Scene Director

**HEAVENS DOME — IMAGE B PROMPT**
(EXTRACTION STAGE • SUBTERRANEAN COSMOS • GEOMETRIC / TECHNICAL MEDIUM)

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**Medium**  
• Large-format, ultra-high-resolution analog technical photography — the aesthetic of plate camera documentation, as if a scientific team discovered and documented this spatial anomaly under the earth.
• No painterly effects, no soft focus; instead, razor-sharp, almost clinical material fidelity, with precise geometric modeling of light and space.

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**Visual Composition**  
• Viewpoint: Far below spring line, at the edge where the carved hemisphere rises out of dark stone, lens aimed sharply upward at 55°, so the hemisphere’s curve dominates the frame while the distant oculus (not centered, upper left) appears dizzyingly remote.
• The lower third is dominated by the brutal, cold geometry of the square-cut cavern floor and walls — raw stone, chiseled in precise, orthogonal planes.
• The pivotal spatial drama is in the **pendentive transition**: at each corner where square floor becomes curve, the stone is carved into ultra-precise, concave triangular spandrels (pendentives), their sharp lines and shadow planes serving as exact geometric resolves from slab to arc. These pendentives are the only clear sign-forms — everything else dissolves into velvet shadow or celestial haze.
• Above, the hemisphere vaults up in flawless cold indigo; its surface is so matte and deep-blue that it swallows light except where the corona reflects.
• The oculus is stark: a black void with a razor-thin, electric-blue corona, a cosmic pupil. No view of sky beyond. The light shaft is narrow, shockingly vertical — hard-edged where it slices through dust, but quickly diffuses into blue-white on the vault’s raw stone.

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**Lighting**  
• **Primary:** Zenithal vertical shaft from oculus — black void rimmed by electric-blue corona (eclipse mode). The corona’s radiance is cold, laser-sharp at the center, featheri