{
  "schema_version": "rfs-trace-acceptance.v1",
  "status": "preliminary - based on recorded study default assumptions (rfs-011-source-note-2026-07-05.md)",
  "run_date": "2026-08-19",
  "target_key": "fine_gsd_100",
  "optimizer_target_key": "fine_gsd_100",
  "design_source": "projects/rural-fire-service-camera/designs/emberscope-three-mirror-clearance-recovered-fine-gsd-100.v1.json",
  "optimization_report": "projects/rural-fire-service-camera/three-mirror-clearance-recovery-fine-gsd-100-2026-08-19.md",
  "optimization_evidence": {
    "geometry_budget": 175,
    "freeform_budget": 0,
    "stage_a_de_evaluations": 175,
    "stage_a_polish_evaluations": 0,
    "stage_b_evaluations": 0,
    "final_merit": 4.341920145
  },
  "source_evidence": {
    "selected_target_key": "fine_gsd_100",
    "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"
  },
  "sampling_evidence": {
    "field_sample_results": [
      {
        "field_x_deg": 0.0,
        "field_y_deg": 0.0,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3072.581976874,
        "geo_ee80_radius_um": 3708.064362604,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": -1.264790504,
        "chief_ray_incidence_deg": {
          "M1_primary": 32.672532153,
          "M2_secondary": 49.67593181,
          "M3_tertiary": 52.765950041
        },
        "max_chief_ray_incidence_deg": 52.765950041,
        "small_hot_target_snr_factor": 0.0,
        "key": "center",
        "label": "Center field"
      },
      {
        "field_x_deg": 1.5575,
        "field_y_deg": 0.0,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3076.114627884,
        "geo_ee80_radius_um": 3765.916601142,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": -1.306898861,
        "chief_ray_incidence_deg": {
          "M1_primary": 32.693831387,
          "M2_secondary": 49.696629108,
          "M3_tertiary": 52.787011009
        },
        "max_chief_ray_incidence_deg": 52.787011009,
        "small_hot_target_snr_factor": 0.0,
        "key": "x_mid_pos",
        "label": "+X mid field"
      },
      {
        "field_x_deg": 3.115,
        "field_y_deg": 0.0,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3086.595660928,
        "geo_ee80_radius_um": 3721.917329621,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": -1.43615941,
        "chief_ray_incidence_deg": {
          "M1_primary": 32.757628598,
          "M2_secondary": 49.758613323,
          "M3_tertiary": 52.850656089
        },
        "max_chief_ray_incidence_deg": 52.850656089,
        "small_hot_target_snr_factor": 0.0,
        "key": "x_edge_pos",
        "label": "+X edge field"
      },
      {
        "field_x_deg": -1.5575,
        "field_y_deg": 0.0,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3076.114627885,
        "geo_ee80_radius_um": 3765.916601142,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": -1.306898861,
        "chief_ray_incidence_deg": {
          "M1_primary": 32.693831387,
          "M2_secondary": 49.696629108,
          "M3_tertiary": 52.787011009
        },
        "max_chief_ray_incidence_deg": 52.787011009,
        "small_hot_target_snr_factor": 0.0,
        "key": "x_mid_neg",
        "label": "-X mid field"
      },
      {
        "field_x_deg": -3.115,
        "field_y_deg": 0.0,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3086.595660928,
        "geo_ee80_radius_um": 3721.917329621,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": -1.43615941,
        "chief_ray_incidence_deg": {
          "M1_primary": 32.757628598,
          "M2_secondary": 49.758613323,
          "M3_tertiary": 52.850656089
        },
        "max_chief_ray_incidence_deg": 52.850656089,
        "small_hot_target_snr_factor": 0.0,
        "key": "x_edge_neg",
        "label": "-X edge field"
      },
      {
        "field_x_deg": 0.0,
        "field_y_deg": 1.245,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3233.131029992,
        "geo_ee80_radius_um": 3966.865045206,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": 2.119798438,
        "chief_ray_incidence_deg": {
          "M1_primary": 33.673543134,
          "M2_secondary": 48.756291167,
          "M3_tertiary": 51.692815179
        },
        "max_chief_ray_incidence_deg": 51.692815179,
