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Table 4
The SunCET spectrograph SNRs for various strong emission lines. Irradiances are from SDO/EVE (Woods et al., 2011). SNR at all heights is above the level that ISO 12232 defines as “excellent”.
| Wavelength (Å) | 171 | 193.5 | 195 | 304 | 335 |
| Irradiance (W/m2/sr) | 6.7 × 10−4 | 4.5 × 10−4 | 6.3 × 10−4 | 1.0 × 10−3 | 1.0 × 10−4 |
| Integration (s) | 10 | 10 | 10 | 10 | 10 |
| Counts/pixel | 737 | 495 | 693 | 1100 | 110 |
| SNR | 272 | 237 | 282 | 444 | 145 |
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