BackForwardInstrument:  SXI 

Instrument details
Acronym SXI
Full name Solar X-ray Imager
Purpose Space Weather - Solar activity monitoring
Short description Sun imaging in the range 0.6-6 nm (soft X-rays)
Background New development
Scanning Technique Sun pointing from GEO
Resolution 3700 km at the Sun surface
Coverage / Cycle Full Sun disk at 1 min intervals
Mass Power Data Rate


Providing Agency NOAA
Instrument Maturity Flown on operational programme
Utilization Period: 2003-04-01 to 2007
Last update: 2017-05-18
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Solar and space environment monitors
  • Solar activity monitor
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • Solar X-ray image
Secondary mission objectives
  • Solar X-ray flux
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Tentative Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
VariableRelevance for measuring this variableOperational limitationsExplanation
Solar X-ray flux3 - highNo specific limitation.Few channels, wide dynamic range
Solar X-ray image4 - fairNo specific limitation.Fluxmetry with coarse spatial resolution