Interferometric imaging with the 32 element murchison wide-field array

S. M. Ord; D. A. Mitchell; R. B. Wayth; L. J. Greenhill; G. Bernardi; S. Gleadow; R. G. Edgar; M. A. Clark; G. Allen; W. Arcus; L. Benkevitch; J. D. Bowman; F. H. Briggs; J. D. Bunton; S. Burns; R. J. Cappallo; W. A. Coles; B. E. Corey; L. DeSouza; S. S. Doeleman; M. Derome; A. Deshpande; D. Emrich; R. Goeke; M. R. Gopalakrishna; D. Herne; J. N. Hewitt; P. A. Kamini; D. L. Kaplan; J. C. Kasper; B. B. Kincaid; J. Kocz; E. Kowald; E. Kratzenberg; D. Kumar; C. J. Lonsdale; M. J. Lynch; S. R. McWhirter; S. Madhavi; M. Matejek; M. F. Morales; E. Morgan; D. Oberoi; J. Pathikulangara; T. Prabu; A. E.E. Rogers; A. Roshi; J. E. Salah; A. Schinkel; N. Udaya Shankar; K. S. Srivani; J. Stevens; S. J. Tingay; A. Vaccarella; M. Waterson; R. L. Webster; A. R. Whitney; A. Williams; C. Williams

doi:10.1086/657160

Interferometric imaging with the 32 element murchison wide-field array

S. M. Ord, D. A. Mitchell, R. B. Wayth, L. J. Greenhill, G. Bernardi, S. Gleadow, R. G. Edgar, M. A. Clark, G. Allen, W. Arcus, L. Benkevitch, J. D. Bowman, F. H. Briggs, J. D. Bunton, S. Burns, R. J. Cappallo, W. A. Coles, B. E. Corey, L. DeSouza, S. S. DoelemanM. Derome, A. Deshpande, D. Emrich, R. Goeke, M. R. Gopalakrishna, D. Herne, J. N. Hewitt, P. A. Kamini, D. L. Kaplan, J. C. Kasper, B. B. Kincaid, J. Kocz, E. Kowald, E. Kratzenberg, D. Kumar, C. J. Lonsdale, M. J. Lynch, S. R. McWhirter, S. Madhavi, M. Matejek, M. F. Morales, E. Morgan, D. Oberoi, J. Pathikulangara, T. Prabu, A. E.E. Rogers, A. Roshi, J. E. Salah, A. Schinkel, N. Udaya Shankar, K. S. Srivani, J. Stevens, S. J. Tingay, A. Vaccarella, M. Waterson, R. L. Webster, A. R. Whitney, A. Williams, C. Williams

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Abstract

The Murchison Wide-Field Array (MWA) is a low-frequency radio telescope, currently under construction, intended to search for the spectral signature of the epoch of reionization (EOR) and to probe the structure of the solar corona. Sited in western Australia, the full MWA will comprise 8192 dipoles grouped into 512 tiles and will be capable of imaging the sky south of 40° declination, from 80 MHz to 300 MHz with an instantaneous field of view that is tens of degrees wide and a resolution of a few arcminutes. A 32 station prototype of the MWA has been recently commissioned and a set of observations has been taken that exercise the whole acquisition and processing pipeline. We present Stokes /, Q, and U images from two ~4 hr integrations of a field 20° wide centered on Pictoris A. These images demonstrate the capacity and stability of a real-time calibration and imaging technique employing the weighted addition of warped snapshots to counter extreme wide-field imaging distortions.

Original language	English
Pages (from-to)	1353-1366
Number of pages	14
Journal	Publications of the Astronomical Society of the Pacific
Volume	122
Issue number	897
DOIs	https://doi.org/10.1086/657160
Publication status	Published - Nov 2010

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Ord, S. M., Mitchell, D. A., Wayth, R. B., Greenhill, L. J., Bernardi, G., Gleadow, S., Edgar, R. G., Clark, M. A., Allen, G., Arcus, W., Benkevitch, L., Bowman, J. D., Briggs, F. H., Bunton, J. D., Burns, S., Cappallo, R. J., Coles, W. A., Corey, B. E., DeSouza, L., ... Williams, C. (2010). Interferometric imaging with the 32 element murchison wide-field array. Publications of the Astronomical Society of the Pacific, 122(897), 1353-1366. https://doi.org/10.1086/657160

