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28 January 2021 | Story Igno van Niekerk | Photo Supplied
Pictured from the left: Lucas Erasmus from the Department of Physics, Piet le Roux from the Astronomical Society of SA – Bloemfontein, Quinton Kaplan from the Department of Physics, Thinus van der Merwe from the Astronomical Society of SA – Bloemfontein. Front: Prof Matie Hoffman

In his book, The World is Flat, Thomas Friedman mentions how at first countries, then companies, and eventually communities went global. In true flat-world fashion, a combined team of the University of the Free State (UFS) and the Astronomical Society of South Africa – led by Prof Matie Hoffman, Associate Professor in the Department of Physics – participated in a once-in-a-lifetime event with their counterparts from the Ellinogermaniki Agogi School and the Skinakas Observatory in Greece.

On 21 December 2020, Earth was treated to the Jupiter-Saturn conjunction, when the two planets were only 0.1 degrees apart in the sky. Although conjunctions are regular phenomena, NASA mentions that the great conjunction of Jupiter and Saturn in 2020 was the closest since 1623 and the closest observable since 1226! A pinkie finger at arm’s length could cover both planets – although they were still millions of kilometres apart in space.

Planning started months ahead of the event, with the Ellinogermaniki Agogi Observatory in Greece and the Boyden Observatory in Bloemfontein chosen as the two selected vantage points. From both the Southern and Northern Hemisphere, the conjunction would be broadcast live on YouTube. As with any other technical project on an international scale, challenges arose. For example, in the Northern Hemisphere, it was already dark at 17:45 while the South African astronomers were still basking in sunlight until after 19:00. The conjunction would only be visible from South Africa after 19:30, almost two hours after it would be visible in Athens. The time was well used, with the event including a word of welcome by the Consul General of Greece in South Africa, Ioannis Chatzantonakis, presentations on Saturn and Jupiter, as well as a virtual tour of the Boyden Observatory, emphasising its connection with Greece through its first Director, Stefanos Paraskevopoulos. 

On Saturday, 19 December, the teams ‘gathered’ on opposite sides of planet Earth to do a dry run. One could sense the urgency and tension as both teams realised that they would have a huge captive audience on YouTube, and plans had to be made in case of connectivity challenges and if the weather did not allow the conjunction. As preparations progressed, Prof Hoffman was talking to his Greek counterparts and was simultaneously walking around with his laptop to share the landscape and activities via his webcam with colleagues in Greece. 

Monday 21 December 2020 – the weather prediction was correct. Clouds covered the Free State sky and scattered raindrops started to fall. Revert to Plan B. A recording made on Saturday evening was shared via the YouTube link, while a live feed of the conjunction from elsewhere in South Africa was arranged. From both sides of the world, information was shared about the history of the venues, as well as the marvel of what was happening in space. Fortunately, expert planetary photographer Clyde Foster was able to share a live feed just after 19:30 from the observatory at his home in Centurion, Gauteng. Those attending the event where visuals and speakers were together on one screen – yet thousands of kilometres apart – watching an event in outer space, will indeed agree with Thomas Friedman: the world is flat. The live-stream event of the conjunction was a catalyst that will result in continued collaboration between the UFS and colleagues in Greece in the field of astronomy. 

By the time of this writing, the livestream has reached more than 50 000 people.


News Archive

Ground-breaking project scores Renewable Energy Award
2017-10-29

Description: ' 000 University Estates award Tags: University Estates award 

Marcel Theron, Former President: HEFMA; Nico van Rensburg, Senior Director:
University Estates (UFS); and Maureen Khati, Project Manager: Facilities
Planning (UFS) attending the HEFMA awards ceremony in Pretoria.
Photo: Supplied

University Estates at the University of the Free State (UFS) were recently awarded for their amazing initiative to install and operate photovoltaic (PV) and greywater systems on all three of its campuses. They were awarded by the Higher Education Facilities Management Association of Southern Africa (HEFMA), an association of facilities managers operating in the higher-education sector in the Southern African region. All universities and universities of technology in the country form part of this association, which promotes excellence in the planning, construction, maintenance, operations, and administration of educational facilities.

Nico van Rensburg, Senior Director of University Estates, says, “I want to thank HEFMA for this amazing award which motivates for much more and also opens up the doors for so many more opportunities.”

Solar and greywater systems installed at various buildings

In December 2016, 26 solar-driven LED street-light poles and a greywater system were installed at the Legae Residence on the South Campus. Greywater is made up of bath, shower, and bathroom sink water. The water is reused for toilet flushing, as well as for irrigation purposes.

On the Bloemfontein and Qwaqwa Campuses, the computer laboratories as well as the Thakaneng Bridge Student Centre and the expected Afromontane Research Centre have freestanding solar solutions mounted on their roofs. These systems are designed to operate independently of the power grid (Eskom) during sunlight hours when the PV solar panels are heated by the sun.

Teamwork equals ground-breaking results

“This was truly a team effort with a variety of role players who contributed,” says Van Rensburg. He believes that higher education can do more to make use of other environmentally sustainable initiatives, and to go beyond just erecting and renovating buildings.

The UFS executive management is also extremely proud of the team that were involved in the project. Prof Nicky Morgan, former Vice-Rector: Operations, says, “It’s been extraordinary what we could achieve at all three campuses with such a small team.” Nadeem Gafieldien, Director: Property Services at Stellenbosch University, showered the UFS with praise. “This is truly ground-breaking for Higher Education (HE) and you are truly leaders in these renewable energy projects in the HE sector.” He says we need to demonstrate to other institutions in the HE sector that this is the future and that it makes the institutions both environmentally and financially sustainable.

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