2.4.0 spase://SMWG/Instrument/THEMIS/Ground/CANMAG/GILL/ASI THEMIS Ground Gillam All Sky Imager GILL ASI 2022-02-20T12:34:56.789 2022-02-20T12:34:56.789 THEMIS CANMAG Ground Magnetometer Instruments: Update obsolete aurora.phys.ucalgary.ca URL, HTTP to HTTPS. Metadata submitted by J.M. Weygand on 2022-02-11, reviewed by LFB THEMIS Ground All Sky Imager at Gillam, MB, Canada. 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 (resolution 256 x 256 pixels) 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 sun shades deploy to protect the CCD. GILL is part of the Norstar ASI network. 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 spase://SMWG/Person/James.M.Weygand MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact Canadian Space Science Data Portal http://cssdp.ca/ Web portal to access Canadian GBO data. Norstar Network https://aurora.phys.ucalgary.ca/norstar/asi/asi.html Norstar web resource for ASI data and information. THEMIS All Sky Imager Instrument http://themis.ssl.berkeley.edu/instrument_asi.shtml Brief description of ASI instrument and links to related papers. NSSDC: THEMIS All Sky Imager https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=THEMIS-GB-01 National Space Science Data Center: ASI description. Imager THEMIS Ground All Sky Imager spase://SMWG/Observatory/THEMIS/Ground/CANMAG/GILL