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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

UFS launches projects to assist communities and current students
2011-03-16

Prof. Jonathan Jansen, UFS Vice-Chancellor and Rector and Mr Rudi Buys, Dean: Student Affairs, with learners at the  Bloemfontein-Oos Intermediary School.
Photo: Stephen Collett

The University of the Free State (UFS) has launched four exciting projects set out to improve the circumstances of its current and prospective students. These include a project that will honour dedicated and influential educators.

These community service projects in the starting blocks are: the UFS Schools Partnership Project, Extreme Make-over Project, Great Teachers Project and the No Student Hungry Campaign.
 
The Schools Partnership Project aims to support 21 schools across the Free State in helping them to become top achievers in the next three to five years. The schools involved were selected last year, after which the groundwork for the project was finalised. Although it mainly focuses on improving scholars' results in mathematics, accounting, physical sciences and English, it is also custom-designed according to the specific needs of the school, as indicated by the respective governing bodies beforehand. As a bonus, scholars of the schools involved will be given an opportunity to be introduced to student life; something Dr Choice Makhetha, UFS Vice-Rector: External Relations (acting), claimed to be of great importance. “We will invite Grade 10 to 12 learners to winter and summer schools being presented at the university. We will connect learners with students (one student adopts one learner for the day) for them to experience campus life. Grade 12 learners will also receive an invitation to the May 2011 graduation ceremony,” Dr Makhetha said.
 
Adding to the university's involvement at schools on local level, the newly upgraded Bloemfontein-Oos Intermediary School with its 112 UFS-sponsored tables will officially be revealed by the end of April. Although this school's upgrade showcases the power of partnerships, it is of special importance to the university, as it also marks the first school to receive an extreme make-over as part of the 'Extreme Make-over for Schools Project'. This project, in conjunction with the local business community, university staff and students, the community, the Department of Basic Education and SIFE (Students in Free Enterprise), is considered to be a flagship project of the Vice-Chancellor and Rector, Prof. Jonathan Jansen. Part of the project’s agreement includes visits from a group of about 100 students representing campus initiatives such as the UFS’s Kovscom, Rag and SIFE, which will contribute to the improvement of the schools' resources within a period of 10 – 15 weekends. “We invite support from all corners. South Africa has a business community committed to improving the social circumstances of its community and we plead that they also come to the rescue of the Bloemfontein-Oos Intermediary School,” said Dr Makhetha.
 
By spreading a 'can do' attitude, the UFS aims to honour noble and remarkable teachers across the country by means of its 'Great teacher's project'. Through the project, fellow citizens are encouraged to submit their stories on their former or current teachers’ dedication and their positive impact which are often overlooked. The panel of seasoned education scholars and practitioners will select the top 500 stories based on the stories' clarity, distinctiveness, plausibility and affectability, which will be perpetuated in a book called 'Great Teachers', to be released at the end of this year. Proceeds are destined to serve as bursaries for students who wish to pursue a career in education. According to Prof. Jansen the ideal teacher is: “Somebody who was among, but stood out above, their colleagues, a person who made a lasting impact long after the details of subject matter content of examination preparation were forgotten.”
 
Regardless of this exceptional effort of supporting schools across the province, the UFS remains committed to its students and their social welfare by means of the 'No student hungry' campaign. This project provides financially challenged students the opportunity to purchase food from the Thakaneng Bridge on the Main Campus in Bloemfontein by using their student cards at two selected kiosks serving balanced meals. The project, which is under the guardianship of Ms Grace Jansen and Dr Carin Buys, relies solely on several fund-raising projects across the country. These women are the respective spouses of the Rector and Dean: Student Affairs, Mr Rudi Buys. According to Ms Jansen this initiative was proposed after UFS staff reported that many students were struggling to concentrate on their studies due to hunger pangs. Although the campaign recognizes students with strong academic records, it doesn't overlook those who need a food bursary which might result in them dropping out. Ms Jansen said as the external funds gathered increase, so will the amount of students being supported by the project. “The plan is to continue until the fate of hungry students had come to an end,” she said.
 

Media Release
14 March 2011
Issued by: Lacea Loader
Director: Strategic Communication
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: news@ufs.ac.za

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