BackForwardInstrument:  STIX 

Instrument details
Acronym STIX
Full name X-ray Spectrometer/Telescope
Purpose To provide imaging spectroscopy of solar thermal and non-thermal X-ray emission, to acquire quantitative information on the timing, location, intensity, and spectra of accelerated electrons as well as of high temperature thermal plasmas, mostly associated with flares and/or microflares.
Short description Based on a Fourier-transform imaging technique covering the range 4-150 keV exploiting three units: a) The Sun shades; b) The Imager; and c) The Spectrometer. 64 collimator elements for the energy ranges 15-24, 24-35, 35-57 and 57-100 keV
Background Follow-on of HXT flown on Solar-A
Scanning Technique Observation from a solar orbit by a 8x8 collimator array
Resolution Changing with the distance from the Sun. 400 km at perihelion
Coverage / Cycle Full solar disk at 0.1 s intervals
Mass Power Data Rate


Providing Agency SSO
Instrument Maturity Flown on an R&D satellite
Utilization Period: ≥2018 to ≥2028
Last update: 2017-05-19
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
Mission objectives
Primary mission objectives
  • Solar X-ray flux spectrum
  • Solar X-ray image
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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 flux spectrum1 - primaryNo specific limitation.High spectral resolution, wide dynamic range
Solar X-ray image1 - primaryNo specific limitation.Spectrometry with high spatial resolution