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1) THEMIS Ground-based All Sky Imager Level-0 Images maxmize
Resource ID:spase://VSPO/NumericalData/THEMIS/Ground/ASI/PT3S
Start:2005-01-01 01:00:00 Observatory:NASA THEMIS GBO Chibougamau Station Cadence:3 seconds
Stop:2016-09-14 08:00:05 Instrument:THEMIS Ground Chibougamau All Sky Imager Resource:NumericalData
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.

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