SKA-Mid Commissioning Scientists

At the SKAO we are coordinating a global effort to deliver the next generation of radio telescopes. Headquartered in the UK, with telescope sites in Australia and South Africa, the SKAO will be one observatory operating two telescopes, an endeavour spanning three continents. The SKAO became an intergovernmental organisation in 2021.

The two facilities cover different frequency ranges: SKA-Mid (350 – 15400 MHz) will be an array of dish antennas located in South Africa, while SKA-Low (50 – 350 MHz) will use aperture array technology and will be constructed in Australia on Wajarri Yamaji country.

Construction activities for the SKAO's telescopes started in 2021, along with a ramping up of SKAO staff in Australia and South Africa. Testing of the first array assembly for SKA-Mid with four dishes is underway. It is expected that the transition from the Construction Phase to the Operations Phase will happen around 2030.

SKAO Operations in South Africa will be conducted in partnership with the South African Radio Astronomy Observatory (SARAO). The Observatory will also partner closely with a global network of SKA Regional Centres through which astronomers will access science data products and a suite of tools and resources to further analyse the SKA telescopes' data.

SKA-Mid is being built in the Karoo region of the Northern Cape.

For more information on the SKA project visit https://www.skao.int/

This is a unique opportunity for talented and motivated radio astronomers to play major roles in the scientific commissioning of SKA-Mid, the world’s largest mid-frequency radio telescope.

Appointees will take responsibility for specific technical areas, working under the direction of the Lead Commissioning Scientist, who will act as their functional and line manager.

These roles are based in Cape Town, South Africa.

There will be a requirement for international travel, particularly to the SKAO Headquarters at Jodrell Bank. There will also be a requirement for occasional travel to the SKAO Engineering Operations Centre in Klerefontein, and to the telescope site.

SKAO is committed to providing an inclusive and flexible working environment, meeting the requests of our Colleagues whilst also fulfilling the needs and objectives of the Observatory.We are open to discussing flexible working opportunities with these roles being offered on a full-time, part-time or job share basis. Please raise your preference in your application.

This role requires the post holder to work across different time zones and, in line with SKAO policy, flexible working hours will be supported in agreement with the line manager.

Research and Career Progression:

These are fixed-term positions, initially until the end of October 2030but with a potential for extension depending on the SKA-Mid construction schedule. The post holders will have the opportunity to apply for permanent positions in Science Operations as these become available. Secondment or leave of absence from the post holder’s current institution for the duration of the construction phase may also be possible, subject to negotiation.

The appointees will be encouraged to carry out research in astronomy or astronomical instrumentation at a level commensurate with the requirements of the post and in particular to exploit early opportunities with the SKA. Appropriate support, including conference travel, will be provided.

The SKAO is seeking to appoint skilled and motivated radio astronomers to plan and execute the scientific commissioning of the SKA-Mid array. The postholders will join a small group of commissioning astronomers based in Cape Town, South Africa. The primary tasks of the group are:

• Take responsibility for science commissioning, i.e. planning, execution and analysis of test observations on the array. The group works closely with the System Science Group based at GHQ (Jodrell Bank), which has oversight of commissioning of both SKA-Mid and SKA-Low.
• Collaborate closely with engineering (hardware and software) groups involved in construction to verify aspects of the system and to identify and correct faults. There will be a particularly close interaction with the Assembly, Integration and Verification (AIV) Group, also based in Cape Town.
• Support the AIV group to verify the top-level engineering requirements of the array.
• Maintain a close interaction with the Science Operations Group, in particular to support Science Verification.

There may also be opportunities to work with SARAO and MPIfR on the commissioning of Extended MeerKAT, which will eventually be integrated with SKA-Mid.

Five members of the group, including two senior scientists, are already in post. Currently up to two additional positions are available, with common requirements, as follows. One of these positions is specifically targeted to support commissioning the beam-formed mode and pulsar timing.

The appointees will be active radio astronomers with the following qualifications. Note that we consider experience relative to opportunity.

• A PhD (or equivalent) in astronomy or physics
• Substantial experience in observational radio astronomy.
• A strong understanding of radio astronomical techniques and demonstrated ability to reduce and interpret data from radio telescopes.
• A good understanding of the science enabled by the SKA.
• A demonstrable ability to analyse complex, system-level problems.
• Demonstrated experience of working in a small team, contributing constructively to an inclusive and high performing team culture.

• Experience with a (radio) observatory environment, such as construction, commissioning or operations
• A proven track record in commissioning of radio telescopes (hardware or software), including test, scripting and debugging experience.
• A background in mid-frequency interferometry and/or non-imaging (beam-forming) applications such as pulsar search and timing.
• Experience of remote working with teams across multiple time zones.
• Proficiency in written documentation, particularly test and problem reporting.

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