This webpage contains figures of the INT's optical systems and their characteristics.
Optical layout of the INT
Optical layout of the WHT
| The layout of the INT (with only the primary mirror), showing an Y ray fan. The effect of the central obscuration could be seen. | The PSF (point Spread Function) about an on-axis object point (wavelength 550 nm) - the box size is 10 um |
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| The layout of the INT, with the primary and secondary mirrors | The PSF (point Spread Function) about an on-axis object point (wavelength 550 nm) - the box size is 20 um |
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