2.1.0 spase://VMO/NumericalData/THEMIS/Ground/UCLA-GBO/NRSQ/ASI/thumb_PT3S THEMIS GBO All Sky Imager at Narsarsuaq, DK, Greenland. ASI Thumbnails Data. THEMIS-Ground AST 2010-03-29T19:26:35Z THEMIS Ground All Sky Imager at Narsarsuaq: 32 x 32 pixel thumbnails for full ASI images. 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 sun shades deploy to protect the CCD. 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. spase://SMWG/Person/Vassilis.Angelopoulos PrincipalInvestigator spase://SMWG/Person/Stephen.B.Mende CoInvestigator spase://SMWG/Person/Eric.Donovan CoInvestigator THEMIS Summary Plots http://themis.ssl.berkeley.edu/gbo/display.py?view_type=summary Summary plots containing ASI thumbnail images; useful for determining when ASI data exists. spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open THEMIS Web Data http://themis.ssl.berkeley.edu/data/themis/thg/l1/asi/nrsq/ CDF None spase://SMWG/Instrument/THEMIS/Ground/UCLA-GBO/NRSQ/ASI ImageIntensity 2008-10-05T00:00:00 -P7D PT3S thg_ast_nrsq thg_ast_nrsq Thumbnail images of 32x32 pixels; saturation counts for each pixel. counts 32 32 Scalar Photon Intensity thg_ast_nrsq_column thg_ast_nrsq_column Image column number; x-dimension, image width. 32 Other thg_ast_nrsq_row thg_ast_nrsq_row Image row number; y-dimension, image height. 32 Other thg_ast_nrsq_time thg_ast_nrsq_time thg_ast_nrsq_time, UTC, in seconds since 01-Jan-1970 00:00:00 Not including leap seconds s 0.0 5.0E9 NaN Temporal