Paul Wild Observatory at Narrabri Ron Ekers 26

Paul Wild Observatory at Narrabri Ron Ekers 26 Sep 2017 CSIRO ASTRONOMY AND SPACE SCIENCE

Solar Heliograph at Narrabri 1967 Paul Wild • $563, 000 US Ford Foundation • $513, 000 Australian Commonwealth Government 2 | 50 th anniversary of the Narrabri site, Sep 2017 50

Narrabri Opening 22 Sep 1967 John Gorton PM 1968 -1971 3 | 50 th anniversary of the Narrabri site, Sep 2017

Narrabri or Culgoora? U. Sydney – CSIRO Paul Wild Hanbury-Brown 1963 4 | 50 th anniversary of the Narrabri site, Sep 2017 1967

Solar Heliograph 1967 -1984 • 1 dual pol 2 D image per second • 60 x 60 images • J 2 synthesis § Left circular(red) § Right circular (blue) • Solved the problem of the evolution of type II and III solar bursts • New picture for type IV bursts 5 | 50 th anniversary of the Narrabri site, Sep 2017

Australian Synthesis Telescope (AST) • Proposed 1975, 1978 • Parkes 64 m • 4 -6 x 25 m dishes, 1. 2 km baselines • $6 m • Not funded • not sufficiently ambitious! 6 | 50 th anniversary of the Narrabri site, Sep 2017

Australia Telescope Visibility • Opened by the Prime Minister • Sep 1988 at a cost of $50 m • Prestige • High impact showpiece for Australian science and technology • 85% local content • Impressive facility A new era in Australian scientific research. Bob Hawke, Prime Minister 8 | 50 th anniversary of the Narrabri site, Sep 2017 • International credibility

Australia Telescope Opening 9 | 50 th anniversary of the Narrabri site, Sep 2017

Original $50 Australian bill (1973) 50 th anniversary of the Narrabri site, Sep 2017 10

Centaurus A ATCA Mosaic • • 1. 4 GHz continuum full polarization 4 x 750 m array configuration 406 pointings, hexagonal grid FOV 45 deg 2 Angular resolution ~45’’ ~0. 26 m. Jy/beam (0. 1 K) 600 kpc Ilana Feain, Ap. J 740, 17 (2011) 11 | 50 th anniversary of the Narrabri site, Sep 2017

12 | 50 th anniversary of the Narrabri site, Sep 2017

50 th anniv ersar y of the Narra bri 13

Thank you 14 | 50 th anniversary of the Narrabri site, Sep 2017