Born from a passion for the stars
OwnStarMap is a French company creating astronomically precise star maps, capturing the celestial beauty of your most cherished moments.
Our story
It all started with a simple question: what did the sky look like on the day that changed everything? The day of a birth, a wedding, a meeting that transformed a life.
As a developer passionate about astronomy, I wanted to create a tool capable of recalculating the night sky with scientific precision — not a simple illustration, but a real astronomical map based on actual data.
OwnStarMap was born from this ambition: to make the beauty of the sky as it truly was accessible to everyone, for a moment that matters.
Theo Marie, founder
Dives-sur-Mer, Normandy, France
Astronomical accuracy
Every map is calculated, not drawn
8,921
visible stars
From the HYG v4.2 catalog, based on Hipparcos data from the European Space Agency.
88
IAU constellations
All 88 official constellations recognized by the International Astronomical Union, with their connecting lines.
< 0.01°
precision
Calculations based on standard positional astronomy algorithms: sidereal time, coordinate conversion, and stereographic projection.
Unlike many competitors who use approximate illustrations, every OwnStarMap is calculated in real-time from verified astronomical data. Each star's position is recomputed for your exact location, date, and time.
Our commitments
French company
Based in Normandy, OwnStarMap is a French company (SIRET 890 214 380). Design, development, and customer service — everything is made in France.
Accuracy first
We make no compromises on scientific quality. Every map is verifiable and based on public astronomical data.
Satisfaction guaranteed
30-day money-back guarantee, no questions asked. Your trust is our priority.