BackForwardInstrument:  TEREK-C 

Instrument details
Acronym TEREK-C
Full name Solar XUV Telescope/Coronagraph
Purpose To study large and fine structures in the solar atmosphere
Short description Imaging spectrograph for the X-ray and EUV ranges 0.5-2.5 nm, 17-18 nm, 29-32 nm [including Fe-IX at 17.1 nm, and He-II at 30.4 nm], and around 5.2 and 13 nm. In addition, coronagraph for the range 400-600 nm
Background Consolidated technology
Scanning Technique Sun pointing from a near-polar LEO drifting orbit. Corona view included
Resolution 5000 km at Sun surface
Coverage / Cycle Full Sun disk at about 1-s rate
Mass 45 kg Power 40 W Data Rate

 

Providing Agency Roscosmos
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1994 to 1994-07-15
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
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • Solar EUV flux spectrum
  • Solar EUV image
  • Solar X-ray flux spectrum
  • Solar X-ray image
Secondary mission objectives
  • Solar VIS 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 flux spectrum3 - highNo specific limitation.Coarse spectral resolution, wide dynamic range, disc and corona view included
Solar X-ray image2 - very highNo specific limitation.Spectrometry with coarse spatial resolution, corona view included
Solar EUV flux spectrum4 - fairNo specific limitation.Coarse spectral resolution, moderate dynamic range, solar disc and corona view included
Solar EUV image2 - very highNo specific limitation.Spectrometry with coarse spatial resolution, corona view included
Solar VIS flux3 - highNo specific limitation.Wide dynamic range, corona view included
Solar VIS image4 - fairNo specific limitation.Fluxmetry with coarse spatial resolution, corona view included
Solar white light image4 - fairNo specific limitation.Fluxmetry with coarse spatial resolution, good coverage of the VIS range, corona view included
Solar coronagraphic image3 - highNo specific limitation.X-rays (0.12-1200 keV)