Lunar Terminator Crater Wall & Central Peak Shadow-Length Hypsometer

Deterministic Sub-pixel shadow-tip terminator distance + selenographic colongitude solar elevation h_sun + spherical lunar curvature R=1737.4 km correction engine (.jpg, .png, .tiff, .fits) built for Celestron, ZWO ASI, AutoStakkert!, Sky-Watcher — zero-upload ephemeral Wasm RAM execution.

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