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    • Yellowknife THEMIS Ground-based All Sky Imager; Full Resolution Images.

    Metadata Updated: September 19, 2025

    THEMIS Ground All Sky Imager at Yellowknife (62.52 deg GLat, 245.69 deg GLong): 256 x 256 pixel full resolution images of auroral oval. The ASI stations 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. The CCD has a resolution of 256 x 256 pixels. 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.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date April 11, 2025
    Metadata Updated Date September 19, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 11, 2025
    Metadata Updated Date September 19, 2025
    Publisher THEMIS Data Repository at Berkeley
    Maintainer
    Identifier https://doi.org/10.48322/9kf9-0617
    Data Last Modified 2025-09-10
    Category Heliophysics
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 0cf3ed99-db3e-49f3-ad6a-c18d97d0c74c
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.48322/9kf9-0617
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash eeca6477b64375035d010a74609c87cb68c81e76437631f605d638186ee3fd37
    Source Schema Version 1.1
    Temporal 2008-03-01/2008-10-22

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