Press Release

First ZEISS star projector presented 100 years ago

Centennial of the Planetarium opening events taking place in both Munich and Jena, Germany on 21 October 2023

18 October 2023

Jena / Munich, Germany | 18 October 2023 | ZEISS Group

On 21 October 1923 the first public demonstration worldwide and as such the birth of the modern planetarium took place at the Deutsches Museum in Munich. It was later called Modell I.
On 7 May 1925, the ZEISS Planetarium in the Deutsches Museum began regular operation.
The International Planetarium Society (IPS) and the Society of German-speaking Planetariums e. V. (GDP) will celebrate the anniversary together with planetariums around the world between 21 October 2023 and 7 May 2025. The official opening ceremony will take place at the Deutsches Museum in Munich and the Zeiss-Planetarium Jena in cooperation with ZEISS on 21 October 2023. The opening event, featuring contributions from astrophysicist and aspiring astronaut Dr. Suzanna Randall and former ESA astronaut Thomas Reiter, can be experienced from 5 p.m. at

Federal President, Frank-Walter Steinmeier, is the patron of the Centennial and its numerous events and activities over the next two years. The planetarium show “Kira” funded by the Carl Zeiss Foundation and produced by Softmachine Immersive Productions GmbH in commission of GDP, and the show “100 Years Eternity” by Tobias Wiethof supported by the Bochum Planetarium, will make their world premieres at the opening event.

Journeys into space

Today there are more than 4,000 planetarium installations in almost every country in the world, 700 of which have been equipped with ZEISS technology. The name ZEISS and planetariums are closely linked. Today, as modern high-tech domes, star theaters offer fascinating fulldome shows and are still a crowd puller after 100 years. It is estimated that more than one billion people have visited a planetarium – another reason why the centennial is very special to the company.

“Today planetariums offer so much more than just a view of the stars,” says Dr. Karl Lamprecht, President and CEO of ZEISS. “They are places where, thanks in part to our innovative planetarium technology, space can be experienced. Children and adults can travel virtually through the entire universe. Planetariums thus broaden horizons and arouse enthusiasm for science and technology. In doing so, they combine science, art, culture and education in a unique way.”

ZEISS provides the combination of the traditional optical-mechanical star projector and digital video projectors which distinguish the most modern planetariums in the world.

Idea of rotating star sphere

In 1913, Oskar von Miller, founder of the Deutsches Museum in Munich, had the idea for an apparatus that would make the movements of the sun, moon and planets visible at the same time as those of the stars and asked ZEISS about manufacturing a ‘rotating star sphere’.

It is generally known that there was a meeting between representatives of the company and the Deutsches Museum in Jena on 24 February 1914. They discussed the complicated mechanics and Dr. Walther Bauersfeld of ZEISS came up with the idea of projecting the sun, moon and planets. His colleague, Professor Rudolf Straubel, remarked that the stars should then also be projected.

After World War I interrupted this development, Bauersfeld presented a design for a planetarium based on optical-mechanical light projection in March 1919. He and his team then began work on fleshing out the details. The time had come, and the artificial sky was illuminated for the first time on 21 October 1923. Expectations were far exceeded at the time, he says, so that after completion the device was installed permanently in 1925 and opened to the public as the world’s first planetarium on 7 May 1925, with the opening of the new part of the Deutsches Museum in Munich. The first projector from ZEISS brought 4,500 stars to shine in the dome.

In the one hundred years since 1923, ZEISS has developed and supplied numerous planetarium models and digital projection solutions for star theaters around the world.

An anniversary packed with activities

To mark the anniversary of Centennial of the Planetarium, the Deutsches Museum in Munich is showcasing the fascinating history of planetariums in a special exhibition of the same name sponsored by ZEISS. The exhibition includes several historic projectors, including Model I, which ZEISS presented to the Deutsches Museum is running between 5 May 2023 and 28 January 2024. Current planetarium shows can also be viewed in the portable dome.

In addition to the special exhibition, ZEISS is also involved in organizing the opening event, with a ZEISS Colloquium in November 2023. All ZEISS events relating to the anniversary can be found here

You can find more information on the anniversary on the official anniversary website here

The Centennial is funded by the Carl Zeiss Foundation.

Press contact Beatrice Weinberger

Corporate Brand, Communications and Public Affairs


ZEISS is an internationally leading technology enterprise operating in the fields of optics and optoelectronics. In the previous fiscal year, the ZEISS Group generated annual revenue totaling 8.8 billion euros in its four segments Semiconductor Manufacturing Technology, Industrial Quality & Research, Medical Technology and Consumer Markets (status: 30 September 2022).

For its customers, ZEISS develops, produces and distributes highly innovative solutions for industrial metrology and quality assurance, microscopy solutions for the life sciences and materials research, and medical technology solutions for diagnostics and treatment in ophthalmology and microsurgery. The name ZEISS is also synonymous with the world's leading lithography optics, which are used by the chip industry to manufacture semiconductor components. There is global demand for trendsetting ZEISS brand products such as eyeglass lenses, camera lenses and binoculars.

With a portfolio aligned with future growth areas like digitalization, healthcare and Smart Production and a strong brand, ZEISS is shaping the future of technology and constantly advancing the world of optics and related fields with its solutions. The company's significant, sustainable investments in research and development lay the foundation for the success and continued expansion of ZEISS' technology and market leadership. ZEISS invests 13 percent of its revenue in research and development – this high level of expenditure has a long tradition at ZEISS and is also an investment in the future.

With over 40,000 employees, ZEISS is active globally in almost 50 countries with around 30 production sites, 60 sales and service companies and 27 research and development facilities (status: 31 March 2023). Founded in 1846 in Jena, the company is headquartered in Oberkochen, Germany. The Carl Zeiss Foundation, one of the largest foundations in Germany committed to the promotion of science, is the sole owner of the holding company, Carl Zeiss AG.

Further information at

Press Photos

  • ZEISS Signet for “Centennial of the Planetarium” anniversary

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