        "small_hot_target_snr_factor": 0.0,
        "key": "y_mid_pos",
        "label": "+Y mid field"
      },
      {
        "field_x_deg": 0.0,
        "field_y_deg": 2.49,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3555.226019122,
        "geo_ee80_radius_um": 4376.643719059,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": 5.59769846,
        "chief_ray_incidence_deg": {
          "M1_primary": 34.668052494,
          "M2_secondary": 47.860185995,
          "M3_tertiary": 50.586709725
        },
        "max_chief_ray_incidence_deg": 50.586709725,
        "small_hot_target_snr_factor": 0.0,
        "key": "y_edge_pos",
        "label": "+Y edge field"
      },
      {
        "field_x_deg": 0.0,
        "field_y_deg": -1.245,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3149.677896674,
        "geo_ee80_radius_um": 3680.433094533,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": -4.675298104,
        "chief_ray_incidence_deg": {
          "M1_primary": 31.665317472,
          "M2_secondary": 50.618046082,
          "M3_tertiary": 53.81238986
        },
        "max_chief_ray_incidence_deg": 53.81238986,
        "small_hot_target_snr_factor": 0.0,
        "key": "y_mid_neg",
        "label": "-Y mid field"
      },
      {
        "field_x_deg": 0.0,
        "field_y_deg": -2.49,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3567.411014721,
        "geo_ee80_radius_um": 4009.945675187,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": -8.234158657,
        "chief_ray_incidence_deg": {
          "M1_primary": 30.652187167,
          "M2_secondary": 51.581329061,
          "M3_tertiary": 54.839532627
        },
        "max_chief_ray_incidence_deg": 54.839532627,
        "small_hot_target_snr_factor": 0.0,
        "key": "y_edge_neg",
        "label": "-Y edge field"
      },
      {
        "field_x_deg": 3.115,
        "field_y_deg": 2.49,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3562.453843144,
        "geo_ee80_radius_um": 4501.935558658,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": 5.418628792,
        "chief_ray_incidence_deg": {
          "M1_primary": 34.744863938,
          "M2_secondary": 47.946477103,
          "M3_tertiary": 50.670389716
        },
        "max_chief_ray_incidence_deg": 50.670389716,
        "small_hot_target_snr_factor": 0.0,
        "key": "corner_pp",
        "label": "+X +Y corner"
      },
      {
        "field_x_deg": 3.115,
        "field_y_deg": -2.49,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3630.537977512,
        "geo_ee80_radius_um": 4097.400474973,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": -8.458998645,
        "chief_ray_incidence_deg": {
          "M1_primary": 30.74616655,
          "M2_secondary": 51.659789167,
          "M3_tertiary": 54.928245052
        },
        "max_chief_ray_incidence_deg": 54.928245052,
        "small_hot_target_snr_factor": 0.0,
        "key": "corner_pn",
        "label": "+X -Y corner"
      },
      {
        "field_x_deg": -3.115,
        "field_y_deg": 2.49,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3562.453843143,
        "geo_ee80_radius_um": 4501.935558658,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": 5.418628792,
        "chief_ray_incidence_deg": {
          "M1_primary": 34.744863938,
          "M2_secondary": 47.946477103,
          "M3_tertiary": 50.670389716
        },
        "max_chief_ray_incidence_deg": 50.670389716,
        "small_hot_target_snr_factor": 0.0,
        "key": "corner_np",
        "label": "-X +Y corner"
      },
      {
        "field_x_deg": -3.115,
        "field_y_deg": -2.49,
        "field_deg": null,
        "traced_rays": 17,
        "valid_fraction": 1.0,
        "centroided_rms_spot_um": 3630.537977512,
        "geo_ee80_radius_um": 4097.400474973,
        "ensquared_2px_fraction": 0.0,
        "ensquared_16px_fraction": 0.0,
        "best_focus_offset_mm": -8.458998645,
        "chief_ray_incidence_deg": {
          "M1_primary": 30.74616655,
          "M2_secondary": 51.659789167,
          "M3_tertiary": 54.928245052
        },
        "max_chief_ray_incidence_deg": 54.928245052,
        "small_hot_target_snr_factor": 0.0,
        "key": "corner_nn",
