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Table 2
Detector performances.
| Chanel | UVB | VIS | NIR |
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| Detector type | e2v CCD44-82 | MIT/LL CCID 20 | Hawaii 2RG |
| (substrate removed) | |||
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| QE | 80% at 320 nm | 78% at 550 nm | 85% |
| 88% at 400 nm | 91% at 700 nm | ||
| 83% at 500 nm | 74% at 900 nm | ||
| 81% at 540 nm | 23% at 1000 nm | ||
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| Gain | High: 0.62 | High 0.595 | 2.12 |
| (e−/ADU) | Low: 1.75 | Low: 1.4 | |
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| Readout noise | Slow: 2.5 | Slow 3.1 | Short DIT: ~25 |
| (e− rms) | Fast: 4.5 | Fast: 5.2 | DIT > 300 s: ~8 |
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| Full frame | 1 × 1, slow-fast: 70–19 | 1 × 1, slow-fast: 92–24 | 0.665 (for a |
| readout time | 1 × 2, slow-fast: 38–12 | 1 × 2, slow-fast: 48–14 | single readout) |
| (s) | 2 × 2, slow-fast: 22–8 | 2 × 2, slow-fast: 27–9 | |
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| Dark current | <0.2 | <1.1 | 21 |
| (e−/pix/h) | |||
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| Fringing | ~5% peak-to-valley | ||
| amplitude | |||
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| Non-linearity | Slow: 0.4% | Slow: 0.8% | <1% up to |
| Fast: 1.0% | Fast: 0.8% | 45 000 ADU | |
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