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Australian square kilometre array pathfinder: I. system description

Published online by Cambridge University Press:  05 March 2021

A. W. Hotan*
Affiliation:
CSIRO Astronomy and Space Science, PO Box 1130, Bentley, WA6102, Australia
J. D. Bunton
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
A. P. Chippendale
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
M. Whiting
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
J. Tuthill
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
V. A. Moss
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
D. McConnell
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
S. W. Amy
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
M. T. Huynh
Affiliation:
CSIRO Astronomy and Space Science, PO Box 1130, Bentley, WA6102, Australia
J. R. Allison
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia Sub-Department of Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Rd., Oxford, OX1 3RH, UK
C. S. Anderson
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia Jansky fellow of the National Radio Astronomy Observatory, NRAO, 1003 Lopezville Rd, Socorro, NM87801, USA
K. W. Bannister
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
E. Bastholm
Affiliation:
CSIRO Astronomy and Space Science, PO Box 1130, Bentley, WA6102, Australia
R. Beresford
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
D. C.-J. Bock
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
R. Bolton
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
J. M. Chapman
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
K. Chow
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
J. D. Collier
Affiliation:
The Inter-University Institute for Data Intensive Astronomy (IDIA), Department of Astronomy, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW2751, Australia
F. R. Cooray
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
T. J. Cornwell
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia Tim Cornwell Consulting, 17 Elgan Crescent, Sandbach, CW11 1LD, UK
P. J. Diamond
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia SKA Organisation, Jodrell Bank, Lower Withington, Cheshire, SK11 9FT, UK
P. G. Edwards
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
I. J. Feain
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
T. M. O. Franzen
Affiliation:
ASTRON, the Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, Dwingeloo, PD7991, the Netherlands
D. George
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
N. Gupta
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune411007, India
G. A. Hampson
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
L. Harvey-Smith
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW2751, Australia Deans Unit, Faculty of Science, Dalton Building F12 UNSW Sydney, NSW2052, Australia
D. B. Hayman
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
I. Heywood
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia Sub-Department of Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Rd., Oxford, OX1 3RH, UK Rhodes University, PO Box 94, Makhanda (Grahamstown) 6140, Eastern Cape, South Africa
C. Jacka
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
C. A. Jackson
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia ASTRON, the Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, Dwingeloo, PD7991, the Netherlands
S. Jackson
Affiliation:
CSIRO Astronomy and Space Science, PO Box 2225, Ellenbrook, WA6069, Australia
K. Jeganathan
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
S. Johnston
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
M. Kesteven
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
D. Kleiner
Affiliation:
INAF - Osservatorio Astronomico di Cagliari, via della Scienza 5, Selargius, CA09047, Italy
B. S. Koribalski
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
K. Lee-Waddell
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
E. Lenc
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
E. S. Lensson
Affiliation:
CSIRO Astronomy and Space Science, PO Box 276, Parkes, NSW2870, Australia
S. Mackay
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
E. K. Mahony
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
N. M. McClure-Griffiths
Affiliation:
Research School of Astronomy & Astrophysics, The Australian National University, Canberra, ACT2601, Australia
R. McConigley
Affiliation:
CSIRO Astronomy and Space Science, PO Box 2102, Geraldton, WA6530, Australia
P. Mirtschin
Affiliation:
CSIRO Astronomy and Space Science, 1828 Yarrie Lake Rd, Narrabri, NSW2390, Australia
A. K. Ng
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
R. P. Norris
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW2751, Australia
S. E. Pearce
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
C. Phillips
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
M. A. Pilawa
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
W. Raja
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
J. E. Reynolds
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
P. Roberts
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
D. N. Roxby
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
E. M. Sadler
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia Sydney Institute for Astronomy, School of Physics A28, University of Sydney, Sydney, NSW2006, Australia
M. Shields
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
A. E. T. Schinckel
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
P. Serra
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia INAF - Osservatorio Astronomico di Cagliari, via della Scienza 5, Selargius, CA09047, Italy
R. D. Shaw
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
T. Sweetnam
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
E. R. Troup
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
A. Tzioumis
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
M. A. Voronkov
Affiliation:
CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW1710, Australia
T. Westmeier
Affiliation:
ICRAR, M468, The University of Western Australia, 35 Stirling Highway, CrawleyWA6009, Australia
*
Author for correspondence: A. W. Hotan, E-mail: aidan.hotan@csiro.au

Abstract

In this paper, we describe the system design and capabilities of the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope at the conclusion of its construction project and commencement of science operations. ASKAP is one of the first radio telescopes to deploy phased array feed (PAF) technology on a large scale, giving it an instantaneous field of view that covers $31\,\textrm{deg}^{2}$ at $800\,\textrm{MHz}$. As a two-dimensional array of 36$\times$12 m antennas, with baselines ranging from 22 m to 6 km, ASKAP also has excellent snapshot imaging capability and 10 arcsec resolution. This, combined with 288 MHz of instantaneous bandwidth and a unique third axis of rotation on each antenna, gives ASKAP the capability to create high dynamic range images of large sky areas very quickly. It is an excellent telescope for surveys between 700 and $1800\,\textrm{MHz}$ and is expected to facilitate great advances in our understanding of galaxy formation, cosmology, and radio transients while opening new parameter space for discovery of the unknown.

Type
Research Article
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of the Astronomical Society of Australia

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