phased array feed (PAF) on the 64 m Parkes radio telescope. The combined system operates best between 0.8 GHz and 1.74 GHz where the beamformed noise temperature is between 45 K and 60 K, the aperture efficiency ranges from 70% to 80%, and the effective field of view is 1.4 deg$^2$ at 1310 MHz. After a 6-month trial observing program at Parkes, the PAF will be installed on the 100 m antenna at Effelsberg. This is the first time a PAF has been installed on a large single-antenna radio telescope and made available to astronomers. 
A. P. Chippendale and R. J. Beresford and X. Deng and M. Leach and J.   E. Reynolds and M. Kramer and T. Tzioumis
astro-ph.IM