BackForwardInstrument:  SUF 

Instrument details
Acronym SUF
Full name Spectrometer for measuring UV radiation from the Sun
Purpose Monitoring of solar UV radiation
Short description Description not available. Presumably, EUV spectrometer for the range 50-130 nm, inclusive of the H Lyman-alpha line ar 121.6 nm
Background Part of the instrument package carried by the Zond satellite of the 5-satellite Ionozonde constellation
Scanning Technique Sun pointing from a drifting LEO
Resolution N/A (full disk)
Coverage / Cycle Full solar disk at 1 s intervals
Mass Power Data Rate


Providing Agency Roscosmos
Instrument Maturity Flown on an R&D satellite
Utilization Period: ≥2017 to ≥2020
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 EUV flux spectrum
  • Solar Lyman-alpha 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 EUV flux spectrum4 - fairNo specific limitation.Coarse spectral resolution, moderate dynamic range
Solar Lyman-alpha flux2 - very highNo specific limitation.H-Ly-alpha at 121.6 nm (EUV/UV boundary)