Open Access
Table 2
Optical specifications of L1.
| L1 (mm) | |
|---|---|
| Aperture of O1 | 150 |
| Focal length of O1 | 2250 |
| Distance O1 – O2 | 1850 |
| Focal length of O2 | −745 |
| Distance O2 – F | 103 |
| Distance F – O3 | 103 |
| Focal length of O3 | 252 |
| Distance O3 – camera | 174 |
| Focal length of the whole instrument | 1350 |
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