Star maps
Render the exact night sky for any date and any latitude and longitude, as a first-class layer on the canvas. Merchants sell these as anniversary, wedding and birth-night prints — some of the highest-margin personalized products there are.
Try it — right here
Illustrative sky — the production layer computes real star positions with d3-celestial from the same date and coordinates.
An actual sky, not a decorative one
The layer computes the sky from date, time and coordinates using d3-celestial, so the constellations are in the right place for the moment the customer chose. That matters more than it sounds: star-map buyers are buying a specific night, and a percentage of them will check.
- Date and time
- Down to the minute, with time-zone handling from the coordinates.
- Coordinates
- Latitude and longitude via a place picker or manual entry.
- Sky elements
- Stars by magnitude, constellation lines, the Milky Way, grid lines.
Styling you control, not a fixed poster
The generator is a layer, so it lives inside your template rather than replacing it. Set the projection and crop, choose which sky elements draw, set colours from your brand library, then arrange the caption text around it however your design wants. The same generator drives a full A2 print and a three-inch inset on a mug.
Why this is niche, and how it differs
Standalone star-map sites exist, and they sell one product. Personalization apps that bolt on a star map usually ship a fixed poster template you cannot restyle. Customei treats it as a layer inside the same canvas, warp mesh and export pipeline as everything else — which is why a star map can go on a mug, a phone case or a blanket without a second tool.
- It is a layer
- Rotate it, mask it, warp it, put three of them on one canvas.
- Same export
- Renders into the normal print file at full resolution.
- Same storefront runtime
- Customers pick date and place in the ordinary option form.
Specifications
The numbers, so you can check them against what your production partner actually needs.
- Engine
- d3-celestial
- Inputs
- Date · time · latitude · longitude
- Elements
- Stars by magnitude · constellation lines · Milky Way · grid
- Styling
- Brand-library colours, projection, crop, label typography
- Output
- Vector-quality render into the print file
Keep reading
Next step
Try it on your
own product.
Install Customei, attach an option set, and see this working on a real listing. Every plan ships with a 14-day trial — no card.