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80–20% penumbrae at a depth of 5 cm measured with PRESAGE® and EBT Film. Profiles for each field are shown in figures 5(a) and 6
| Field size (mm) | Commissioning (mm) | PRESAGE® (OCTOPUS) (mm) | PRESAGE® (CCD) (mm) | EBT (mm) |
|---|---|---|---|---|
| 40 × 40 | 2.7 ± 0.3 | 3.0 ± 0.6 | 2.6 ± 0.2 | |
| 30 × 30 | 2.5 ± 0.3 | 2.4 ± 0.6 | 2.2 ± 0.2 | |
| 20 × 20 | 2.5 ± 0.3 | 2.5 ± 0.6 | 2.2 ± 0.2 | |
| 10 × 10 | 2.2 ± 0.3 | 2.5 ± 0.6 | 2.4 ± 0.2 | 2.0 ± 0.2 |
| 5 × 5 | 1.9 ± 0.3 | 2.7 ± 0.7 | 1.6 ± 0.2 |
