BackForwardInstrument:  JEDI 

Instrument details
Acronym JEDI
Full name Extreme Ultra-Violet Imager
Purpose Monitors evolving activity in the chromosphere/ low corona of the Sun’s atmosphere including prominences (an early signature of CME eruption), active regions, coronal holes and solar flares.
Short description

EUV imagery in waveband centred on 195Å (Fe XII). A modified version of the SWAP instrument on Proba-2 https://space.oscar.wmo.int/instruments/view/swap
Background

Part of the Vigil instrument package to monitor the solar activity.
Scanning Technique

N/A
Resolution Spatial resolution : 3.2 arcseconds
Coverage / Cycle FoV : 42.6 x 61.3 arcmin (extended towards Earth out to 2.7 Rsun from Sun-centre). Cadence 2 mins
Mass Power Data Rate

 

Providing Agency NASA
Instrument Maturity Backed by strong heritage
Utilization Period: 2033 to 2041
Last update: 2024-05-28
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 imager [from solar orbit, ecliptic, L5]
Mission objectives
Primary mission objectives
  • Solar EUV flux
  • Solar EUV image
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 EUV flux*4 - fairNo specific limitation.Few channels, moderate dynamic range, full solar disc and corona
Solar EUV image*4 - fairNo specific limitation.Fluxmetry with coarse spatial resolution, corona view included
Solar coronagraphic image1 - primaryNo specific limitation.EUV (10-121.6 nm), observed with occultation