        "label": "-X -Y corner"
      }
    ],
    "pupil_rings": [
      0.0,
      0.7,
      1.0
    ],
    "pupil_azimuths_deg": [
      0.0,
      45.0,
      90.0,
      135.0,
      180.0,
      225.0,
      270.0,
      315.0
    ],
    "minimum_rays_per_field": 17,
    "minimum_total_rays": 221,
    "measured_rays_per_field": {
      "center": 17,
      "x_mid_pos": 17,
      "x_edge_pos": 17,
      "x_mid_neg": 17,
      "x_edge_neg": 17,
      "y_mid_pos": 17,
      "y_edge_pos": 17,
      "y_mid_neg": 17,
      "y_edge_neg": 17,
      "corner_pp": 17,
      "corner_pn": 17,
      "corner_np": 17,
      "corner_nn": 17
    },
    "measured_total_rays": 221
  },
  "no_vignetting_evidence": {
    "threshold": 0.9,
    "min_unobscured_throughput_by_field": {
      "center": 1.0,
      "x_mid_pos": 1.0,
      "x_edge_pos": 1.0,
      "x_mid_neg": 1.0,
      "x_edge_neg": 1.0,
      "y_mid_pos": 1.0,
      "y_edge_pos": 1.0,
      "y_mid_neg": 1.0,
      "y_edge_neg": 1.0,
      "corner_pp": 1.0,
      "corner_pn": 1.0,
      "corner_np": 1.0,
      "corner_nn": 1.0
    },
    "minimum_measured_throughput": 1.0,
    "clipping_surface_by_field": {
      "center": "none in the modelled mirror/self-obstruction screen",
      "x_mid_pos": "none in the modelled mirror/self-obstruction screen",
      "x_edge_pos": "none in the modelled mirror/self-obstruction screen",
      "x_mid_neg": "none in the modelled mirror/self-obstruction screen",
      "x_edge_neg": "none in the modelled mirror/self-obstruction screen",
      "y_mid_pos": "none in the modelled mirror/self-obstruction screen",
      "y_edge_pos": "none in the modelled mirror/self-obstruction screen",
      "y_mid_neg": "none in the modelled mirror/self-obstruction screen",
      "y_edge_neg": "none in the modelled mirror/self-obstruction screen",
      "corner_pp": "none in the modelled mirror/self-obstruction screen",
      "corner_pn": "none in the modelled mirror/self-obstruction screen",
      "corner_np": "none in the modelled mirror/self-obstruction screen",
      "corner_nn": "none in the modelled mirror/self-obstruction screen"
    },
    "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"
  },
  "detector_plane_evidence": {
    "detector_plane_position": {
      "center_mm": [
        0.0,
        31.353223702,
        -76.766492735
      ],
      "normal": [
        0.0,
        -0.977483696,
        0.211010958
      ],
      "x_axis": [
        0.0,
        0.211010958,
        0.977483696
      ],
      "y_axis": [
        -1.0,
        0.0,
        0.0
      ],
      "width_mm": 10.88,
      "height_mm": 8.704
    },
    "diffraction_airy_radius_um": 24.156,
    "per_field_rms_spot_um": {
      "center": 3072.581976874,
      "x_mid_pos": 3076.114627884,
      "x_edge_pos": 3086.595660928,
      "x_mid_neg": 3076.114627885,
      "x_edge_neg": 3086.595660928,
      "y_mid_pos": 3233.131029992,
      "y_edge_pos": 3555.226019122,
      "y_mid_neg": 3149.677896674,
      "y_edge_neg": 3567.411014721,
      "corner_pp": 3562.453843144,
      "corner_pn": 3630.537977512,
      "corner_np": 3562.453843143,
      "corner_nn": 3630.537977512
    },
    "per_field_energy_2x2": {
      "center": 0.0,
      "x_mid_pos": 0.0,
      "x_edge_pos": 0.0,
      "x_mid_neg": 0.0,
      "x_edge_neg": 0.0,
      "y_mid_pos": 0.0,
      "y_edge_pos": 0.0,
      "y_mid_neg": 0.0,
      "y_edge_neg": 0.0,
      "corner_pp": 0.0,
      "corner_pn": 0.0,
      "corner_np": 0.0,
      "corner_nn": 0.0
    },
    "per_field_energy_16x16": {
      "center": 0.0,
      "x_mid_pos": 0.0,
      "x_edge_pos": 0.0,
      "x_mid_neg": 0.0,
      "x_edge_neg": 0.0,
      "y_mid_pos": 0.0,
      "y_edge_pos": 0.0,
      "y_mid_neg": 0.0,
      "y_edge_neg": 0.0,
      "corner_pp": 0.0,
      "corner_pn": 0.0,
      "corner_np": 0.0,
      "corner_nn": 0.0
    },
    "propagation_stops_at_detector": true
  },
  "angle_and_flat_image_evidence": {
    "chief_ray_angles_by_field": {
      "center": {
        "M1_primary": 32.672532153,
        "M2_secondary": 49.67593181,
        "M3_tertiary": 52.765950041
      },
      "x_mid_pos": {
        "M1_primary": 32.693831387,
        "M2_secondary": 49.696629108,
        "M3_tertiary": 52.787011009
