ASKAP is designed to be a high speed survey instrument with high dynamic range. This requires an extremely wide field-of-view interferometer with Phased Array Feeds (PAFs). The PAF has a total of 188 elements, 94 in each of two polarizations.
The specification for ASKAP is:
A total collecting area of approximately 4,000 square metres, from 36 antennas each 12 metres in diameter
System temperature less than 50 K
Frequency range from 700 MHz to 1.8 GHz
300 MHz instantaneous bandwidth
36 independent beams, each of about 1 square degree, yield overlapping to a 30 square degree field-of-view at 1.4 GHz
Maximum baseline of approximately 6 km
Full cross-correlation of all antennas
Possible remote array station capability located in NSW, approximately 3,000 km from the core site.
First image made with ASKAP's newest receivers September 2015: Just a week after the ASKAP team achieved phase closure with the first three Mk II phased array feed (PAF) receivers installed on ASKAP antennas at the MRO, the first image has been produced with the system.
Phase closure achieved with Mk II PAFs at MRO August 2015: The first tests carried out on three ASKAP Mk II phased array feeds recently installed at the Murchison Radio-astronomy Observatory (MRO) have confirmed in-the-field performance of the newest receiver systems developed for radio astronomy.
New receivers for ASKAP installed at MRO August 2015: The first four production Mk II phased array feed (PAF) receivers are now installed on ASKAP antennas at the Murchison Radio-astronomy Observatory.