{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "Version": "2.2.2",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/THEMIS/Ground/ASI/PT3S",
      "ResourceHeader": {
        "ResourceName": "THEMIS Ground-based All Sky Imager Level-0 Images",
        "AlternateName": "THEMIS-Ground ASI Images",
        "ReleaseDate": "2020-07-07T21:15:29Z",
        "Description": "This data set at the THEMIS Mission Data website at University of California, Berkeley contains full resolution Level-0 Ground All Sky Images of the white light aurora for all observatories in North America.  The ASI stations each monitor a 170 degree field of view imaging the auroral oval at kilometer resolution.  The ASI is comprised of a fisheye lens and CCD in a stainless steel enclosure topped with a transparent acrylic dome.  Exposure control ranges from 5 s to 1 ms although the typical data rate is one image every 3 seconds.  Silicone heaters keep the instrument within the nominal temperature range.  During daylight hours a sun shades deploy to protect the CCD.",
        "Acknowledgement": "We acknowledge NASA contract NAS5-02099 and V. Angelopoulos for use of data from the THEMIS Mission. Specifically S. Mende and E. Donovan for use of the ASI data, and the CSA for logistical support in fielding and data retrieval from the GBO stations.",
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Vassilis.Angelopoulos",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Stephen.B.Mende",
            "Role": "CoInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Eric.Donovan",
            "Role": "CoInvestigator"
          }
        ],
        "PriorID": [
          "spase://VSPO/NumericalData/THEMIS/Ground/ASI/PT3S",
          "spase://VSPO/NumericalData/THEMIS/Ground/ASI/PT3S"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/UCB/THEMIS",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "Name": "Plots, CDF files, and listings from UCB",
          "URL": "http://themis.ssl.berkeley.edu/data/themis/thg/l0/asi/",
          "Description": "Web access to ASK data."
        },
        "Format": "CDF",
        "Encoding": "None"
      },
      "InstrumentID": [
        "spase://SMWG/Instrument/THEMIS/Ground/UCLA-GBO/CHBG/ASI",
        "spase://SMWG/Instrument/THEMIS/Ground/CANMAG/ATHA/ASI"
      ],
      "MeasurementType": "ImageIntensity",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2005-01-01T01:00:00",
          "RelativeStopDate": "-P7D"
        },
        "Cadence": "PT3S"
      },
      "ObservedRegion": "Earth.Surface"
    }
  }
}