http://www.sciencewa.net.au/topics/space/item/1439-ska-telescope-to-be-shared
AUSTRALIA, New Zealand and South Africa will share of the Square Kilometre Array (SKA) project, the world’s most powerful and sensitive radio telescope, the International SKA Organisation announced today.
The majority of SKA dishes in Phase 1 will be built in South Africa, combined with MeerKAT.
Further SKA dishes will be added to the ASKAP array in Australia. All the dishes and the mid frequency aperture arrays for Phase II of the SKA will be built in Southern Africa while the low frequency aperture array antennas for Phase I and II will be built in Australia / New Zealand.
The ASKAP and MeerKAT precursor dishes will be incorporated into Phase I of the SKA which will deliver more science and will maximise on investments already made by both Australia and South Africa.
The majority of the SKA organisation were in favour of a dual-site implementation model for SKA.
The members noted the report from the SKA Site Advisory Committee that both sites were well suited to hosting the SKA and that the report provided justification for the relative advantages and disadvantages of both locations, but that they identified Southern Africa as the preferred site.
The members also received advice from the working group set up to look at dual site options.
The distribution of the three antenna types across the two countries will allow the SKA to cover 70MHz to 10GHz frequencies continuously.
Director of Perth-based International Centre for Radio Astronomy Research (ICRAR), Peter Quinn, says that the decision would reinforce the project’s global cooperative focus.
“As an International centre, we’re eager to continue our work with colleagues in Africa and the rest of the world to build the SKA and use it to explore the Universe in 10,000 times more detail than ever before,” Peter Quinn says.
The long awaited announcement from the International SKA Organisation’s eight member countries comes after a report on the feasibility of the split by a specially formed Site Options Working Group (SOWG).
Factors taken into account during the site selection process included levels of radio frequency interference, the long term sustainability of a radio quiet zone, the physical characteristics of the site, long distance data network connectivity, the operating and infrastructure costs as well as the political and working environment.
South Africa—with the backing of eight other African countries—vied for the project against a joint Australia-New Zealand bid to host the €1.5-billion ($2-billion) telescope.
The two countries already have precursory projects underway on their respective sites, the Australian Square Kilometre Array Pathfinder (ASKAP) and Murchison Wide Field array—the only low-frequency precursor to the SKA—and South Africa’s Karoo Array Telescope (MeerKAT), both which will act as important test-beds for SKA technology.