Open Access
Table 1
EUVS-C measurement requirements.
| Parameter | Value | Comments |
|---|---|---|
| Spectral resolution | 0.1 nm | Resolve emission cores |
| Spectral sampling | 0.02 nm | 5 samples per resolution element |
| Wavelength coverage | 275–284.5 nm | Capture full range of the SBUV index |
| Field of view | > 40 arc minutes circular | 2° × 2° Nominal design |
| Cadence | 1 minute or less | Capture Mg II index variability on 10-minute time scales |
| Radiometric precision | SNR > 150 average @ 277 nm | Measure index with 0.1% precision |
| Detector radiation exposure | < 15 krad over mission lifetime | Tungsten and aluminum shielding |
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