Pixel value: surface density in stars/arcmin^2 of stars with F480M < 20 AB in 0.5-mag bins of F212N-F480M from -1.5 to 3, on a 2" grid smoothed by a Gaussian of sigma 6"; the cube axis is the bin center in AB mag. Redder bins trace higher extinction (a pseudo-extinction map, not calibrated to A_V). em_min/em_max give the F480M band alone, which lets Aladin Lite's cube slider reach every frame. From the per-field vetted DAOPHOT catalogs of JWST GO 10678, F212N and F480M matched within 0.1"; saturated stars included, each counted once.
Step through the frames with the Player box on the map. The same cube opened in any Aladin Lite (HiPS browser, paste this page's folder URL) gets Aladin's own Player, which shows the same frames.