Sky catalogue derivatives: CC BY-SA 4.0, https://creativecommons.org/licenses/by-sa/4.0/
Stars: David Nash, HYG v4.1, https://github.com/astronexus/HYG-Database . J2000 coordinates, magnitude and B-V colour index selected and quantized to six-byte records.
Constellation line data: Stellarium team, Modern sky culture, https://github.com/Stellarium/stellarium/tree/master/skycultures/modern . Hipparcos paths converted to indices into this star subset. Figures are conventional patterns, not official IAU boundaries.
Deep-sky coordinates: Mattia Verga and contributors, OpenNGC, https://github.com/mattiaverga/OpenNGC . Selected coordinates distributed in captures.json under CC BY-SA 4.0.
Milky Way: NASA/Goddard Space Flight Center Scientific Visualization Studio, ESA/Gaia/DPAC, https://svs.gsfc.nasa.gov/4851/ . Reprojected from the original linear EXR into six cubemap faces, supersampled before tone mapping, to avoid polar stretching.
Damon Scotting's photographs retain his copyright and are not included in the catalogue-data license.

Garden starts 31 October 2026, 23:25 UTC, 68 N / 0 E. Astronomy Engine supplies the shared celestial transform and running clock. Geographic north is rotated 110 degrees around the garden as an artistic viewing orientation.

Binocular photographic field: Digitized Sky Survey 2, STScI/NASA; colour composition and HiPS by CDS. Precomputed using CDS HiPS2FITS and served as local photographic tiles, with an explicit J2000 TAN projection. Brightness and colour saturation reduced for this garden. These are archival photographs, not a live exposure or a simulation of naked-eye limiting magnitude.
Source: https://aladin.cds.unistra.fr/hips/
Service: https://alasky.cds.unistra.fr/hips-image-services/hips2fits
DSS copyright and use: https://archive.stsci.edu/dss/copyright.html
https://archive.stsci.edu/dss/faq.html
DSS use for research, teaching and other non-profit activities is permitted with acknowledgement. Commercial applications require a licence from STScI. This local preview has not obtained a commercial DSS licence; resolve that before publishing a commercial application. Selected DSS photographic cutouts are bundled; source URLs, projections and byte sizes are retained in the photographic and skylight manifests.
The photographic plates retain their original saturation, plate seams and exposure limitations. Labels come from the OpenNGC coordinates already credited above.