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31 January 2023 | Story Leonie Bolleurs | Photo Leonie Bolleurs
UFS unveiled new spectrograph
Assisting Prof Richard Gray with the installation of the spectrograph and the polarimeter were the Electronics and Instrumentation departments at both the UFS and the ASU. Left from the spectrograph, are from the left, front: Innes Basson, Head of the Department of Electronics and Instrumentation, Prof Pieter Meintjes, Senior Professor in the Department of Physics, Mark Jackson, Department of Electronics and Instrumentation, Hélène Szegedi, Lecturer in the Department of Physics, and Prof Richard Gray. At the right, from the spectrograph, front, are Natali Matchelt, master’s student, Izak van der Westhuizen, Lecturer in the Department of Physics; Barend Crous, Department of Electronics and Instrumentation; middle: Wian Smit, master’s student, Joleen Barnard, master’s student; back: Kobus Krüger, Department of Electronics and Instrumentation, Henri Roodt, Department of Electronics and Instrumentation; and Dr Hendrik van Heerden, Department of Physics.

The University of the Free State (UFS) is gearing up to be a leading academic institution in astronomical research. The institution successfully mounted a spectrograph with a polarimeter to the Boyden Observatory 1,5-m telescope that will provide scientists with visual access to both the Northern and Southern Hemispheres. 

The instrument, which can be accessed from Boyden, an astronomical research observatory and science education centre a few kilometres outside Bloemfontein, will allow researchers such as the Astrophysics Group at the UFS to do simultaneous polarimetry and spectroscopy of astronomical sources. This is vital for the research they are working on.

Mounting the spectrograph to the telescope and installing the polarimeter completed the upgrade of the 1,5-m telescope and is a leap forward for the astrophysics group at the UFS. The upgraded telescope with the spectropolarimeter, with a valued cost of R1.5 million, will also provide unique opportunities for collaborative research between the Astrophysics Groups at the UFS and researchers from the Appalachian State University (ASU). This adds greatly to the astrophysics research capacity at the university.
 
Prof Richard Gray, who 2019 started with the development of the astronomical spectrograph for the UFS Department of Physics, is a world-renowned expert in stellar spectroscopy, from the Department of Physics and Astronomy at ASU in North Carolina in the US. He was mainly responsible for the development and building of the instrument. 

Prof Pieter Meintjes, Senior Professor from the UFS Department of Physics, describes the moment that installation was completed as a feeling of enormous relief. “It took many hours of hard work, planning and testing to marry the 90-year 1,5-m telescope with the new sophisticated instrument,” he says. 

Adding value to graduate programme

Besides the development and installation of the spectrograph, Prof Gray also designed and built a polarimeter which can be integrated with the spectrograph. When placed inside the spectrograph, this piece of equipment transforms the spectrograph into a spectropolarimeter, giving it additional functionality. “This allows us, for example, to detect and analyse polarised light. It enables us to study the effect of magnetic fields in astronomical sources which introduce various polarisation signatures that can be detected with the polarimeter,” explains Prof Gray.

“I am fascinated by the polarimetric capabilities that we never had before. It is a great step forward,” remarks Prof Meintjes. 

“The Department of Electronics and Instrumentation at the UFS played an enormous role in the building of several components of the instrument that Prof Gray designed, as well as getting the 1.5-m telescope research ready so that the completed instrument could be mounted to the telescope”, says Prof Meintjes

He envisages that the research instrument will be ready for research purposes by March this year. Up till then researchers, graduates, and third-year students will have the opportunity to spend time on the spectrograph to familiarise themselves with it.

polarimeter
Prof Richard Gray posing with the polarimeter. With him is Prof Pieter Meintjes. (Photo: Leonie Bolleurs)


“Once installation is finalised, the UFS will be the only academic institution in South Africa with access to a 1.5-m telescope paired with a spectrograph. This gives us an edge in terms of our astrophysics programme and the training we provide our students. It also adds so much value to our graduate programme,” he says.

New instrument provides much flexibility

The spectrograph offers Prof Meintjes many possibilities for his research, and he is eager to put the instrument to use. To study binary systems as well as the jets of Active Galactic Nuclei (AGN), you need a spectrograph, preferably with polarimetric capabilities. It can also be applied to finding elements at the surface levels of stars so that their chemical composition can be determined.

