{"schema": "too.foo.history.image-prompt.v1", "slug": "1967-06-17-project-639-the-people-s-republic-of-china-tests-its-first-hydrogen-b", "release": "4b157fe58dc3a255", "image_key": "1967-06-17-project-639-the-people-s-republic-of-china-tests-its-first-hydrogen-b", "image_sha256": "5a4975cc0d72a209f55f2444ccbdfc64b24af14aa599150b042147913aea0cff", "job": "20260827-004333-tier2", "model": "Ideogram 4 (fp8)", "preset": "V4_DEFAULT_20", "steps": 20, "seed": 20260823, "width": 1216, "height": 832, "caption_mode": "json", "caption": {"high_level_description": "An H-6A bomber continues level toward frame right moments after releasing device 639, while the single six-ton load descends behind and below it beneath one fully inflated retardation parachute. A long-lens ground view across the arid Lop Nor test basin in Xinjiang, with a low gravel plain, sparse scrub and a hazy distant horizon beneath clear morning air. The parachute cloth joins the four visible cord bundles around its lower edge. All four cord bundles remain taut and converge into the harness fixed directly atop device 639. The bomber remains ahead on the rightward flight path while the canopy-device assembly lags leftward under drag and descends under gravity. The bomber's level wings generate lift; the inflated canopy's aerodynamic drag supports and retards the falling device. The open central bay remains physically attached within the bomber's underside. The device hangs directly below the canopy, with matching vertical centres in projected view. The H-6A is approximately 35 m long, and device 639 has a mass of approximately 6,000 kg. It is 1967-06-17, about 08:20 China Standard Time: Aircrew enclosed inside the distant bomber, below visual resolution.; Matte aluminum-alloy airframe, woven parachute cloth and cords, compact metal harness, dark device casing, desert gravel and scrub.; H-6A bomber, internal bomb bay and parachute-retarded atmospheric test delivery. The release reads through separation: one device descends under one inflated canopy while the bomber continues level ahead.", "style_description": {"aesthetics": "controlled test execution recorded from a guarded distance. Documentary photographic realism: subtle film grain, believable wear on every material, candid imperfect framing.", "lighting": "Single low eastern morning sun from frame left; upper-left aircraft and canopy surfaces brighten while every lower-right surface falls into consistent shade.", "photo": "300mm, f/8, several kilometres from the release track, Ground-based telephoto documentary frame, bomber high right and descending load off-centre left, foreground gravel strongly defocused", "medium": "photograph, Long-lens ground photograph freezing aircraft and suspended load while atmospheric haze and nearby gravel remain soft.", "color_palette": ["#1E1913", "#4A3B28", "#8A7350", "#C9B892", "#2B2B2A"]}, "compositional_deconstruction": {"background": "A long-lens ground view across the arid Lop Nor test basin in Xinjiang, with a low gravel plain, sparse scrub and a hazy distant horizon beneath clear morning air. Single low eastern morning sun from frame left; upper-left aircraft and canopy surfaces brighten while every lower-right surface falls into consistent shade.", "elements": [{"type": "obj", "bbox": [180, 580, 330, 930], "desc": "One matte silver-gray H-6A, approximately 35 m long, flying level rightward with gear retracted and central bay open moments after release."}, {"type": "obj", "bbox": [270, 170, 460, 440], "desc": "One pale circular retardation canopy fully inflated, its cloth panels unevenly tensioned and softly creased by airflow."}, {"type": "obj", "bbox": [430, 260, 550, 355], "desc": "Four visible bundles of taut suspension cords converge downward from the canopy edge into one compact metal harness."}, {"type": "obj", "bbox": [535, 285, 620, 345], "desc": "Single dark test device, approximately 6,000 kg, hanging vertically beneath the harness; external surface detail softened by distance."}, {"type": "obj", "bbox": [650, 0, 1000, 1000], "desc": "Flat ochre gravel basin crossing the lower frame, with irregular sparse scrub and atmospheric haze softening the far ground."