Hevelius Constellation Art. Johannes Hevelius, Firmamentum Sobiescianum sive Uranographia (1690). Artwork edited by Dan Tell and aligned by Dylan Salas (California Academy of Sciences). Asset adapted from James Hedberg. Some images courtesy of U.S. Naval Observatory and the Space Telescope Science Institute. Source declares CC BY; no version is specified. Skyshot converts the placement data to J2000 and projects/tints the unmodified source PNGs at runtime. License overview: https://creativecommons.org/share-your-work/cclicenses/ . Source: https://hub.openspaceproject.com/users/dsalas/asset/Hevelius_Constellation_Art/3/Hevelius_constellation_art.zip

OpenSpace source metadata:
{
  Name = "Hevelius Constellation Images",
  Version = "1.0",
  Description = "Constellation figures from Johannes Hevelius' Firmamentum Sobiescianum sive Uranographia. Hevelius artwork edited by Dan Tell and aligned by Dylan Salas(California Academy of Sciences). Some Hevelius constellations from U.S. Naval Observatory and the Space Telescope Science Institute. Asset File Adapted from James Hedberg",
  Author = "James Hedberg, Dylan Salas (CAS), Dan Tell (CAS)",
  URL = "http://jameshedberg.com ,http://Calacademy.org",
  License = "CC-BY"
}