{
  "schema_version": "camera-spectra-application-export-1",
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    "siril_reason": "The source does not establish a sensor-only response. A Siril sensor export would misrepresent its physical scope; use CSV or source JSON.",
    "siril_estimated": "/application-data/prf-npl-sigma-sigma-sd1-merrill-col-abcd-r1.estimated.siril.json",
    "siril_estimated_alternative": "/application-data/prf-npl-sigma-sigma-sd1-merrill-col-abcd-r1.alternative-estimate.siril.json",
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  "siril_estimate": {
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        {
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    "siril": "Source scales and channel grids retained. Pairs sorted by wavelength and repeated identical wavelength/value pairs removed.",
    "siril_estimated": "Derived relative photon-response model with documented source-quantity assumptions, numeric repairs and shared RGB normalization. Original samples and unknown source metadata are preserved separately."
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  "compatibility": "Format validation does not establish calibration accuracy or a complete optical response.",
  "original": {
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      "created_at": "2026-09-23T00:00:00Z",
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      "schema_version": "0.1.0-draft",
      "scientific_notes": "Canonical release: native grid and native R/G/B samples are preserved verbatim; sparse cells (wavelengths absent in the upstream CSV / JSON) are preserved as null; the parser never invents a value.",
      "source_author": "Darrodi et al.",
      "source_id": "src-npl-uea-darrodi2015-sigma-sd1merrill",
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      "updated_at": "2026-09-23T00:00:00Z",
      "validation_reason": "Source catalog entry recorded as 'measured' by the private intake; the canonical contract does not assert a per-record validation pass.",
      "validation_status": "unverified",
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    "source": {
      "authors": [
        "Darrodi et al.",
        "National Physical Laboratory"
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      "citation_text": "Darrodi et al. 2015, NPL-measured ground-truth sensitivity for the Sigma SD1 Merrill.",
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      "doi": null,
      "known_limitations": [
        "source_category=measured",
        "permission_status is 'unknown' on the canonical License record (no independent operational clearance granted)."
      ],
      "license_id": "lic-src-npl-uea-darrodi2015-sigma-sd1merrill",
      "measurement_method": "NPL ground-truth spectrally-resolved measurement, narrower range (400-680 nm @ 10 nm).",
      "normalization_method": null,
      "organization": "National Physical Laboratory / University of East Anglia",
      "original_wavelength_coverage": {
        "maximum": 680,
        "minimum": 400,
        "unit": "nm"
      },
      "publication": "Darrodi et al. 2015",
      "record_version": 1,
      "repository": "https://ueaeprints.uea.ac.uk/id/eprint/52181/",
      "retrieved_date": "2026-09-23",
      "rights_notes": "No public license statement observed at origin. The primary publication (Darrodi et al. 2015, JOSA A 32(3), 381-391, DOI 10.1364/JOSAA.32.000381) is (c) 2015 Optical Society of America under the Optica Author License v1 (https://doi.org/10.1364/OA_License_v1#VOR) for the Version of Record; the publication text license does NOT cover the per-record numerical data. No public data download URL has been observed at NPL, UEA, or Optica. Redistribution permission has not been requested.",
      "schema_version": "0.1.0-draft",
      "source_id": "src-npl-uea-darrodi2015-sigma-sd1merrill",
      "title": "NPL-measured ground-truth spectral sensitivity for the Sigma SD1 Merrill (Darrodi et al. 2015).",
      "url": "https://doi.org/10.1364/JOSAA.32.000381",
      "version": "2015",
      "year": 2015
    },
    "license": {
      "attribution_required": null,
      "commercial_api_allowed": null,
      "commercial_use_allowed": null,
      "derivatives_allowed": null,
      "evidence_revision": "2015",
      "evidence_url": "https://opg.optica.org/josaa/abstract.cfm?uri=josaa-32-3-381",
      "license_id": "lic-src-npl-uea-darrodi2015-sigma-sd1merrill",
      "license_name": null,
      "license_url": null,
      "notes": "Canonical release: observed upstream license text is preserved verbatim on license_name/license_url when available; the operational permission_status is the literal 'unknown' because the owner-updated policy (2026-09-23) revoked the prior bespoke grants. Downstream redistribution requires a fresh per-source review and a new authorization ID.",
      "permission_status": "unknown",
      "record_version": 1,
      "redistribution_allowed": null,
      "reviewed_date": "2026-09-23",
      "rights_holder": "National Physical Laboratory / University of East Anglia",
      "schema_version": "0.1.0-draft",
      "share_alike_required": null
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  }
}