# Notices for /map

The sky data and constellation art here were generated for the Tree of Life
sphere in rosicrucian-dev (scripts/gen-sky.ts) and are reused unchanged.

## `art/*.webp` — constellation figures

Illustrations by Johan Meuris, from the "Modern" sky culture of
[Stellarium](https://stellarium.org). Converted from PNG to greyscale WebP;
otherwise unchanged.

Licensed under the [Free Art License](https://artlibre.org/licence/lal/en/).
You may copy, distribute and modify them, provided you credit the author and
keep them, and anything derived from them, under the same license.

## `sky.json` — figure anchors (the `art` entries)

Which three stars pin each figure to the sky, and where in the image, are
taken from the same sky culture's `index.json`, © Stellarium's team,
[CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/). The star
positions have been converted to the sphere's own coordinates.

## `sky.json` — stars, constellation lines and names

From [d3-celestial](https://github.com/ofrohn/d3-celestial), © 2015 Olaf
Frohn, BSD 3-Clause License. Positions have been converted to the sphere's
own coordinates (ecliptic, with longitude counted from Regulus as 0° Leo).

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