CSIRO's ASKAP Radio Telescope

CSIRO's new ASKAP antennas at the Murchison Radio-astronomy Observatory. Credit: CSIRO

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.

Early science results with ASKAP

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Latest News

CSIRO staff at ICRAR's AstroFest in Perth. CSIRO and ICRAR build thousands of antennas at the Perth AstroFest
March 2015: Australia’s largest annual astronomy festival returned to Perth this year, with CSIRO and ICRAR teaming up to build (small LEGO replica) ASKAP antennas in Curtin Stadium for AstroFest.
A production line of phased array feed receivers in the CSIRO Marsfield workshop. ASKAP team busy with Mk II PAF assembly ahead of deployment to site
March 2015: Production and assembly of CSIRO's Mk II phased array feed receivers for ASKAP is ramping up ahead of deployment to the MRO in Western Australia.
Graph showing results of latest PAF measurements. Credit: CSIRO ASKAP PAF performance signficantly improved with Mk II system
February 2015: On-dish measurements from CSIRO’s newest phased-array feed (PAF) have confirmed low-noise performance across the entire ASKAP frequency band.

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