@article{06fbc8c81b454fb98ce2c12b26969749,

title = "Interferometric imaging with the 32 element murchison wide-field array",

abstract = "The Murchison Wide-Field Array (MWA) is a low-frequency radio telescope, currently under construction, intended to search for the spectral signature of the epoch of reionization (EOR) and to probe the structure of the solar corona. Sited in western Australia, the full MWA will comprise 8192 dipoles grouped into 512 tiles and will be capable of imaging the sky south of 40° declination, from 80 MHz to 300 MHz with an instantaneous field of view that is tens of degrees wide and a resolution of a few arcminutes. A 32 station prototype of the MWA has been recently commissioned and a set of observations has been taken that exercise the whole acquisition and processing pipeline. We present Stokes /, Q, and U images from two ~4 hr integrations of a field 20° wide centered on Pictoris A. These images demonstrate the capacity and stability of a real-time calibration and imaging technique employing the weighted addition of warped snapshots to counter extreme wide-field imaging distortions.",

author = "Ord, {S. M.} and Mitchell, {D. A.} and Wayth, {R. B.} and Greenhill, {L. J.} and G. Bernardi and S. Gleadow and Edgar, {R. G.} and Clark, {M. A.} and G. Allen and W. Arcus and L. Benkevitch and Bowman, {J. D.} and Briggs, {F. H.} and Bunton, {J. D.} and S. Burns and Cappallo, {R. J.} and Coles, {W. A.} and Corey, {B. E.} and L. DeSouza and Doeleman, {S. S.} and M. Derome and A. Deshpande and D. Emrich and R. Goeke and Gopalakrishna, {M. R.} and D. Herne and Hewitt, {J. N.} and Kamini, {P. A.} and Kaplan, {D. L.} and Kasper, {J. C.} and Kincaid, {B. B.} and J. Kocz and E. Kowald and E. Kratzenberg and D. Kumar and Lonsdale, {C. J.} and Lynch, {M. J.} and McWhirter, {S. R.} and S. Madhavi and M. Matejek and Morales, {M. F.} and E. Morgan and D. Oberoi and J. Pathikulangara and T. Prabu and Rogers, {A. E.E.} and A. Roshi and Salah, {J. E.} and A. Schinkel and Shankar, {N. Udaya} and Srivani, {K. S.} and J. Stevens and Tingay, {S. J.} and A. Vaccarella and M. Waterson and Webster, {R. L.} and Whitney, {A. R.} and A. Williams and C. Williams",

year = "2010",

month = nov,

doi = "10.1086/657160",

language = "English",

volume = "122",

pages = "1353--1366",

journal = "Publications of the Astronomical Society of the Pacific",

issn = "0004-6280",

publisher = "Institute of Physics Publishing",

number = "897",

}

Ord, SM, Mitchell, DA, Wayth, RB, Greenhill, LJ, Bernardi, G, Gleadow, S, Edgar, RG, Clark, MA, Allen, G, Arcus, W, Benkevitch, L, Bowman, JD, Briggs, FH, Bunton, JD, Burns, S, Cappallo, RJ, Coles, WA, Corey, BE, DeSouza, L, Doeleman, SS, Derome, M, Deshpande, A, Emrich, D, Goeke, R, Gopalakrishna, MR, Herne, D, Hewitt, JN, Kamini, PA, Kaplan, DL, Kasper, JC, Kincaid, BB, Kocz, J, Kowald, E, Kratzenberg, E, Kumar, D, Lonsdale, CJ, Lynch, MJ, McWhirter, SR, Madhavi, S, Matejek, M, Morales, MF, Morgan, E, Oberoi, D, Pathikulangara, J, Prabu, T, Rogers, AEE, Roshi, A, Salah, JE, Schinkel, A, Shankar, NU, Srivani, KS, Stevens, J, Tingay, SJ, Vaccarella, A, Waterson, M, Webster, RL, Whitney, AR, Williams, A & Williams, C 2010, 'Interferometric imaging with the 32 element murchison wide-field array', Publications of the Astronomical Society of the Pacific, vol. 122, no. 897, pp. 1353-1366. https://doi.org/10.1086/657160

TY - JOUR

T1 - Interferometric imaging with the 32 element murchison wide-field array

AU - Ord, S. M.

