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BOOTES-6 Telescope Station captures rare southern lights and advances UFS space research

05 November 2024 | Story Leonie Bolleurs | Photo Supplied

The northern lights, with their vibrant displays of green, pink, and violet hues, have become a famous attraction in Nordic countries. But in early October, a rare sighting of the southern lights – or aurora australis – was reported in South Africa, surprising many.

Prof Pieter Meintjes, Professor in the Department of Physics at the University of the Free State (UFS), explains that both the northern and southern lights are the result of charged particles from coronal mass ejections (CMEs) on the sun, which are captured by Earth’s magnetic field. "The interaction between magnetic fields and charged particles, such as protons and electrons, is very interesting. The magnetic field forces these particles to spiral around the field lines, ultimately guiding them towards the magnetic poles. As these particles enter Earth’s atmosphere, they collide with atmospheric atoms, causing a beautiful glow. The colours of the aurora indicate which atoms are involved. Typically, hydrogen shines red, while oxygen and nitrogen produce a greenish-blue tinge," he says.

Observing the southern lights

When the display occurs above the northern magnetic pole, it is called the aurora borealis (northern lights) and can typically be observed over regions such as Alaska, Greenland, and the Nordic countries. Above the southern magnetic pole, it is known as aurora australis (southern lights), usually visible over places such as Antarctica and New Zealand. “In extreme cases – when gigantic mass ejections occurred – it can also be observed in mid-latitudes such as South Africa,” says Prof Meintjes.

This recent and rare South African sighting was also captured by the BOOTES-6 telescope station at Boyden Observatory, located just outside Bloemfontein. According to Prof Meintjes, the telescope station has an all-sky monitor – a camera constantly watching the sky for changes and monitoring, among others, cloud cover to ensure that the telescope is always safe from weather. While the monitor was taking photos of the night sky, Prof Alberto Castro-Tirado, a research professor at the Institute of Astrophysics of Andalusia in Spain, picked up the aurora.

The Institute of Astrophysics of Andalusia in Spain, in collaboration with the University College Dublin (UCD), is partnering with the UFS in a research-driven initiative involving the BOOTES-6 telescope station, installed in 2022 during the COVID-19 pandemic. Under a Memorandum of Understanding that was recently renewed for another five years, the UFS and UCD share approximately 30% of the telescope's observing time dedicated to UFS research.

“The DPRT telescope (Dolores Pérez-Ramírez telescope), named after a Spanish astronomer and lecturer at the University of Jaén, contributes significantly to our research, with publications resulting from contributions made by the telescope station and collaborators on gamma-ray bursts, occultations, and transient events co-authored by me and a colleague in the department, Dr Hendrik van Heerden,” notes Prof Meintjes.

Research-driven initiatives

Data from the telescope station is also used for their in-house projects and contributes significantly to the work of their PhD students that will be submitted in the next few years. This includes the PhD work of Helene Szegedi, who uses data from the BOOTES-6 telescope station to study cataclysmic variable systems – compact binaries that erupt regularly. Another PhD student, Joleen Barnard, studies blazar variability under the guidance of Prof Brian van Soelen. Blazars, explains Prof Meintjes, are the core of distant galaxies powered by supermassive black holes. These cosmic jets are pointed towards Earth, but fortunately, they are millions or billions of light years away; otherwise, their impact would be devastating to life on Earth.

News Archive

OSM opening concert 2012

2012-03-02

The OSM Camerata is going to shine in the very first annual OSM opening concert.
1 March 2012

OSM opening concert 2012 with the OSM Camerata
Conductor: Nicholas Nikolaidis
Date: 1 March 2012
Venue: Odeion
Time: 19:30

The OSM opening concert 2012 with the OSM CAMERATA will be streamed live on the internet with the generous support of OSM partner, LA MUSE AUDIO & LIGHTING (www.ufs.ac.za/ufslivestreaming) in collaboration with the UFS LIVE STREAMING UNIT.

The OSM Camerata is going to shine in the very first annual OSM opening concert. The ensemble will be conducted by Nicholas Nikolaidis. The programme includes excerpts from Stabat Mater (Pergolesi), Romanian Folk Dances (Bartók), Pelimannit (Rautavaara), Elegy (Grové) and Purple Haze (Hendrix). since 2011, the Odeion School of Music has embarked on a new, innovative strategy striving towards uncompromising excellence and internationalisation, which includes the A-List scholarship programme and a new flagship chamber ensemble, the OSM Camerata. Talented South African, conductor/tenor Nicholas Nicolaidis, (runner-up in the First National Len van Zyl Orchestral Conducting Competition) will take the stage for the inaugural concert of the OSM.

Nicholas started his conducting career at an early age while still in the Drakensberg Boys’ Choir School. Professionally his first conducting post was as choirmaster and conductor of the choir and band at Pridwin Preparatory School (Melrose, Johannesburg) in 1996.

Following his appointment in April 1997 as the Musical Director of Côr Meibion Cymru de Affrig (The Welsh Male Voice Choir of South Africa), he conducted the choir for seven years, producing three albums. One of the highlights was the performance at the Royal Albert Hall in London in October 2000 for the Millennium Festival of Male Voice Choirs.

His orchestral conducting debut was in 1998 at the Johannesburg City Hall where he conducted the Johannesburg Festival Orchestra and the Symphony Choir of Johannesburg in a few items of ‘Last Night of the Proms’. Selected conducting performances include the Chanticleer Singers in a performance of Schubert’s Mass in G at the Holy Trinity Church (Braamfontein, Johannesburg) in 2002, and the Johannesburg Camerata, a chamber orchestra consisting of talented young performers, during their winter season in 2005.

In 2006, Nicholas enrolled at Stellenbosch University for a Master’s degree in Choral Conducting under the direction of the Norwegian pedagogue, Kåre Hanken. During this time, he also conducted the Johannesburg-based chamber choir, Collegium Vocale. He conducted the Johannesburg Chamber Wind Ensemble from 2006 to 2008.

In 2009, he conducted the Johannesburg Festival Orchestra in a programme of music by Leroy Anderson, the vocal ensemble, In Verse, and the Chanticleer Singers during their Christmas season. Nicholas was also the winner of the inaugural Young Choral Conductors Competition held during the Stellenbosch International Choral Conducting Symposium in March 2009.

In February 2010, he was awarded the Silver Medal in the inaugural Len van Zyl Conducting Competition held in conjunction with the Cape Philharmonic Orchestra. During the Easter period of 2010 he conducted Cantamus Corde in a performance of JS Bach’s St John’s Passion, whilst also singing the role of the Evangelist.

Nicholas has also appeared as guest conductor of the Philharmonia Choir of Cape Town in a concert with music by Ramirez and Klatzow. In that year he also conducted the gala Concert of the Brooklyn Theatre (Pretoria).

Refreshments will be on sale before and after the concert.

Admission:
R60 (adults)
R40 (pensioners, students and learners)
Tickets available at Computicket.

Enquiries:
Ninette Pretorius (Tel: +27(0)51 401 2504)

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