Sensor · Spaceborne

Extreme Ultraviolet and X-ray Irradiance Sensors

Missions → GOES-17 (Operational) , GOES-16 (Operational) , GOES-19 (Operational) , GOES-18 (Operational)

GOES-R Series extreme ultraviolet and X-ray irradiance sensors for solar and space-weather monitoring.

Sensor

The Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS) monitor solar activity through two main sensors: the Extreme Ultraviolet Sensor (EUVS) and the X-Ray Sensor (XRS). XRS monitors solar flares and helps predict solar proton events. EUVS measures changes in solar extreme-ultraviolet irradiance that drive variability in the upper atmosphere.^[1]

EXIS flies on the GOES-R series spacecraft. It resides on the Sun-Pointing Platform, mounted in the yoke of the solar array. Its additional subsystems include the EUVS/XRS Electrical Box and the Sun Positioning Sensor.^[2]^[1]

The instrument has a mass of 30.0 kg and a power figure of 40 watts. Its products include extreme-ultraviolet and X-ray solar flux. EXIS supplies data for space-weather warnings of radio blackouts.^[1]^[3]

Operator pricing

Pricing not publicly listed by operator

Supply chain position

carried by GOES-17

carried by GOES-16

carried by GOES-19

carried by GOES-18

Sources

[1]Extreme Ultraviolet and X-ray Irradiance Sensors, NOAA NESDISagency doc2026-11-01
[2]GOES-R Series instruments overviewagency doc2026-11-01
[3]GOES-R Series data products overviewagency doc2026-11-01
[4]LASP team attends launch of instrument to monitor space weatheroperator press2026-11-01
[5]Go for launch: the next GOES satellite to include instrument built at CU Boulderoperator press2026-11-01
[6]GOES-17 satellite payload record, WMO OSCARagency doc2026-11-01

Cite https://eo-atlas.org/products/sensor/exis Markdown twin → Field definitions → Suggest a correction →

How to cite this page

Plain text

Extreme Ultraviolet and X-ray Irradiance Sensors. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/products/sensor/exis (CC BY 4.0)

BibTeX

@misc{eoatlas:products:sensor:exis,
  title = {Extreme Ultraviolet and X-ray Irradiance Sensors},
  author = {{EO-Atlas}},
  publisher = {SpectraWorks B.V.},
  note = {CC BY 4.0},
  url = {https://eo-atlas.org/products/sensor/exis}
}