About us
Stellarium Labs develops and publishes the apps built on Stellarium, the open source planetarium used by more than twenty million people since 2000: Stellarium Mobile on iOS and Android since 2011, Stellarium Web in your browser, and Stellarium VR on Meta Quest. One engine runs under all of them, and we develop it to render an accurate sky from the largest catalogues and sky surveys available.
The company, Noctua Software Ltd, was founded in 2012 by two brothers, Fabien and Guillaume Chereau: the creator of Stellarium and one of its long-standing developers, so the apps come from the people who build the project itself.
Fabien Chereau

Fabien created Stellarium in the summer of 2000 and has led the project since. As a research engineer he also worked on astronomy projects, among them ESA’s Gaia mission and the ESO science archive. He runs Stellarium Labs.
Guillaume Chereau

Guillaume is a software engineer and has developed Stellarium for more than ten years. He founded Noctua Software, the company that published the first Stellarium Mobile, and he builds the engine and the 3D side of our apps.
Contact
Noctua Software Ltd, trading as Stellarium Labs
Unit G, 15/F, TAL Building, 49 Austin Road, Kowloon, Hong Kong
[email protected] for the company, partnerships, licensing of the engine and press. For help with the apps, see the support page.