SolarB EIS 4 th SolarB science meeting 3
Solar-B EIS 4 th Solar-B science meeting 3 – 6 Feb. 03 Basic definitions • SEQUENCE Is a collection of commands and their parameters, i. e. commands store • RASTER A basic unit of science operations which define a set of one or more exposures interleaved with fine mirror movements, except in the case of “sit and stare” • LINE LIST A collection of hardware and software window parameters, each software window defines at least one spectral line • STUDY A collection of one or more rasters 29/01/2003
Solar-B EIS 4 th Solar-B science meeting Rules · Sequence repeat [1 to 255] · Raster repeat [1 to 4095] · Exposure repeat [1 to 65535] · Exposure time [50 ms to 10 minutes] 29/01/2003 3 – 6 Feb. 03
Solar-B EIS 4 th Solar-B science meeting 3 – 6 Feb. 03 EIS Operations Solar-B Spacecraft OP/OG Store * 4096 commands * Up to 13 bytes Per command * 4 days max. update 29/01/2003 EIS * 48 on-board sequences (TBC) * Mode transition commands * Pause and Resume Sequence * Other commands (TBD)
Solar-B EIS 4 th Solar-B science meeting Basic sequence structure Mandatory Sequence Header Length, study id, sequence repeats and science control CAM & MHC Set-up commands Mandatory Raster Definition command Start Exposure command Mandatory Sequence Control Terminate or Call another sequence Sequence Checksum 29/01/2003 3 – 6 Feb. 03
Solar-B EIS 4 th Solar-B science meeting 3 – 6 Feb. 03 Raster overview structure P 1 P 2 P 3 P 4 P 5 EIS FOV (4’ Height X 6’ Wide) Raster ID Fine Mirror Initial Position Exposure Loop Counter Data Compression Parameters OCB-X OCB-Y CCD Flush Sequence ID Number of CCD Flushes No. of exposure times per raster (TBC) ASRC control parameters R/O nodes Number of raster repeats ASRC Skip CCD R/O sequence ID Mirror step size Line list 29/01/2003
Solar-B EIS 4 th Solar-B science meeting Line List Structure Mandatory Parameters (Length And Checksum) Camera window parameters (Hardware Window) Number of software windows (Lines) Software window 1 Software window 2 Software window n (Max. 25) 29/01/2003 3 – 6 Feb. 03
Solar-B EIS 4 th Solar-B science meeting 3 – 6 Feb. 03 Sequence and raster repeats Mandatory Seq. HDR Sequence ID. . etc Select Slit/slot position 2 Run raster 1 Raster parameters Start exposure Loop back …… Run raster 2 Raster parameters Start exposure Loop back Sequence Control 29/01/2003 EXPOSURE RASTER SEQUENCE
Solar-B EIS 4 th Solar-B science meeting Sequence chaining Sequence 5. . . Sequence 12 Sequence 20 Call sequence 12 Call sequence 20 Call sequence 5 29/01/2003 3 – 6 Feb. 03
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