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Instrument details
Acronym
ES
Full name
Electron Spectrometer
Purpose
Spectrometry of the electrons of the solar wind
Short description
Tophat electrostatic analyzer measuring the electron distribution function between 3 eV and 2 keV
Background
DSCOVR is the refurbishment of the Triana satellite stored on the ground in 2000 [named after Rodrigo de Triana, the first of Columbus's crew to sight land in the Americas
Scanning Technique
Interplanetary space from the L1 Lagrange libration point
Resolution
N/A
Coverage / Cycle
Full interplanetary space, nearly continuous
Mass
Power
Data Rate
Providing Agency
NASA
Instrument Maturity
Backed by strong heritage
Utilization Period:
2015-05-28 to ≥2026
Last update:
2021-10-02
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 Energetic particle spectrometer
WIGOS Subcomponents
Subcomponent 1 Solar wind at L1 - Electron sensor
Mission objectives
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
Electron differential directional flux 3 - high No specific limitation. Interplanetary space, low energy (up to 40 keV)
Instrument: ES