BackForwardInstrument:  HI2-Vigil 

Instrument details
Acronym HI2-Vigil
Full name Heliospheric Imager 2 - Vigil
Purpose Monitors CME propagation through vast under- sampled region between outer corona and 1 AU. Also gives information on the background solar wind.
Short description Optically modified version of STEREO-A heliospheric imager:
Background Part of Vigil solar monitoring package
Scanning Technique
Resolution Spatial resolution 6 arc mins
Coverage / Cycle Full 50 deg field of view taken every 30 mins
Mass Power Data Rate


Providing Agency ESA
Instrument Maturity Backed by strong heritage
Utilization Period: 2031 to 2039
Last update: 2022-12-15
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 VIS imager [from solar orbit, ecliptic, L5]
  • Solar coronagraph and heliospheric imagery both on the Earth-Sun line and off the Earth-Sun line (e.g. L5 point)
  • Heliospheric imager [from solar orbit, ecliptic, L5]
Mission objectives
Primary mission objectives
  • Heliospheric 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.