1gSpace Proxima-Centred Visible Starfield

The 1gSpace Proxima-Centred Visible Starfield provides catalogue-derived apparent directions and relative visual brightnesses for a fixed geometric observer represented by the target-epoch stellar state of Proxima Centauri, operationally used as a Proxima-system barycentre proxy. The reception instant is frozen at 2028-07-12 00:00:00 UTC, corresponding to J2028.5270384688256 TDB. Resulting sky directions are expressed on BCRS/ICRS axes. The workflow does not reposition pixels from an Earth-centred sky map. It reconstructs a catalogue of physical stellar emitters and transforms each accepted source individually. The frozen source archive comprises 79 input payloads totalling 8,928,615,686 bytes. Identity reconciliation produced 2,575,844 canonical object records, subsequently consolidated into 2,566,491 physical emitters. Source lineage includes Gaia EDR3 astrometry, Gaia DR3 radial velocities, Bailer-Jones EDR3 geometric distances, Hipparcos New Reduction, the original Hipparcos/Tycho catalogues, Tycho-2, the Tycho Double Star Catalogue, XHIP and the Yale Bright Star Catalogue. For accepted finite-distance sources, position and velocity states were constructed using ERFA/SOFA astrometric routines, reconstructed at their catalogue epochs, propagated through three-dimensional BCRS/ICRS space to the frozen reception epoch, translated to the Proxima observer origin and evaluated at photon emission by solving the finite-light-time equation. Observer-relative apparent visual magnitude was recalculated from the change in geometric distance using inverse-square flux scaling. Alpha Centauri A and B use a dedicated relative-orbit model; the Sun is evaluated from a barycentric ephemeris; Proxima Centauri itself is omitted because it defines the observer origin. The complete transformed catalogue contains 2,566,510 rows, of which 2,553,251 are valid render candidates. The Proxima apparent-magnitude criterion V ≤ 11.5 is applied only after the observer transformation. It yields exactly 1,491,263 distinct selected sources, with zero duplicate source keys and zero invalid selected coordinates or magnitudes. Each selected row retains its source identity, catalogue lineage, transformation method, uncertainty status and quality flags. The released dataset provides 2:1 plate carrée full-sky PNG maps in ICRS and Galactic coordinates at 4K, 16K and 32K resolution, together with analytical provenance and source-occupancy products at 4K and 16K. The release additionally includes coordinate-matched constellation-figure overlays in ICRS and Galactic projections at 4K and 16K resolution. Their vertices are derived from the transformed Proxima-view catalogue directions. The transformed catalogue foreground is the scientifically reconstructed component. A NASA/GSFC Scientific Visualization Studio Deep Star Maps 2020 Milky Way layer is retained as fixed distant-sky visual context. It is not transformed because the original two-dimensional panorama does not contain the per-pixel distance information required to reconstruct diffuse and unresolved emission from a displaced observer. Within the frozen source catalogues, stated reception epoch, observer proxy, accepted point estimates, declared special-source models and documented fallbacks, the catalogue foreground is a deterministic and scientifically reproducible Proxima-centred sky. It is not a photograph, an absolute radiance survey, an uncertainty-free representation of every source or a fully transformed model of diffuse Galactic emission.