{
  "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",
    "MetadataRightsList": {
      "Rights": {
        "SchemeURI": "https://spdx.org/licenses/",
        "RightsIdentifierScheme": "SPDX",
        "RightsIdentifier": "CC0-1.0",
        "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
        "RightsName": "Creative Commons Zero v1.0 Universal",
        "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions"
      }
    },
    "DisplayData": {
      "ResourceID": "spase://NASA/DisplayData/POLAR/VIS/PT300S",
      "NamingAuthority": "NASA",
      "ResourceType": "DisplayData",
      "ResourceHeader": {
        "ResourceName": "Polar Visible Imaging System Earth Camera Key Parameters",
        "DOI": "https://doi.org/10.48322/acg3-wk97",
        "ReleaseDate": "2025-12-04T13:28:01Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2021-04-27T15:38:11",
              "Note": "Only known prior ReleaseDate of the metadata"
            },
            {
              "ReleaseDate": "2024-06-24T00:00:00",
              "Note": "Added DOI and PublicationInfo minted by TLK, updated the RepositoryID, updated the SPDF MetadataContact Person to Robert M. Candey, metadata updated to SPASE 2.6.0, reviewed by LFB 20220803"
            },
            {
              "ReleaseDate": "2025-09-30T14:25:16Z",
              "Note": "Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB"
            },
            {
              "ReleaseDate": "2025-12-04T13:28:01Z",
              "Note": "Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB"
            }
          ]
        },
        "Description": "This dataset contains the investigator-selected Earth Camera Key Parameters from the Polar Visible Imaging System (VIS). It contains:\nglobal images of the auroral oval at ultraviolet wavelengths. One or more Earth camera images of 256 x 256 pixels are produced every five minutes, depending on the commanded mode.  Some coordinate information is included for viewer orientation. Coordinates are calculated for a grid of 18 x 18 points corresponding to one pixel out of every 15 x 15 pixel block. In addition, a rotation matrix and a table of distortion-correcting look direction unit vectors are provided for the purpose of calculating coordinates for every pixel.\n\nTo facilitate viewing of the images, a mapping of pixel value to a recommended color table based on the characteristics of the selected filter is included with each image.\n\nA relative intensity scale is provided by the uncompressed count table of variable 27. Approximate intensity levels in kiloRayleighs are given in the intensity table of variable 28. The VIS site at http://eiger.physics.uiowa.edu/~vis/software contains information on the availability of more precisely calibrated intensities.\n\nThe data set also contains various imager-related parameters, plus spacecraft position and velocity vectors, spin axis unit vector, and the sun position unit vector, all in GCI coordinates. Times are given in both the CDF-standard Epoch and the ISTP-standard Time_PB5.",
        "Acknowledgement": "Please acknowledge L.A. Frank for use of these data.",
        "PublicationInfo": {
          "Authors": "Frank, Louis A.",
          "PublicationDate": "2024-01-01T00:00:00",
          "PublishedBy": "Space Physics Data Facility"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Louis.A.Frank",
            "Role": "GeneralContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Robert.M.Candey",
            "Role": "MetadataContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Lee.Frost.Bargatze",
            "Role": "MetadataContact"
          }
        ],
        "PriorID": [
          "spase://VSPO/DisplayData/P_POLAR_HDR_VIS_K1",
          "spase://VSPO/DisplayData/POLAR/VIS/PT300S"
        ]
      },
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb",
          "Availability": "Online",
          "AccessRights": "Open",
          "RightsList": {
            "Rights": {
              "SchemeURI": "https://spdx.org/licenses/",
              "RightsIdentifierScheme": "SPDX",
              "RightsIdentifier": "CC0-1.0",
              "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
              "RightsName": "Creative Commons Zero v1.0 Universal",
              "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
            }
          },
          "AccessURL": [
            {
              "Name": "FTPS from SPDF (not with most browsers)",
              "URL": "ftps://spdf.gsfc.nasa.gov/pub/data/polar/vis/vis_k0/"
            },
            {
              "Name": "HTTPS from SPDF",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/polar/vis/vis_k0/",
              "Description": "In CDF via HTTP from CDAWeb"
            },
            {
              "Name": "CDAWeb",
              "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=PO_K1_VIS&index=sp_phys",
              "ProductKey": "PO_K1_VIS"
            }
          ],
          "Format": "CDF"
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "RightsList": {
            "Rights": {
              "SchemeURI": "https://spdx.org/licenses/",
              "RightsIdentifierScheme": "SPDX",
              "RightsIdentifier": "CC0-1.0",
              "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
              "RightsName": "Creative Commons Zero v1.0 Universal",
              "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
            }
          },
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://cdaweb.gsfc.nasa.gov/hapi",
            "Style": "HAPI",
            "ProductKey": "PO_K1_VIS",
            "Description": "Web Service to this product using the HAPI interface."
          },
          "Format": "CSV"
        }
      ],
      "ProviderProcessingLevel": "CALIBRATED",
      "InstrumentID": "spase://SMWG/Instrument/POLAR/VIS",
      "MeasurementType": "ImageIntensity",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1996-11-01T00:00:00",
          "StopDate": "2008-04-28T00:00:00"
        },
        "Cadence": "PT300S"
      },
      "ObservedRegion": "Earth.NearSurface.Ionosphere"
    }
  }
}