# Constellation artwork attribution

The Western constellation artwork in this directory is by Johan Meuris and is
from Stellarium's Western sky culture. The image files and anchored manifest
were sourced from `@found-in-space/stellarium-skycultures-western` version
`0.3.0`. The bundle contains 85 of the 88 IAU constellation figures; Puppis,
Serpens, and Vela have no bundled illustration. The illustrations are licensed
under the [Free Art License](https://artlibre.org/licence/lal/en/).
The constellation names and anchor data are from the same sky culture and are
licensed CC BY-SA.

The image files are kept in their original form. The viewer removes the black
background, applies a monochrome treatment, and controls opacity while drawing.
Anchor records identify three Hipparcos stars per illustration and include
ICRS unit vectors from J2016.0 for anchors absent from the loaded star catalogue.

Sources:

- [Stellarium Western sky culture](https://github.com/Stellarium/stellarium-skycultures/tree/master/western)
- [Stellarium artwork by Johan Meuris](https://johanmeuris.eu/work/stellarium-constellation-art/)
- [Stellarium guide: constellation artwork and star anchors](https://github.com/Stellarium/stellarium/blob/master/guide/ch_skycultures.tex)
- [Found-in-Space's packaged Western manifest and license summary](https://github.com/Found-in-Space/stellarium-skycultures)