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Naval Hill Planetarium celebrates its first decade

09 November 2023 | Story Prof Matie Hoffman

A decade ago, the former Lamont-Hussey Observatory in Bloemfontein became Southern Africa’s first digital planetarium. Thanks to a collaboration between the University of the Free State (UFS), the Mangaung Metropolitan Municipality, the Department of Science and Innovation, and the Free State Province – as well as donations from trusts, foundations, and businesses – the project has grown and thrived.

Many different shapes, one place

The Naval Hill Planetarium was established in the old Lamont-Hussey Observatory. After the closure of the astronomical observatory, the buildings were refurbished and used by PACOFS as the Observatory Theatre. When the site became available again, it was envisioned to turn it into a planetarium. After many years of hard work, the newly refurbished buildings were opened in 2013 as the Naval Hill Planetarium – the first digital planetarium in Africa south of the Sahara.

The decade has seen many changes on the site of the former Lamont-Hussey Observatory, founded by the University of Michigan in 1927 to study double stars through the largest refracting telescope in the Southern Hemisphere. Improvements include the conversion of the old telescope building into a modern digital planetarium, the refurbishment of the structure of the old Lamont telescope and its installation as a display outside the old telescope dome, an observing platform, and a new hall for environmental education. The planetarium and the hall are now known as the Centre for Earth and Space, and developments are continuing.

Partners who have supported the project include the American Museum of Natural History (AMNH), the University of Michigan, Old Mutual, Sun International, the Hermann Ohlthaver Trust, ArcelorMittal, the Joan St Leger Lindbergh Charitable Trust, and the CB van Wyk Gesinstrust. In 2022, the Raubex Group and First Technology supported the University of the Free State to upgrade the planetarium’s projection system. Volunteers, including the Friends of the Boyden Observatory and the Naval Hill Planetarium, as well as the Friends of Franklin, have played an invaluable role in supporting and developing this community asset. The planetarium is managed by the Department of Physics at the University of the Free State.

A time to celebrate

During November and December 2023, the planetarium’s first decade will be celebrated with events and special shows, including the South African premier of the AMNH full-dome film, Worlds Beyond Earth. The board of the Southern African Large Telescope (SALT) – the largest single optical telescope in the Southern Hemisphere – will attend the premiere. Many international partners are involved in SALT, and AMNH is one of the shareholders in the SALT Foundation. As part of the partnership between the AMNH and SALT, AMNH provides sponsorship for education and outreach efforts in South Africa. The Naval Hill Planetarium benefits from this initiative and receives content for the planetarium in the form of AMNH full-dome films.

In addition to regular school shows, there will be two public shows every Saturday in November and December – one show in English and one in Afrikaans. In December, there will be additional shows for children. Bookings for shows should be done through Computicket, click here to book. The planetarium can accommodate group bookings and functions (enquiries at +2 51 401 9751 or ficky@ufs.ac.za).

News Archive

UFS involved in project to light up the townships

2006-06-06

The parties involved with the project are from the left: Prof Hendrik Swart (Departmental Chairperson of the UFS Department of Physics), Dr Thembela Hillie (CSIR), Prof Neerich Revaprasadu (Department of Chemistry at the University of Zululand) and Dr Wynand Steyn (CSIR).

UFS involved in project that could light up the townships

The University of the Free State’s (UFS) Department of Physics is involved with a project that could make life easier in the townships through the use of artificial light.

“The project is based on the use of sunlight to activate nano material in for example cement and paint during the day. At night the cement or paint can then radiate light,” said Prof Hendrik Swart, Departmental Chairperson of the UFS Department of Physics.

According to Prof Swart an amount of R3,9 million has been made available by the Council for Scientific and Industrial Research (CSIR) for the further development of the project.

Prof Swart visited the University of Florida in America in 1995 for a year where he researched luminescent phosphor material that is suitable for flat panel television screens. The red, green and blue spots on the television screens originate from these kinds of phosphor materials. “At that stage plasma television screens were only a dream. Today it is sold everywhere,” said Prof Swart.

“Upon my return I started a research group at the UFS which investigated the degrading of phosphor material. We also started to concentrate on the effectiveness of nano phosphors. In the mean time our cooperation with the Americans was strengthened with follow-up visits to America of my colleagues, Prof Koos Terblans and Mr Martin Ntwaeaborwa,” said Prof Swart.

“Nano phosphors are basically luminescent powders that consist of particles that are 1 millionth of a millimetre. These particles can provide light as soon as they are illuminated with, for instance, sunlight. The amount of time these particles can provide light, is determined by the impurities in the material,” said Prof Swart.

According to Prof Swart nano particles are developed and linked to infrastructure materials in order for these materials to be excited during the day by sunlight and then it emits light during night time.

“The nano material is of such a nature that it can be mixed with materials, such as paint or cement. The yellow lines of roads can for example emit light in a natural way during night time,” said Prof Swart.

About a year ago Prof Swart and Dr Thembela Hillie, a former Ph D-student of the UFS Department of Physics, had discussions with Prof Neerich Revaprasadu from the University of Zululand and the CSIR about the possibility of mixing these nano phosphor particles with other materials that can be used as light sources in the building of roads and houses.

“Prof Revaprasadu is also actively involved in the research of nano materials. Our efforts resulted in the CSIR approving the further extension of the project,” said Prof Swart.

“The UFS and the University of Zululand are currently busy investigating ways to extend the light emitting time,” said Prof Swart.

“There are eight M Sc and Ph D-students from the UFS and about five students from the University of Zululand working on this research project. The Department of Physics at the Qwaqwa Campus of the UFS, with Francis Dejene as subject head, is also involved with the project,” said Prof Swart.

According to Prof Swart the further applications of nano materials are unlimited. “Children whose parents cannot afford electricity can for instance leave any object such as a lamp, that is covered with these phosphor particles, in the sun during the day and use it at night as a light for study purposes,” said Prof Swart.

According to Prof Swart the further extension of the project will take about two years. “During this time we want to determine how the effectiveness of the phosphors can be increased. Discussions with the government and other role players for the possible implementation of the project are also part of our planning,” said Prof Swart.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
6 June 2006

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