| Autor: |
John Reynolds, Hayley Bignall, Anastasios Tzioumis, E. S. Lensson, J. Marvil, John D. Bunton, Emil Lenc, C. Jacka, J. Tuthill, Aaron Chippendale, Ray P. Norris, D. Brodrick, P. Axtens, Keith W. Bannister, M. Shields, S. Mackay, Paolo Serra, S. W. Amy, A. Ng, Matthew Whiting, Ilana Feain, Naomi McClure-Griffiths, T. Bateman, R. G. Gough, E. R. Troup, Wasim Raja, Robert J. Sault, S. Hoyle, Sarah Pearce, Maxim Voronkov, Aidan Hotan, M. Storey, Douglas B. Hayman, David DeBoer, Douglas C.-J. Bock, J. C. Guzman, K. Jeganathan, Daniel A. Mitchell, A. Macleod, A. E. T. Schinckel, James R. Allison, W. Cheng, R. M. Wark, S. Neuhold, R. Bolton, S. Hegarty, B. Turner, Timothy W. Shimwell, C. A. Jackson, Lisa Harvey-Smith, Martin Bell, Stuart G. Hay, Tobias Westmeier, Carol D. Wilson, M. Marquarding, A. Brown, Tim J. Cornwell, B. Humphreys, I. Heywood, M. Leach, Grant Hampson, T. Wilson, N. Gupta, David McConnell, L. Ball, R. Y. Qiao, Philip G. Edwards, Balthasar T. Indermuehle, J. Joseph, Attila Popping, Baerbel Koribalski, S. Jackson, P. Mirtschin |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Publications of the Astronomical Society of Australia, 33, e042 |
| Popis: |
We describe the performance of the Boolardy Engineering Test Array (BETA), the prototype for the Australian Square Kilometre Array Pathfinder telescope ASKAP. BETA is the first aperture synthesis radio telescope to use phased array feed technology, giving it the ability to electronically form up to nine dual-polarization beams. We report the methods developed for forming and measuring the beams, and the adaptations that have been made to the traditional calibration and imaging procedures in order to allow BETA to function as a multi-beam aperture synthesis telescope. We describe the commissioning of the instrument and present details of BETA's performance: sensitivity, beam characteristics, polarimetric properties and image quality. We summarise the astronomical science that it has produced and draw lessons from operating BETA that will be relevant to the commissioning and operation of the final ASKAP telescope.
Accepted for publication in PASA |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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