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Table 3.
SO/PHI nominal optical parameters.
| HRT | FDT | ||
|---|---|---|---|
| Working wavelength | λ0 | 617.3 nm ± 0.1 nm | 617.3 nm ± 0.1 nm |
| Effective focal length | feff | 4125.3 mm | 579 mm |
| Field of view | αFOV | 0.28° ×0.28° | ⌀ 2° |
| Entrance pupil diameter | D | 140 mm | 17.5 mm |
| Effective F-ratio | F# | 29.5 | 33.1 |
| PMP telecentricity | < 0.3° | < 0.3° | |
| Effective focal length at etalon focus | fetalon | 7920 mm | 1111.7 mm |
| F# at etalon focus | F#etalon | 56.6 | 63.5 |
| Etalon telecentricity | < 0.23° | < 0.23° | |
| Used detector size | 2048 × 2048 pixels | 2048 × 2048 pixels | |
| Pixel size | dpixel | 10 μm | 10 μm |
| Plate scale | αpixel |
 |
 |
| Image quality | σWFE | ≤λ0/14 (diffraction limit) | ≤λ0/14 (diffraction limit) |
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