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Publications of the Astronomical Society of Australia

The Zadko Telescope: A Southern Hemisphere Telescope for Optical Transient Searches, Multi-Messenger Astronomy and Education

D. M. Coward A E , M. Todd B , T. P. Vaalsta A , M. Laas-Bourez D A , A. Klotz C D , A. Imerito A , L. Yan A , P. Luckas A , A. B. Fletcher A , M. G. Zadnik B , R. R. Burman A , D. G. Blair A , J. Zadko A , M. Boër D , P. Thierry C , E. J. Howell A , S. Gordon A , A. Ahmat A , J. A. Moore A and K. Frost A
+ Author Affiliations
- Author Affiliations

A School of Physics, M013, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia

B Department of Imaging and Applied Physics, Bldg 301, Curtin University of Technology, Kent St, Bentley, WA 6102, Australia

C CESR, Observatoire Midi-Pyrénées, CNRS, Université de Toulouse, BP 44346, F–31028 Toulouse Cedex 4, France

D Observatoire de Haute-Provence, F–04870 Saint Michel l'Observatoire, France

E Corresponding author. Email:

Publications of the Astronomical Society of Australia 27(3) 331-339
Submitted: 19 October 2009  Accepted: 9 June 2010   Published: 2 September 2010


The new 1 m f/4 fast-slew Zadko Telescope was installed in June 2008 about 70 km north of Perth, Western Australia. It is the only metre-class optical facility at this southern latitude between the east coast of Australia and South Africa, and can rapidly image optical transients at a longitude not monitored by other similar facilities. We report on first imaging tests of a pilot program of minor planet searches, and Target of Opportunity observations triggered by the Swift satellite. In 12 months, 6 gamma-ray burst afterglows were detected, with estimated magnitudes; two of them, GRB 090205 (z = 4.65) and GRB 090516 (z = 4.11), are among the most distant optical transients imaged by an Australian telescope. Many asteroids were observed in a systematic 3-month search. In September 2009, an automatic telescope control system was installed, which will be used to link the facility to a global robotic telescope network; future targets will include fast optical transients triggered by high-energy satellites, radio transient detections, and LIGO gravitational wave candidate events. We also outline the importance of the facility as a potential tool for education, training, and public outreach.

Keywords: instrumentation: miscellaneous — gamma rays: bursts — minor planets, asteroids — telescopes


D. M. Coward is supported by ARC grants DP 0877550, LP 0667494, and by the University of Western Australia (UWA). The ZT facility is managed by the School of Physics, UWA, the International Centre for Radio Astronomy Research (ICRAR), and the Australian International Gravitational Research Centre (AIGRC). We also acknowledge the Centre for Learning Technology (CLT) at UWA, and the Western Australian Department of Education and Training (DET), for supporting a science training and outreach program.


Abadie, J., et al. 2010, LSC Document LIGO-P0900125, e-print (arxiv:1003.2480v2 [astro-ph.HE]),

Abbott, B., et al. 2007, PhRvD, 76, 062003

Andor Technology PLC, 2007, iKon-L DW436-BV Technical Document (Belfast, N. Ireland: Andor Technology PLC),

Barbieri, C. 2007, Fundamentals of Astronomy (Boca Raton FL, USA: CRC Press, Taylor & Francis), 292

Bertin, E., &  Arnouts, S. 1996, A&AS, 117, 393
CrossRef |

Bourez-Laas, M., Vachier, F., Klotz, A., Damerdji, Y., &  Boër, M. 2008, Proc. SPIE, 7019, 701918

Coward, D. M., Guetta, D., Burman, R. R., &  Imerito, A. 2008, MNRAS, 386, 111
CrossRef |

Fox, D. B., et al. 2005, Nature, 437, 845
CrossRef |

Johnston, S., et al. 2008, ExA, 22, 151

Klotz, A., Boër, M., Eysseric, J., Damerdji, Y., Laas-Bourez, M., Pollas, C., &  Vachier, F. 2008a, PASP, 120, 1298

Klotz, A., Vachier, F., &  Boër, M. 2008b, AN, 329, 275

Klotz, A., Gendre, B., Atteia, J. L., Boër, M., Coward, D. M., &  Imerito, A. C. 2009, ApJ, 697, L18
CrossRef |

McLean, I. S. 2008, Electronic Imaging in Astronomy: Detectors and Instrumentation (2nd ed; Chichester, UK: Springer-Praxis Publ. Ltd.), 46

Saha, A., Dolphin, A. E., Thim, F., &  Whitmore, B. 2005, PASP, 117, 37
CrossRef |

Sathyaprakash, B. S., &  Schutz, B. F. 2009

Zombeck, M. V. 1990, Handbook of Space Astronomy & Astrophysics (2nd ed; Cambridge, UK: Cambridge Univ. Press), 100

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