{
  "schemaVersion": 2,
  "lastReviewed": "2026-08-21",
  "event": {
    "name": "12 August 2026 solar eclipse",
    "referenceLocation": "Espinho, Portugal",
    "referenceLocationScope": "Astronomical circumstances used for the EDS station analysis. The 19:32:14 WEST predicted maximum and 97.9% coverage are Espinho-specific and are not presented as telescope-local circumstances."
  },
  "witnesses": [
    {
      "id": "eds-earth",
      "label": "Witness 01 · Earth",
      "observer": "EDS",
      "system": "Environmental Data Station",
      "role": "Continuous environmental telemetry",
      "locationPublic": "Espinho, Portugal",
      "locationPrecision": "municipality",
      "exactLocationPublished": false,
      "timingBasis": "UTC station telemetry timestamps presented as WEST (UTC+1)",
      "timingConfidence": "Authoritative station record at approximately 60-second cadence",
      "instrument": "EDS station with BME280 and BH1750 sensors",
      "sourceRecord": "/assets/data/eclipse_2026_08_12_event_window.csv"
    },
    {
      "id": "cosmonutz-sky",
      "label": "Witness 02 · Sky",
      "observer": "CosmoNutz",
      "system": "Seestar telescope acquisition system",
      "role": "Solar telescope observation",
      "locationPublic": "Vila Praia de Âncora area, northern Portugal",
      "locationPrecision": "locality",
      "exactLocationPublished": false,
      "locationDisclosure": "Location documented at locality level. Precise observing position intentionally withheld.",
      "timingBasis": "Network-synchronized acquisition system time presented as WEST (UTC+1)",
      "timingConfidence": "Operationally reliable for event reconstruction; not independently verified against a dedicated precision timing reference",
      "timingContext": {
        "instrument": "Seestar telescope",
        "controlDevice": "iPad Mini running the Seestar application",
        "network": "Active mobile Internet connection with normal device and network time synchronization"
      },
      "instrument": "Seestar telescope controlled through the Seestar application",
      "sourceRecord": "/experience/media/proxy_manifest.json"
    }
  ],
  "relationship": {
    "coLocated": false,
    "statement": "EDS and the CosmoNutz telescope are two geographically separate witnesses to one event.",
    "sharedClockMeaning": "The records are reconstructed on one working WEST timeline; this does not make their local astronomical circumstances identical.",
    "synchronizationStatus": "network-synchronized working alignment",
    "synchronizationCaveat": "Acquisition devices were operating with network-synchronized system time. Alignment is considered operationally reliable for event reconstruction, but was not independently verified against a dedicated precision timing reference. EDS telemetry and astronomical reference times retain their stated source precision."
  },
  "responsibility": {
    "primaryContributor": "Teófilo Couto",
    "roles": [
      "EDS engineering",
      "environmental sensing and telemetry",
      "software engineering",
      "field observation",
      "telescope acquisition and astrophotography",
      "data analysis and scientific visualization",
      "synchronized replay engineering",
      "reproducibility, archive engineering, and deployment"
    ],
    "systems": {
      "EDS": "Environmental witness",
      "CosmoNutz": "Optical and astronomical witness",
      "MDNT": "Independent research and engineering laboratory"
    }
  },
  "withheldInformation": [
    "Precise telescope observing position"
  ],
  "knownGaps": [
    "Complete telescope filter and accessory metadata",
    "Independent verification against a dedicated precision timing reference",
    "Detailed field notes"
  ]
}