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Instrument details
Acronym
SECCHI/EUVI
Full name
SECCHI / EUV Imager
Purpose
To observe emission lines of corona and upper chromosphere
Short description
EUV narrow-bandpass Ritchey Chretien telescope (98 mm aperture) for lines of He II (30.4 nm), Fe IX (17.1 nm), Fe XII (19.5 nm) and Fe XV (28.4 nm)
Background
Part of the package "SECCHI" (Sun-Earth Connection Coronal and Heliospheric Investigation)
Scanning Technique
Array of 2048x2048 detectors. The Sun is observed by two STEREO satellites moving in the plan of Ecliptic with different viewing conditions, so as to implement stereoscopy. Corona view included
Resolution
2500 km at Sun surface
Coverage / Cycle
Full Sun disk, one image each 1 min
Mass
Power
Data Rate
Providing Agency
NRL
Instrument Maturity
Flown on an R&D satellite
Utilization Period:
2007-01-21 to 2014-10-01
Last update:
2021-12-16
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 EUV spectrometer [from solar orbit, ecliptic, L5] Solar EUV imager [from solar orbit, ecliptic, L5] Solar coronographic imager [from solar orbit, ecliptic, L5] Subcomponent 3 Solar coronal magnetic field imager [from solar orbit, ecliptic, L5]
Mission objectives
Primary mission objectives Solar EUV flux Solar EUV image Opportunity objectives Solar coronagraphic image Show all Show fewer
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
Variable Relevance for measuring this variable Operational limitations Explanation
Solar EUV flux 4 - fair No specific limitation. Few channels, moderate dynamic range, full solar disc and corona
Solar EUV image 4 - fair No specific limitation. Fluxmetry with coarse spatial resolution, corona view included
Solar coronagraphic image 3 - high No specific limitation. EUV (10-121.6 nm), observed with occultation
Instrument: SECCHI/EUVI