{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xsi:schemaLocation": "https://www.spase-group.org/data/schema  https://www.spase-group.org/data/schema/spase-2.7.1.xsd",
    "Version": "2.7.1",
    "Instrument": {
      "ResourceID": "spase://SMWG/Instrument/PADRE/MeDDEA",
      "ResourceHeader": {
        "ResourceName": "Measuring Directivity to Determine Electron Anisotropy (MeDDEA)",
        "AlternateName": [
          "PADRE/MeDDEA",
          "MeDDEA"
        ],
        "ReleaseDate": "2026-05-30T00:08:46",
        "RevisionHistory": {
          "RevisionEvent": {
            "ReleaseDate": "2026-06-01T00:08:46",
            "Note": "Updated the description. SY"
          }
        },
        "Description": "MeDDEA, Measuring Directivity to Determine Electron Anisotropy, is one of the scientific instruments on the PADRE mission. It is a photon-counting hard X-ray directivity instrument that uses flight-spare detectors from the Spectrometer/Telescope for Imaging X-rays, STIX, provided by CEA-Saclay. MeDDEA measures individual photons and time-tags them with a time resolution better than 1 ms. The instrument has an energy range of approximately 3 keV to 110 keV and an energy resolution of approximately 1.1 keV at 59.5 keV. Its field of view is about 6 degrees, but it does not provide spatial resolution. MeDDEA is designed to investigate the directivity of solar flare X-ray emissions and to advance understanding of solar flare electron anisotropy.",
        "Contact": {
          "PersonID": "spase://SMWG/Person/Steven.Christe",
          "Role": "PrincipalInvestigator"
        },
        "InformationURL": {
          "Name": "PADRE Instrument Web Page",
          "URL": "https://padre.ssl.berkeley.edu/timeline/",
          "Description": "PADRE instrument overview page describing SHARP and MeDDEA."
        }
      },
      "InstrumentType": [
        "Spectrometer",
        "SolidStateDetector"
      ],
      "InvestigationName": "Measuring Directivity to Determine Electron Anisotropy (MeDDEA) on PADRE",
      "OperatingSpan": {
        "StartDate": "2025-06-23T00:00:00",
        "Note": "StartDate is the PADRE launch date."
      },
      "ObservatoryID": "spase://SMWG/Observatory/PADRE"
    }
  }
}