A stereographic sky chart of the Three Enclosures (三垣) and 28 Lunar Mansions (二十八宿) — the ancient Chinese celestial division system — rendered with real star coordinates and true B-V star colors. Pure Canvas, zero dependencies, single HTML file.
- 🌌 28 Lunar Mansions — 148 stars in 4 celestial animals (青龙/玄武/白虎/朱雀), hover to light up each mansion's constellation lines
- 🏛️ Three Enclosures — 76 stars of 紫微垣/太微垣/天市垣 (imperial palace, court, market) around the north celestial pole
- ⭐ Real star data — coordinates from SIMBAD, colors from B-V color index
- 🧭 North polar stereographic projection — the classic ancient Chinese star chart view, viewed from above the north celestial pole
- ✨ Twinkling animation, dashed constellation lines, hover info cards with ancient/modern star name cross-reference (e.g. 心宿二 = α Scorpii)
Just open index.html in any modern browser. No build, no dependencies.
open index.htmlSU— 28 lunar mansions:[宿名, 象, [[RA, Dec, mag, "r,g,b", 古星名, 现代星名, 星座], ...]]YUAN— three enclosures star officers:[垣名, 星官名, [[RA, Dec, mag, "r,g,b", 古星名, 现代星名, 星座], ...]]- Coordinates: SIMBAD (ICRS J2000); star colors: B-V color index (shared with star-chart-yellow)
https://yipengfeifei.github.io/su-28-star-chart/
MIT