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IMPACT consists of 7 instruments:
- SWEA (Solar Wind Electron Analyzer)
- STE (Suprathermal Electron Telescope)
- MAG (Magnetometer)
- SEPT (Solar Electron Proton Telescope)
- SIT (Suprathermal Ion Telescope)
- LET (Low Energy Telescope)
- HET (High Energy Telescope)
The first three of these are located on the IMPACT boom/mast that extends a total of 4.5 meters antisunward on each spacecraft. (MAG is 3 meters from the spacecraft, SWEA is at the end of the boom, at 4.5 meters). The latter four instruments make up the SEP subsystem which is mounted on the spacecraft body. The SEP instruments are packaged together except for a part of the SEPT instrument mounted on the spacecraft at a different location for FOV reasons. The mass and power requirements for IMPACT are summarized in a table.
The instruments of IMPACT together comprise an overall investigation approach. Detailed descriptions of the IMPACT instruments can be found in a special issue of the journal Space Science Reviews (2007)
The Boom Suite and SEP Package are active areas on the image below. Click on them for further details on the instruments
