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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

Service learning teaching strategy essential for the infusion of graduate attributes
2017-01-02

Description: Dr Pulane Pitso Tags: Dr Pulane Pitso 

Dr Pulane Pitso, Director: Institutional Performance
Monitoring within Performance Monitoring and Evaluation
Branch in the Department of the Premier, Free State
Provincial Government (FSPG).
Photo: Rulanzen Martin

“Public service delivery is not only about ‘government’s sector end products’, but is also fundamentally related to the ways in which the citizens can be best served at the point of client interface, as the primary beneficiaries.”

It is against this backdrop that Dr Pulane Pitso’s study explored the role of Higher Education Institutions (HEIs) in infusing the curriculum with graduate attributes for improved service delivery. The study is entitled: Community service learning as a transformative tool for infusing the university curriculum with graduate attributes for improved service delivery.
 
Citizens the central focus in public-service delivery
Although with the advent of democracy, the South African public service introduced the Batho Pele “people first” initiative which is one of the key transformation-oriented initiatives to ensure that citizens are the central focus in public service  delivery. An extant literature indicates that more work by the government still needs to be done in terms of the institutionalisation and implementation thereof.

Notwithstanding that public service is primarily responsible for addressing challenges related to poor service delivery, Dr Pitso moved from a premise that a multifaceted and collaborative approach, underpinned by a concerted effort by all relevant sectors, is more likely to contribute significantly towards improving service delivery. Specific focus was given to sectors primarily mandated to lay foundations through training and development such as HEIs, since the nature and quality of public service largely depends on the nature, quality and relevance of the system of education.

CSL a transformative teaching strategy
The basis for her thesis, emanated from the contention that public service delivery is a dynamic process which cultivates into a citizen-government relationship.

“It is this relationship that makes the implementation of the Batho Pele initiative crucial in ensuring that the social fabric and moral character of government is not compromised, thus the sustainability and facilitation of the emerged relationship,” Dr Pitso says.

The study focuses on the notion of community service learning (CSL) as an increasingly recognised transformative teaching strategy. It transcends lecture halls and utilises communities as educational spaces to provide practical exposure to real-life experiences to students on both learning and serving the communities.

Instilling graduate attributes in students
Dr Pitso’s thesis, which was predominately qualitative in nature, comprised two main stages. The first stage of the study focused on determining the current state of the public service in terms of the implementation of the Batho Pele principles. Whereas with the second stage, the focus was on determining the extent to which the graduate attributes are instilled in students by means of an exit-level CSL module at the UFS.

Dr Pitso’s thesis, which was awarded to her on 30 June 2016, is the product of five years of hard work, commitment and perseverance. She said it would not have been realised if it had not been for the leadership and mentorship of her promoter, Prof Mabel Erasmus, and co-promoter, Prof Victor Teise.

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