BackForwardInstrument:  GGAK-E/VUSS-E 

Instrument details
Acronym GGAK-E/VUSS-E
Full name GGAK-E / Solar UV radiation sensor
Purpose To measure the intensity of the solar UV radiation
Short description Fluxmeter to measure the intensity at 121.6 nm (H Lyman alpha-line)
Background Part of the GGAK-E (Heliogeophysical Instrument Complex on Electro-L) package, also confirmed for Electro-M (GGAK-E/M) and adapted to Arctica (GGAK-E/A)
Scanning Technique Sun pointing from GEO
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 operational programme
Utilization Period: 2012 to 2045
Last update: 2021-09-29
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 2
  • Solar magnetograph, solar EUV/X-ray imagery and EUV/X-ray irradiance, both on the Earth-Sun line and off the Earth-Sun line
  • Solar EUV spectrometer [from L1, GEO, LEO]
Mission objectives
Primary mission objectives
  • Solar Lyman-alpha flux
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
Note: * Primary mission objective.
VariableRelevance for measuring this variableOperational limitationsExplanation
Solar Lyman-alpha flux*2 - very highNo specific limitation.H-Ly-alpha at 121.6 nm (EUV/UV boundary)