AU - Mitchell, D. A.

AU - Wayth, R. B.

AU - Greenhill, L. J.

AU - Bernardi, G.

AU - Gleadow, S.

AU - Edgar, R. G.

AU - Clark, M. A.

AU - Allen, G.

AU - Arcus, W.

AU - Benkevitch, L.

AU - Bowman, J. D.

AU - Briggs, F. H.

AU - Bunton, J. D.

AU - Burns, S.

AU - Cappallo, R. J.

AU - Coles, W. A.

AU - Corey, B. E.

AU - DeSouza, L.

AU - Doeleman, S. S.

AU - Derome, M.

AU - Deshpande, A.

AU - Emrich, D.

AU - Goeke, R.

AU - Gopalakrishna, M. R.

AU - Herne, D.

AU - Hewitt, J. N.

AU - Kamini, P. A.

AU - Kaplan, D. L.

AU - Kasper, J. C.

AU - Kincaid, B. B.

AU - Kocz, J.

AU - Kowald, E.

AU - Kratzenberg, E.

AU - Kumar, D.

AU - Lonsdale, C. J.

AU - Lynch, M. J.

AU - McWhirter, S. R.

AU - Madhavi, S.

AU - Matejek, M.

AU - Morales, M. F.

AU - Morgan, E.

AU - Oberoi, D.

AU - Pathikulangara, J.

AU - Prabu, T.

AU - Rogers, A. E.E.

AU - Roshi, A.

AU - Salah, J. E.

AU - Schinkel, A.

AU - Shankar, N. Udaya

AU - Srivani, K. S.

AU - Stevens, J.

AU - Tingay, S. J.

AU - Vaccarella, A.

AU - Waterson, M.

AU - Webster, R. L.

AU - Whitney, A. R.

AU - Williams, A.

AU - Williams, C.

PY - 2010/11

Y1 - 2010/11

N2 - The Murchison Wide-Field Array (MWA) is a low-frequency radio telescope, currently under construction, intended to search for the spectral signature of the epoch of reionization (EOR) and to probe the structure of the solar corona. Sited in western Australia, the full MWA will comprise 8192 dipoles grouped into 512 tiles and will be capable of imaging the sky south of 40° declination, from 80 MHz to 300 MHz with an instantaneous field of view that is tens of degrees wide and a resolution of a few arcminutes. A 32 station prototype of the MWA has been recently commissioned and a set of observations has been taken that exercise the whole acquisition and processing pipeline. We present Stokes /, Q, and U images from two ~4 hr integrations of a field 20° wide centered on Pictoris A. These images demonstrate the capacity and stability of a real-time calibration and imaging technique employing the weighted addition of warped snapshots to counter extreme wide-field imaging distortions.

AB - The Murchison Wide-Field Array (MWA) is a low-frequency radio telescope, currently under construction, intended to search for the spectral signature of the epoch of reionization (EOR) and to probe the structure of the solar corona. Sited in western Australia, the full MWA will comprise 8192 dipoles grouped into 512 tiles and will be capable of imaging the sky south of 40° declination, from 80 MHz to 300 MHz with an instantaneous field of view that is tens of degrees wide and a resolution of a few arcminutes. A 32 station prototype of the MWA has been recently commissioned and a set of observations has been taken that exercise the whole acquisition and processing pipeline. We present Stokes /, Q, and U images from two ~4 hr integrations of a field 20° wide centered on Pictoris A. These images demonstrate the capacity and stability of a real-time calibration and imaging technique employing the weighted addition of warped snapshots to counter extreme wide-field imaging distortions.

UR - http://www.scopus.com/inward/record.url?scp=78649887742&partnerID=8YFLogxK

U2 - 10.1086/657160

DO - 10.1086/657160

M3 - Article

SN - 0004-6280

VL - 122

SP - 1353

EP - 1366

JO - Publications of the Astronomical Society of the Pacific

JF - Publications of the Astronomical Society of the Pacific

IS - 897

ER -

Interferometric imaging with the 32 element murchison wide-field array

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