{
  "schema_version": "rfs-trace-acceptance.v1",
  "status": "preliminary - based on recorded study default assumptions (rfs-011-source-note-2026-07-05.md)",
  "run_date": "2026-07-25",
  "target_key": "fine_gsd_100",
  "optimizer_target_key": "fine_gsd_100",
  "design_source": "projects/rural-fire-service-camera/designs/emberscope-four-mirror-fine-gsd-100.v1.json",
  "optimization_report": "projects/rural-fire-service-camera/four-mirror-prescription-optimization-fine-gsd-100-2026-07-25.md",
  "optimization_evidence": {
    "geometry_budget": 400,
    "freeform_budget": 400,
    "stage_a_de_evaluations": 748,
    "stage_a_polish_evaluations": 150,
    "stage_b_evaluations": 220,
    "final_merit": 7498.301433659813
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  "source_evidence": {
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    "decision_date": "2026-07-24",
    "signoff_authority": "Greg Baker, project lead",
    "altitude_basis": "120 m reference altitude",
    "payload_branch": "fine-GSD custom-reflective research comparator; not the COTS-first fleet-survey baseline",
    "source_artifact_or_note": "projects/rural-fire-service-camera/rfs-053-target-decision-2026-07-24.md"
  },
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    "pupil_rings": [
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    "pupil_azimuths_deg": [
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    "minimum_rays_per_field": 17,
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    "measured_rays_per_field": {
      "center": 17,
      "x_mid_pos": 17,
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      "x_edge_neg": 17,
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    "measured_total_rays": 221
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  "no_vignetting_evidence": {
    "threshold": 0.9,
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    "minimum_measured_throughput": 0.11764705882352941,
    "clipping_surface_by_field": {
      "center": "aggregate trace loss or self-obstruction; individual surface not isolated",
      "x_mid_pos": "aggregate trace loss or self-obstruction; individual surface not isolated",
      "x_edge_pos": "aggregate trace loss or self-obstruction; individual surface not isolated",
      "x_mid_neg": "aggregate trace loss or self-obstruction; individual surface not isolated",
      "x_edge_neg": "aggregate trace loss or self-obstruction; individual surface not isolated",
      "y_mid_pos": "aggregate trace loss or self-obstruction; individual surface not isolated",
      "y_edge_pos": "aggregate trace loss or self-obstruction; individual surface not isolated",
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      "corner_np": "aggregate trace loss or self-obstruction; individual surface not isolated",
      "corner_nn": "aggregate trace loss or self-obstruction; individual surface not isolated"
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    "stop_window_baffle_package_clearance": "fail - entrance stop and reflective train are modelled; window, baffle, and package boundaries are not represented",
    "detector_clearance": "fail - propagation terminates at the flat detector plane, but final detector-footprint containment is not separately closed"
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  "detector_plane_evidence": {
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    "diffraction_airy_radius_um": 24.156,
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    "propagation_stops_at_detector": true
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    "fold_or_incidence_angles_by_surface": {
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    "maximum_surface_tip_parameter_deg": 36.34381609534586,
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      "center": 17.027998451055698,
      "x_mid_pos": -6.035819622269383,
      "x_edge_pos": 7.941179615153698,
      "x_mid_neg": -6.035819622269364,
      "x_edge_neg": 7.9411796151536755,
      "y_mid_pos": 20.166363582128017,
      "y_edge_pos": 19.262842219050366,
      "y_mid_neg": -5.1514305518701144,
      "y_edge_neg": 0.3702746514395367,
      "corner_pp": 20.65073116683296,
      "corner_pn": 4.271287243872187,
      "corner_np": 20.650731166832983,
      "corner_nn": 4.271287243872187
    },
    "best_fit_focus_spread_um": 26686.550789102366,
    "image_plane_curvature_or_tilt": "shared flat detector plane; field best-focus spread reported instead of a curved detector fit"
  },
  "gate_verdicts": [
    {
      "key": "field_sample_count",
      "verdict": "pass",
      "requirement": "exactly 13 named detector-field samples",
      "measured": 13
    },
    {
      "key": "pupil_sampling",
      "verdict": "pass",
      "requirement": "rings 0, 0.7, 1; eight azimuths; >=17 rays/field and >=221 total",
      "measured": {
        "minimum_rays_per_field": 17,
        "total_rays": 221
      }
    },
    {
      "key": "plate_scale_efl",
      "verdict": "fail",
      "requirement": "100.0 mm target within 5%",
      "measured": 94.14221563720149
    },
    {
      "key": "no_vignetting",
      "verdict": "fail",
      "requirement": ">=0.90 unobscured throughput in every field",
      "measured": 0.11764705882352941
    },
    {
      "key": "physical_clearance_model",
      "verdict": "fail",
      "requirement": "mirror, stop, window, baffle, package, and detector clearance all closed",
      "measured": "mirrors and self-obstruction modelled; window, baffle, package, and detector footprint not closed"
    },
    {
      "key": "detector_plane_metrics_reported",
      "verdict": "pass",
      "requirement": "RMS plus 2x2 and 16x16 energy reported at the flat detector for every field",
      "measured": 13
    },
    {
      "key": "detector_plane_rms",
      "verdict": "fail",
      "requirement": "every field RMS <= 24.156 um Airy radius",
      "measured": 6797.073660135339
    },
    {
      "key": "chief_ray_angle_reporting",
      "verdict": "pass",
      "requirement": "chief-ray incidence reported at every reflective surface for every field",
      "measured": {
        "maximum_deg": 74.9760812121145,
        "missing_fields": []
      }
    },
    {
      "key": "flat_image",
      "verdict": "fail",
      "requirement": "best-focus spread <= 24.156 um Airy radius",
      "measured": 26686.550789102366
    },
    {
      "key": "package_span",
      "verdict": "fail",
      "requirement": "<= 150 mm",
      "measured": 170.48835840364274
    },
    {
      "key": "mass_proxy",
      "verdict": "pass",
      "requirement": "<= 2.0 kg",
      "measured": 0.4064144002964981
    }
  ],
  "verdict_record": {
    "verdict": "fail",
    "failed_gates": [
      "plate_scale_efl",
      "no_vignetting",
      "physical_clearance_model",
      "detector_plane_rms",
      "flat_image",
      "package_span"
    ],
    "fallback_target_key": null,
    "next_engineering_action": "Compare this optimized four-mirror row with the RFS-053 Bauer-style five-mirror optimization at the identical target."
  }
}