What is a personalized star map?
The complete guide: definition, science, and how to create yours.
A personalized star map (also called star chart or star poster) is a custom astronomical print showing the exact position of 8,921 stars visible to the naked eye from a specific date, time, and location. Created using the HYG v4.2 star catalog from ESA's Hipparcos mission, each map includes all 88 IAU-recognized constellations with real star-to-star segment data. The sky is rendered using stereographic projection and sidereal time algorithms from the International Astronomical Union. Popular as gifts for weddings, births, anniversaries, and memorials, star maps transform a meaningful moment into a piece of wall art. OwnStarMap offers personalized star maps from 12 euros, available as instant digital download, museum-quality printed poster, or iPhone case, with free delivery worldwide and 11 visual styles to choose from.
How does a star map work?
HYG v4.2 Star Catalog
Our database contains 8,921 naked-eye visible stars (magnitude < 6.5), sourced from the HYG v4.2 catalog that compiles data from ESA's Hipparcos mission, the Yale Bright Star Catalogue, and the Gliese Catalogue of Nearby Stars.
Stereographic Projection
The spherical sky is projected onto a flat plane using stereographic projection, the same method astronomers have used for centuries. It preserves constellation shapes and produces a natural-looking night sky rendering.
88 IAU Constellations
Every map includes all 88 constellations officially recognized by the International Astronomical Union, with real star-to-star segment data. Constellation lines follow standard IAU data.
What occasions is a star map for?
Wedding
Capture the sky of your wedding night. A unique gift for the couple or a lasting memory of the most beautiful day.
Birth
Preserve the stars that shone when your child was born. A perfect gift for nursery decor.
Anniversary
Celebrate another year under the stars of the day you were born or the day you first met.
Valentine's Day
Give the sky of your first date or first kiss. The ultimate romantic gift.
Memorial
Honor the memory of a loved one by preserving the sky of a moment that connected you. A timeless tribute.
Mother's Day
Give your mother the stars of the day she became a mom. A personal and moving gift.
Discover our styles
How to create your star map
Choose your moment
Enter the date, time, and location of your event. Our algorithm calculates the exact position of the stars at that precise moment.
Customize the design
Add a title, subtitle, and choose from 11 visual styles. Preview your map in real time before ordering.
Receive your map
Instantly download your digital map or receive a museum-quality printed poster, delivered free worldwide.
Star map vs naming a star
| Criteria | Star Map | Naming a Star |
|---|---|---|
| Scientifically accurate | Yes — HYG / Hipparcos catalog | No — name not recognized by IAU |
| Personalized to your moment | Yes — date, time, location | No — random star assignment |
| Decorative physical object | Yes — poster or phone case | Paper certificate only |
| Price | From 12 euros | 20-100 euros |
| Recognized by astronomers | Yes — official IAU data | No — private commercial registry |
FAQ
Are the stars on the map really accurate?
Yes. We use the HYG v4.2 star catalog, compiled from ESA's Hipparcos mission data. Positions are calculated using stereographic projection and sidereal time for your exact date, time, and location. This is the same accuracy used in professional astronomy software.
What date range works?
Our algorithm handles all dates from January 1, year 1 CE to today, and up to 2100 for future dates. Star positions remain astronomically accurate throughout this period thanks to proper motion data from the Hipparcos catalog.
How is it different from naming a star?
A star map is an astronomically accurate document showing the real sky at a precise moment. Naming a star is a symbolic gesture: the name is not recognized by the International Astronomical Union and does not correspond to any scientific data.
What delivery formats do you offer?
Three options: instant digital download (high-resolution JPEG), museum-quality printed poster (250gsm satin paper, multiple sizes), and iPhone case. Digital downloads are available immediately; prints are delivered free worldwide.
How much does a star map cost?
From 12 euros for a digital star map. Printed posters start at 29 euros and iPhone cases at 29 euros. Delivery is free worldwide. 11 visual styles are available at no extra charge.
Can I see a preview before ordering?
Yes. Our online editor generates a real-time preview of your star map. You see exactly the final result before paying, including your custom text, visual style, and star positions.
From 12 euros. Instant digital download or printed poster with free delivery.