“In the past, we needed to send our researchers to Sutherland and they were never guaranteed clear skies. Having this facility gives us so much flexibility,” he says.

 

Tsebo Matsoso and Siphephelo Ndlovu

Prof Brian van Soelen from the Department of Physics will be a key user of the spectrograph for his research. He is also playing an important role in terms of postgraduate training and research where the spectrograph is applied. 

Photo: Mart-Mari Duvenhage

  

 


The polarimeter converts the spectrograph to a spectropolarimeter. This instrument, which is mounted on a telescope (in the case of the UFS, it is mounted on the Boyden 1,5-m telescope) enables the user to detect whether radiation from  astronomical objects are polarised and to analyse the level of polarisation of the  light. Scientists can then, for instance, study the effect of magnetic fields in astronomical sources, which introduce various polarisation signatures (typically with a characteristic  level of polarisation).

News Archive

During 2011: Prestige Scholars Programme (PSP)
2011-12-01

The University has designed the Vice-Chancellor’s Prestige Scholars Programme (PSP) to promote and support the intellectual breadth and depth required of young scholars to pose questions and generate knowledge in their disciplines and hence to occupy the vanguards of contemporary intellectual enquiry. The programme specifically targets members of the academic staff who are near completion, or have newly completed, their doctoral studies.

The goal is to select no more than 100 of the most promising young scholars and to make substantial investments in their development towards becoming full professors. A tailored, intensive programme of support is designated that combines international placement working alongside leading scholars in the discipline of the prestige scholar, with intensive mentorship and support from within the university.

 Description: 2011 PSP_Thuthuka  Tags: 2011 PSP_Thuthuka

Elite young scholars on the Vice-Chancellor’s Prestige Scholars Programme generated R1,2 million in National Research Foundation Thuthuka and Blue Skies funding in 2011 alone. Dr Katinka de Wet in the Department of Sociology was awarded Blue Skies funding for her work on the Hybrid Identity of the HIV/Aids patient. Thuthuka Grant holders Drs Cilliers van den Berg, Olihile Sebolai, Dirk Opperman and Diaan van der Westhuizen work in the fields of German and Afrikaans trauma literature, microbiology, structural and evolutionary biology, and architecture, respectively. This broad disciplinary range typifies the depth and extraordinary range of scholarship present among junior academics at the UFS.


 Description: 2011 PSP_Liza Coetsee Tags: 2011 PSP_Liza Coetsee

Dr Liza Coetsee, a Y2-rated physicist, is the first of the Vice-Chancellor’s elite cohort of Prestige Scholars to submit for National Research Foundation rating. Dr Coetsee works on the latest of the Nanotechnology Surface Science systems housed in our Department of Physics. As Prestige Scholar, Dr Coetsee conducts research on phosphor solar cells. Her aim is to establish a new Phosphor Solar Cell field at the University of the Free State with Proff. Hendrik Swart and Koos Terblans. As a member of the Prestige Scholar Programme, Dr Coetsee will work in collaboration both with colleagues from the Nelson Mandela Metropolitan University and Prof. Eray Aydil from the University of Minnesota and Editor-in-Chief of the Journal of Vacuum Science & Technology.


 Description: 2011 PSP_Olihile Sebolai Tags: 2011 PSP_Olihile Sebolai

Dr Olihile Sebolai is one of the 2 Vice-Chancellor’s elite Prestige Scholars and a microbiologist. In 2011, Dr Sebolai was awarded a Thuthuka Grant for his research on the yeast pathogen Cryptococcus neoformans, the cause of life-threatening Aids-defining illnesses such as meningitis. Dr Sebolai considers how cryptococcal lipids mediate infectious processes leading to illness. An understanding of these cellular processes will offer hope for future drug development to combat the scourge of cryptococcal meningitis, annually causing the death of over half a million people in Sub-Saharan Africa. Dr Sebolai is also interested in mapping the prevalence and distribution pattern of cryptococcal meningitis in the Free State. This, in turn, will assist health authorities to manage current infections and plan appropriately for potential outbreaks. The Prestige Scholars Programme, with the assistance of the National Research Foundation, will afford Dr Sebolai the opportunity to pursue his research in laboratories in the United States and India in 2012 and 2013.


