This Java application produces a high resolution Star Map (ca. 18000x9000 pixels).
This application has been developed with OpenJDK 22 and uses Apache Maven.
The original Gaia data (see below) is too big for ImageIO (the implementation hits the 2G limit),
so I have reduced it to 36000x18000 pixels. Download the file
https://www.hedenus.de/astro/data/Gaia_36k.bmp
and store it as
de.hedenus.astro/.cache/Gaia_36k.bmp
Under Windows run
generate_starmap.bat
The result is found in the target folder. Two files are generated:
- the map as PNG
- a CSV table of the stars with proper names
Gaia's all-sky view displayed in an equirectangular projection:
https://sci.esa.int/web/gaia/-/60196-gaia-s-sky-in-colour-equirectangular-projection
Bright Star Catalogue, 5th Revised Ed aka Yale Catalogue of Bright Stars:
https://cdsarc.u-strasbg.fr/cgi-bin/qcat?V/50#/article
German star names are taken from Wikipedia:
https://de.wikipedia.org/wiki/Liste_von_Sternennamen
Boundaries published by International Astronomical Union:
https://www.iau.org/public/themes/constellations/
Center points computed and published by Pierre Barbier:
https://watcheroftheskies.net/constellations/boundaries.html
Lines are taken from Stellarium:
https://github.com/Stellarium/stellarium/blob/master/skycultures/modern/constellationship.fab
https://github.com/Stellarium/stellarium/blob/master/stars/default/cross-id.dat
I assume, this license covers all licenses:
https://creativecommons.org/licenses/by-sa/4.0/