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18 November 2022 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Navil Hill Planetarium
At the Naval Hill Planetarium, one of only two in the world that is located in a game reserve in the middle of a city, are from the left, front: Bishop Billyboy Ramahlele, Director of Community Engagement, Tony Horn, Dr Molapo Qhobela, Dorah Klaas from UFS Institutional Advancement, Motheo Leeuw, and Prof Matie Hoffman.

Just over 11 years ago, the University of the Free State (UFS), the Mangaung Metro Municipality, and the Department of Small Business Development, Tourism and Environmental Affairs (DESTEA) signed a Memorandum of Understanding that focused on the development and establishment of the Naval Hill Planetarium. In 2016, the partnership was extended to include the establishment of a facility for environmental education adjacent to the planetarium. Thus, the site on Naval Hill, Bloemfontein is now the Centre for Earth and Space.

Recently, colleagues from the UFS and DESTEA, as well as Free State tourism entrepreneurs, gathered at the planetarium and Boyden Observatory to discuss the next step in this partnership – a collaboration to bring astro-tourism to the Free State.

 

Astro-tourism facilities

Tourism Registrar at DESTEA, Motheo Leeuw, said in his welcome address that,in order to increase the number of visitors to the Free State, it is important to work together. “We are creating a new product, that of astro-tourism,” he stated, and requested the tour guides who attended the event to develop an innovative new product for their market.

Speaking on behalf of the UFS, Dr Molapo Qhobela, Vice-Rector: Institutional Change, Strategic Partnerships and Societal Impact, stated that astro-tourism holds enormous potential for this country. He said the UFS is excited to be a partner in this initiative.

Dr Qhobela said he believes the beauty of science can be used to promote astro-tourism. He echoed Leeuw’s sentiment, stating that it is only through partnerships that astro-tourism will become a reality. “If we want to drive astro-tourism, we need to find creative ways to connect with each other,” he stated.

“We must work together to make our home, Bloemfontein, a better place,” he said.

 

A taste of astro-tourism

About 30 delegates, including the UFS, DESTEA, military representatives, and tour guides from Bloemfontein and Clarence, gained first-hand experience of the potential of astro-tourism. They attended a full-dome pre-rendered astronomy show and a presentation on the night sky in the Naval Hill Planetarium, where images were projected onto the planetarium dome, resulting in an immersive experience of the wonder of the universe. The tour guides proceeded on a game drive in the Franklin Game Reserve on Naval Hill.

Later in the afternoon – after enjoying a sunset view of the environment at the Boyden Observatory – guests were introduced to the observatory, including its telescopes and the Astronomy Museum. Prof Matie Hoffman, Dr Mart-Mari Duvehage, and Dawid van Jaarsveldt from the Department of Physics at the UFS, were on hand to conduct the tour of the observatory, and Bishop Billyboy Ramahlele, Director of Community Engagement, hosted the guests.

Tony Horn, a tour guide from Bush Junkies Adventure Safaris – one of the guests at the event – is optimistic about the potential of this initiative. He said he will bring visitors to Boyden and the planetarium to experience the attractions.

 

The Two-Observatories Project

The Boyden Observatory and the Naval Hill Planetarium are known as the Two-Observatories Project, which will be the focus of astro-tourism in the Free State. Focus areas of the Two Observatories Project are science communication and education, research, astronomy heritage, and the environment. The project therefore has great potential to attract tourists.

According to Prof Hoffman, the two observatories work in synergy to educate and inform citizens about the natural sciences. They are also important for the display of and communication about South Africa’s astronomical heritage.

In addition to being an active optical research site, Boyden Observatory is ideal for public lectures and star-gazing events. Educational programmes, including observations with telescopes, are also presented at the observatory. An astronomy museum is a major attraction at Boyden.

The Naval Hill Planetarium, also a good venue for public lectures and concerts, offers planetarium shows, including full-dome films. The site also offers a large hall that is primarily used for environmental education. These facilities operate under the banner of the Free State Centre for Earth and Space.

News Archive

Sunflowers are satellite dishes for sunshine, or are they?
2016-07-20

Eighty-six percent of South Africa’s
sunflowers are produced in the
Free State and North West provinces.

Helen Mirren, the English actress, said “the sunflower is like a satellite dish for sunshine”. However, researchers at the University of the Free State (UFS) have found that too much of this sunshine could have a negative effect on the growth of sunflowers, which are a major source of oil in South Africa.

According to Dr Gert Ceronio from the Department of Soil, Crop, and Climate Sciences at the UFS, extremely high soil temperatures play a definite role in the sprouting of sunflower seedlings. Together with Lize Henning, professional officer in the department, and Dr André Nel from the Agricultural Research Council, he is doing research on biotic and abiotic factors that could have an impact on sunflowers.

Description: Sonneblom 2 Tags: Sonneblom 2

Various degrees of deformity (bad-left
to none-right) in seedlings of the same
cultivar at very high soil temperatures.
Photo: Dr Gert Ceronio

Impact of high temperatures on sunflower production

The Free State and North West provinces, which produce 86% of South Africa’s sunflowers, are afflicted especially by high summer temperatures that lead to extremely high soil temperatures.

Dr Ceronio says: “Although sunflower seeds are able to germinate at temperatures from as low as 4°C to as high as 41°C, soil temperatures of 35°C and higher could have a negative effect on the vegetative faculty of sunflower seedlings, and could have an adverse effect on the percentage of sunflowers that germinate. From the end of November until mid-January, this is a common phenomenon in the sandy soil of the Free State and North West provinces. Soil temperatures can easily exceed the critical temperature of 43°C, which can lead to poor germination and even the replanting of sunflowers.”

Since temperature have a huge impact not only on the germination of sunflower seeds, but also on the vegetative faculty and sprouting of sunflower seedlings, Dr Ceronio suggests that sunflowers should be planted in soil with soil temperatures of 22 to 30°C. Planting is usually done in October and early November. Unfortunately, this is not always possible, as soil moisture is not optimal for growth. Farmers are then compelled to plant sunflowers later.

Impact of herbicides on sunflower growth

“High soil temperatures, combined with the herbicide sensitivity of some cultivars, could lead to the poor development of seedlings," says Dr Ceronio.

The use of herbicides, such as ALACHLOR, for the control of weeds in sunflowers is common practice in sunflower production. It has already been determined that ALACHLOR could still have a damaging effect on the seedlings of some cultivars during germination and sprouting, even at recommended application dosages.

“The purpose of the continued research is to establish the sensitivity of sunflower cultivars to ALACHLOR when exposed to high soil temperatures,” says Dr Ceronio.

 

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