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Instrument details
Acronym
ST/2
Full name
Galactic gamma-ray spectrometer
Purpose
To measure the differential energy spectra of solar hard X-ray and gamma-ray radiation
Short description
Description not available. Covered spectral range 0.02-10.0 MeV
Background
Part of the instrument package carried by the 5 satellite of the Ionozonde constellation
Scanning Technique
Sun pointing from a drifting LEO
Resolution
N/A (full disk)
Coverage / Cycle
Full solar disk at about 1 s intervals
Mass
Power
Data Rate
Providing Agency
Roscosmos
Instrument Maturity
Flown on an R&D satellite
Utilization Period:
≥2025-02 to ≥2028
Last update:
2021-12-16
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
Subcomponent 1 X-ray spectrometer at LEO Subcomponent 2 Solar X-ray spectrometer [from L1, GEO, LEO] Subcomponent 3 Gamma-ray spectrometer [from GEO, HEO, MEO, LEO] X-ray spectrometer [from GEO, HEO, MEO, LEO]
Mission objectives
Primary mission objectives Solar X-ray flux spectrum Solar gamma-ray flux spectrum Show all Show fewer
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
Variable Relevance for measuring this variable Operational limitations Explanation
Solar gamma-ray flux spectrum 2 - very high No specific limitation. Moderate dynamic range, but associated to X-ray observation
Solar X-ray flux spectrum 3 - high No specific limitation. Coarse spectral resolution, wide dynamic range
Instrument: ST/2