 Description: 2011 PSP_Louis Holtzhausen Tags: 2011 PSP_Louis Holtzhausen

Dr Louis Holtzhausen, member of the Vice-Chancellor’s Prestige Scholars Programme, has been named by the South African Sports Confederation and Olympic Committee (SASCOC) as team doctor for Team South Africa during the All Africa Games, the largest sports event in Africa. National teams from African countries participated in 23 sports events. As an esteemed South African academic in sports medicine Dr Holtzhausens’ participation was an extension of the work already being done under his supervision at the UFS’s Sports Performance Unit. Many of the athletes who prepared at the Unit were also part of the team. Elite athletes’ illness and injury profiles are one of Dr Holtzhausens’ research focus areas. The exposure to this group in competition was of great value in the identification and development of research niche areas.


 Description: 2011 PSP_ Chantel Swart Tags: 2011 PSP_ Chantel Swart

The South African Society for Microbiology awarded Dr Chantel Swart-Pistor, a Prestige Scholar on the Vice-Chancellor’s elite programme, the top prize for her PhD during a recent gala dinner in Cape Town. Dr Swart-Pistor accomplished a breakthrough in the field of nanotechnology with The influence of mitochondrial inhibitors on zoospore and ascospore development. Her supervisor, Prof. Lodewyk Kock and co-supervisors, Dr Carolina Pohl and Prof. Pieter van Wyk, also stressed the important collaboration with Proff. Hendrik Swart (Physics) and Pieter van Wyk (Centre for Microscopy), which made Dr Swart-Pistor’s work possible. She has presented her work in Beijing (Medichem 2011) and Philadelphia (Biotechnology-2011). She has been invited to return to China in 2012.


 Description: 2011 PSP_ Lizette Erasmus Tags: 2011 PSP_ Lizette Erasmus

Dr Lizette Erasmus, scientific chemist and one of the Vice-Chancellor’s Prestige Scholars, has just returned from a three-month-long research visit to Prof. Hans Niemantsverdriet at the Technical University of Eindhoven in The Netherlands and the University of California, Davis. Dr Erasmus specialises in heterogeneous catalysis. Her visit to Prof. Niemantsverdriet, one of the global experts in the field of surface science, served to round of existing research. In California, Dr Erasmus visited her mentor, Prof. Bruce C. Gates, as part of the objectives of the Rector’s programme for the internationalisation of young researchers. Prof. Gates, an expert in catalysis, could contribute to Dr Erasmus’ research on the characterisation of heterogeneous catalysis and catalytic reactions. In exchange, her expertise in organometallic synthesis added value to Prof. Gates’ existing research. Their continued collaboration gave availed them of the opportunity for interdisciplinary interaction between engineering (Prof. Gates’ speciality) and chemistry, and promises to contribute to increased collaboration between the two universities in future.


 Description: 2011 PSP_Dirk Opperman Tags: 2011 PSP_Dirk Opperman

Dr Dirk Opperman, specialist in structural and evolutionary biology and National Research Foundation Thuthuka Grant holder, joined the Vice-Chancellor’s Prestige Scholars Programme after his postdoctoral work at the Max Planck Institute (KOFO) in Germany. Dr Opperman is the recipient of institutional seed funding to establish a protein crystallisation unit, which in turn led to the donation in 2011 of a multi-million Rand X-ray diffractometer¬ from the University of the Western Cape to complement his existing access to international synchrotrons. Dr Opperman is spending part of 2011 at the University of Exeter (UK) to further his research into the three-dimensional structures of specific enzymes and their trajectories of evolution to specific functions.


 Description: 2011 PSP_Abiodun Ogundeji Tags: 2011 PSP_Abiodun Ogundeji

Abiodun Ogundeji is a member of the Vice-Chancellor's Prestige Scholars Programme. Abiodun's work was recently recognised when he and his co-authors received an award for the best contributed paper at the 49th annual conference of the Agricultural Economics Association of South Africa on the topic, Impact of climate change on planning and dealing with flood disasters in South Africa: A case study of Soweto on Sea. The paper was co-authored by Prof. Giel Viljoen from our Department of Agricultural Economics and Herman Booysen, as well as Gawie du T. de Villiers, Research Associates in the Department of Geography. Abiodun is currently conducting invaluable research on the quantification of the economic value of climate change impacts and the benefits and costs of adaptation in South Africa.

 

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