      },
      "x_edge_pos": {
        "M1_primary": 32.757628598,
        "M2_secondary": 49.758613323,
        "M3_tertiary": 52.850656089
      },
      "x_mid_neg": {
        "M1_primary": 32.693831387,
        "M2_secondary": 49.696629108,
        "M3_tertiary": 52.787011009
      },
      "x_edge_neg": {
        "M1_primary": 32.757628598,
        "M2_secondary": 49.758613323,
        "M3_tertiary": 52.850656089
      },
      "y_mid_pos": {
        "M1_primary": 33.673543134,
        "M2_secondary": 48.756291167,
        "M3_tertiary": 51.692815179
      },
      "y_edge_pos": {
        "M1_primary": 34.668052494,
        "M2_secondary": 47.860185995,
        "M3_tertiary": 50.586709725
      },
      "y_mid_neg": {
        "M1_primary": 31.665317472,
        "M2_secondary": 50.618046082,
        "M3_tertiary": 53.81238986
      },
      "y_edge_neg": {
        "M1_primary": 30.652187167,
        "M2_secondary": 51.581329061,
        "M3_tertiary": 54.839532627
      },
      "corner_pp": {
        "M1_primary": 34.744863938,
        "M2_secondary": 47.946477103,
        "M3_tertiary": 50.670389716
      },
      "corner_pn": {
        "M1_primary": 30.74616655,
        "M2_secondary": 51.659789167,
        "M3_tertiary": 54.928245052
      },
      "corner_np": {
        "M1_primary": 34.744863938,
        "M2_secondary": 47.946477103,
        "M3_tertiary": 50.670389716
      },
      "corner_nn": {
        "M1_primary": 30.74616655,
        "M2_secondary": 51.659789167,
        "M3_tertiary": 54.928245052
      }
    },
    "fold_or_incidence_angles_by_surface": {
      "M1_primary": 32.645372545,
      "M2_secondary": 64.938457254,
      "M3_tertiary": 37.64121233
    },
    "maximum_surface_tip_parameter_deg": 64.938457254,
    "maximum_chief_ray_incidence_deg": 54.928245052,
    "best_focus_offset_by_field_mm": {
      "center": -1.264790504,
      "x_mid_pos": -1.306898861,
      "x_edge_pos": -1.43615941,
      "x_mid_neg": -1.306898861,
      "x_edge_neg": -1.43615941,
      "y_mid_pos": 2.119798438,
      "y_edge_pos": 5.59769846,
      "y_mid_neg": -4.675298104,
      "y_edge_neg": -8.234158657,
      "corner_pp": 5.418628792,
      "corner_pn": -8.458998645,
      "corner_np": 5.418628792,
      "corner_nn": -8.458998645
    },
    "best_fit_focus_spread_um": 14056.697105,
    "image_plane_curvature_or_tilt": "one shared flat detector plane held at the RFS-087 focus rule and 12.000000 deg about its local y axis; field best-focus spread is reported against that physical plane",
    "detector_plane_tilt_deg": 11.999999992
  },
  "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": "pass",
      "requirement": "100.0 mm target within 5%",
      "measured": 103.755059765
    },
    {
      "key": "no_vignetting",
      "verdict": "pass",
      "requirement": ">=0.90 unobscured throughput in every field",
      "measured": 1.0
    },
    {
      "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": 3630.537977512
    },
    {
      "key": "chief_ray_angle_reporting",
      "verdict": "pass",
      "requirement": "chief-ray incidence reported at every reflective surface for every field",
      "measured": {
        "maximum_deg": 54.928245052,
        "missing_fields": []
      }
    },
    {
      "key": "flat_image",
      "verdict": "fail",
      "requirement": "best-focus spread <= 24.156 um Airy radius",
      "measured": 14056.697105
    },
    {
      "key": "package_span",
      "verdict": "pass",
      "requirement": "<= 150 mm",
      "measured": 114.782847966
    },
    {
      "key": "mass_proxy",
      "verdict": "pass",
      "requirement": "<= 2.0 kg",
      "measured": 0.366839916
    }
  ],
  "verdict_record": {
    "verdict": "fail",
    "failed_gates": [
      "physical_clearance_model",
      "detector_plane_rms",
      "flat_image"
    ],
    "fallback_target_key": null,
    "next_engineering_action": "Retain the RFS-089 fold/spacing geometry as a strict 17/17 reserved-pupil clearance start, but do not promote it: detector-plane RMS and flat-image error both regress and remain far above the 24.2 um gates. The next bounded correction may refit optical surfaces while guarding 17/17 throughput; RFS-066/RFS-067 remain blocked."
  }
}