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In-Flight Performance of the ICON EUV Spectrograph
Eric J Korpela1, Martin M Sirk1, Jerry Edelstein1
1Space Sciences Laboratory, University of California, Berkeley, CA USA.
Space Science Reviews
|April 3, 2023
Summary
The Ionospheric Connection Explorer EUV spectrometer successfully met performance requirements for observing the lower ionosphere. Its data, including raw products, are vital for determining ion density profiles.
Area of Science:
- Space Physics
- Atmospheric Science
- Ionospheric Physics
Background:
- The lower ionosphere is crucial for understanding space weather and atmospheric interactions.
- Observing the ionosphere requires specialized instruments capable of detecting specific emission lines.
Purpose of the Study:
- To present in-flight performance measurements of the ICON EUV spectrometer.
- To validate the instrument's capability in observing the lower ionosphere.
- To document instrument performance over the first two years of operation.
Main Methods:
- In-flight calibration and performance measurements.
- Spectroscopic observation of OII emission lines (61.6 nm and 83.4 nm).
- Tracking instrument performance changes due to microchannel plate charge depletion.
Main Results:
- The ICON EUV spectrometer met all science performance requirements.
- Observed and expected changes in instrument performance were tracked.
- Raw data products are available for further analysis.
Conclusions:
- The ICON EUV spectrometer is a reliable instrument for ionospheric research.
- The collected data supports the determination of O+ density profiles.
- Instrument performance degradation is understood and monitored.
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