}, {"type": "obj", "bbox": [900, 0, 1000, 1000], "desc": "A narrow strip of nearby gravel and one scrub tuft, strongly defocused at the bottom edge."}]}}, "rendered_input": "{\"high_level_description\": \"An H-6A bomber continues level toward frame right moments after releasing device 639, while the single six-ton load descends behind and below it beneath one fully inflated retardation parachute. A long-lens ground view across the arid Lop Nor test basin in Xinjiang, with a low gravel plain, sparse scrub and a hazy distant horizon beneath clear morning air. The parachute cloth joins the four visible cord bundles around its lower edge. All four cord bundles remain taut and converge into the harness fixed directly atop device 639. The bomber remains ahead on the rightward flight path while the canopy-device assembly lags leftward under drag and descends under gravity. The bomber's level wings generate lift; the inflated canopy's aerodynamic drag supports and retards the falling device. The open central bay remains physically attached within the bomber's underside. The device hangs directly below the canopy, with matching vertical centres in projected view. The H-6A is approximately 35 m long, and device 639 has a mass of approximately 6,000 kg. It is 1967-06-17, about 08:20 China Standard Time: Aircrew enclosed inside the distant bomber, below visual resolution.; Matte aluminum-alloy airframe, woven parachute cloth and cords, compact metal harness, dark device casing, desert gravel and scrub.; H-6A bomber, internal bomb bay and parachute-retarded atmospheric test delivery. The release reads through separation: one device descends under one inflated canopy while the bomber continues level ahead.\", \"style_description\": {\"aesthetics\": \"controlled test execution recorded from a guarded distance. Documentary photographic realism: subtle film grain, believable wear on every material, candid imperfect framing.\", \"lighting\": \"Single low eastern morning sun from frame left; upper-left aircraft and canopy surfaces brighten while every lower-right surface falls into consistent shade.\", \"photo\": \"300mm, f/8, several kilometres from the release track, Ground-based telephoto documentary frame, bomber high right and descending load off-centre left, foreground gravel strongly defocused\", \"medium\": \"photograph, Long-lens ground photograph freezing aircraft and suspended load while atmospheric haze and nearby gravel remain soft.\", \"color_palette\": [\"#1E1913\", \"#4A3B28\", \"#8A7350\", \"#C9B892\", \"#2B2B2A\"]}, \"compositional_deconstruction\": {\"background\": \"A long-lens ground view across the arid Lop Nor test basin in Xinjiang, with a low gravel plain, sparse scrub and a hazy distant horizon beneath clear morning air. Single low eastern morning sun from frame left; upper-left aircraft and canopy surfaces brighten while every lower-right surface falls into consistent shade.\", \"elements\": [{\"type\": \"obj\", \"bbox\": [180, 580, 330, 930], \"desc\": \"One matte silver-gray H-6A, approximately 35 m long, flying level rightward with gear retracted and central bay open moments after release.\"}, {\"type\": \"obj\", \"bbox\": [270, 170, 460, 440], \"desc\": \"One pale circular retardation canopy fully inflated, its cloth panels unevenly tensioned and softly creased by airflow.\"}, {\"type\": \"obj\", \"bbox\": [430, 260, 550, 355], \"desc\": \"Four visible bundles of taut suspension cords converge downward from the canopy edge into one compact metal harness.\"}, {\"type\": \"obj\", \"bbox\": [535, 285, 620, 345], \"desc\": \"Single dark test device, approximately 6,000 kg, hanging vertically beneath the harness; external surface detail softened by distance.\"}, {\"type\": \"obj\", \"bbox\": [650, 0, 1000, 1000], \"desc\": \"Flat ochre gravel basin crossing the lower frame, with irregular sparse scrub and atmospheric haze softening the far ground.\"}, {\"type\": \"obj\", \"bbox\": [900, 0, 1000, 1000], \"desc\": \"A narrow strip of nearby gravel and one scrub tuft, strongly defocused at the bottom edge.\"}]}}", "prompt_sha256": "cff465a8cbba67dae2ac55264fbd1a17e051e91179265e28e5d20328fe1d33ac"}