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Table 3
E-ELT diaphragm parameters.
| Diaphragm | Internal | External | Spider |
| Diameter (μm) | Diameter (μm) | Thickness (μm) | |
|
|
|||
| Telescope | 231 | 780 | 9.3 |
| Lyot 1 | 243 | 741 | 11 |
| Lyot 2 | 257 | 702 | 13 |
| Lyot 3 | 270 | 669 | 15 |
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