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THEMIS Ground Based Observatories

THEMIS Ground Based Observatories. S. B. Mende. Ground Based Observatories. IMAGE FUV. THEMIS GBO heritage IMAGE satellite FUV imager system; ROCSAT-2 ISUAL imager; NSF’s Automatic Geophysical Observatories ( All Sky Imagers in Antarctica). ISUAL. PENGUIN-ASI.

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THEMIS Ground Based Observatories

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  1. THEMIS Ground Based Observatories S. B. Mende

  2. Ground Based Observatories IMAGE FUV • THEMIS GBO heritage • IMAGE satellite FUV imager system; • ROCSAT-2 ISUAL imager; • NSF’s Automatic Geophysical Observatories ( All Sky Imagers in Antarctica) ISUAL PENGUIN-ASI

  3. GBOs: A synoptic view of the aurora • Each GBO has an all sky imager (ASI) and -as necessary- a ground magnetometer (GMAG). • Sites have existing infrastructure (some have GMAGs). • GBOs cover North American sector. • GBOs satisfy L1 requirements of t-res (<10s), density/extent (1/MLT; >8GLT) with high margins (>2). • Supplemented by existing Canadian& Alaskan magnetometers (densercoverage) and intl. networks (extendedMLT coverage). • 20 GBO sites in Canada and Alaska. • 10 Education and Public Outreachground magnetometers (EPO/GMAGs)in the US, under EPO program mngt.

  4. GBOs: A synoptic view of the aurora Global auroral image taken by IMAGE WIC. Proposed THEMIS ground sites.

  5. GBOs: A synoptic view of the aurora

  6. GBO/ASIs: Based on AGOs • Environmental protection/deployment and automation drawn from AGOs (flawless multi-year operation in Antarctica). • Prototype camera field tested in Canada • High cadence, high sensitivity • 1.8Mbits/s taking 3s images

  7. Primary science data daily via VSAT • Stream #1 (1.4kbps) • Monthly backups via disk swapping • Stream #2 (180 kbps)

  8. Ground Based Observatories • S. Mende,UCB • GBO management • GBO I&T • Data dissemination EPO Officer N. Craig,UCB ASIs S. Mende,UCB Install/Maintain/Retrieve E. Dovovan,UC GBO-GMAGs C. T. Russell,UCLA EPO-GMAGs C. T. Russell, UCLA GBO team roles based on heritage • Common I&T at UCB before shipment to sites • ASIs, the largest part of effort (UCB) • GBO-GMAG (UCLA) boards plug into computer in common housing • Fielding in Canada and logistical support is Canadian responsibility • Alaskan sites is UCB responsibility • EPO-GMAGs (copy of existing units) under EPO management

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