The software behind our star maps is a custom built work of art which utilises data from a range of respected astronomical catalogues, databases, and resources, including:

• XHIP: An Extended Hipparcos Compilation
  Includes positions and magnitudes of stars, offering a comprehensive and accurate dataset for our maps.
  (Source: Anderson E., Francis C., 2012, VizieR V/137D)
• Tycho-2 Catalogue and Hipparcos Data
  This data provides precise star positions and brightness measurements, particularly for stars brighter than magnitude 8.0. These datasets are crucial for enhancing the visual accuracy and detail of our Milky Way representations. (Credit to NASA's Scientific Visualization Studio)
• Gaia Data Release (DR2)
  Supplies precise data on 1.7 billion stars, allowing us to create a rich and detailed star map.
• Saguaro Astronomy Club Database (v8.1)
  Offers detailed data on deep-sky objects like star clusters and nebulae.
• IAU Constellation Boundaries
  Established by the International Astronomical Union in 1930, these boundaries define the edges of constellations for consistent mapping.
  (Source: Davenhall A.C., Leggett S.K., 1989, VizieR VI/49)
• Milky Way Outline Catalog by Jose R. Vieira
  Ensures a fallback option of accurate visualisation of the Milky Way in our maps.
• Messier Objects Data
  Highlights iconic celestial objects like the Pleiades and the Andromeda Galaxy. (Source: H. Frommert, SEDS.org)
• Stellarium Skycultures
  Provides cultural interpretations of star names and constellations from across the globe, including traditional Chinese constellations and other historical skycultures.