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Largest radio telescope in the southern hemisphere returns its first image

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Among the images returned by MeerKAT was this black hole ejecting hot gas into interstellar space.
MeerKAT
The MeerKAT First Light image of the sky, released today by Minister of Science and Technology, Naledi Pandor, shows unambiguously that MeerKAT is already the best radio telescope of its kind in the Southern Hemisphere. Array Release 1 (AR1) being celebrated today provides 16 of an eventual 64 dishes integrated into a working telescope array. It is the first significant scientific milestone achieved by MeerKAT, the radio telescope under construction in the Karoo that will eventually be integrated into the Square Kilometre Array (SKA).

In a small patch of sky covering less than 0.01 percent of the entire celestial sphere, the MeerKAT First Light image shows more than 1300 galaxies in the distant Universe, compared to 70 known in this location prior to MeerKAT. “Based on the results being shown today, we are confident that after all 64 dishes are in place, MeerKAT will be the world’s leading telescope of its kind until the advent of SKA,” according to Professor Justin Jonas, SKA South Africa Chief Technologist.

MeerKAT will consist of 64 receptors, each comprising a 13.5-metre diametre dish antenna, cryogenic coolers, receivers, digitiser, and other electronics. The commissioning of MeerKAT is done in phases to allow for verification of the system, early resolution of any technical issues, and initial science exploitation. Early science can be done with parts of the array as they are commissioned, even as construction continues. AR1 consists of 16 receptors, AR2 of 32 and AR3 of 64, expected to be in place by late 2017.

Dr Rob Adam, Project Director of SKA South Africa, says: “The launch of MeerKAT AR1 and its first results is a significant milestone for South Africa. Through MeerKAT, South Africa is playing a key role in the design and development of technology for the SKA. The South African team of more than 200 young scientists, engineers and technicians, in collaboration with industry, local and foreign universities and institutions, has developed the technologies and systems for MeerKAT. These include cutting edge telescope antennas and receivers, signal processing, timing, telescope management, computing and data storage systems, and algorithms for data processing.”

In May 2016, more than 150 researchers and students, two-thirds from South Africa, met in Stellenbosch to discuss and update the MeerKAT science programme. This will consist of already approved “large survey projects”, plus “open time” available for new projects. An engineering test image, produced with only 4 dishes, was made available just before that meeting.

“The scientists gathered at the May meeting were impressed to see what 4 MeerKAT dishes could do,” says Dr Fernando Camilo, SKA South Africa Chief Scientist. “They will be astonished at today’s exceptionally beautiful images, which demonstrate that MeerKAT has joined the big leagues of world radio astronomy”.

source: http://www.astronomy.com/news/2016/07/the-largest-radio-telescope-in-the-southern-hemisphere-returns-its-first-image



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