Open Access
Table 3
The aperture and focal length with different FOV meeting the star detection requirements (mm).
| F-number | 4°FOV |
6°FOV |
10°FOV |
15°FOV |
||||
|---|---|---|---|---|---|---|---|---|
| Effective aperture | Focal length | Effective aperture | Focal length | Effective aperture | Focal length | Effective aperture | Focal length | |
| 1 | 600 | 600 | 460 | 460 | 350 | 350 | 292 | 292 |
| 2 | 420 | 840 | 320 | 640 | 260 | 520 | 200 | 400 |
| 3 | 350 | 1050 | 260 | 780 | 200 | 600 | 164 | 489 |
| 4 | 300 | 1200 | 230 | 920 | 180 | 720 | 144 | 576 |
| 5 | 270 | 1350 | 210 | 1050 | 160 | 800 | 130 | 650 |
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