I built Zenith: a live local-first fixed viewport planetarium
Summary
ZenithTrack offers a live, local-first planetarium view rendered entirely in the browser, using Pan-STARRS imagery and Leaflet.js for tiling and overlays. It showcases a zero-server, client-side stack with data from SIMBAD and STScI, and explains the tradeoffs in image processing like oversaturation. The piece also covers the concept of a personal ribbon that repeats each sidereal day, with viewers at different latitudes seeing slightly different animations.