| Shack-Hartmann wavefront sensor test of a telescope at Newtonian focus |
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Setup :
A telescope tested at the Newtonian focus using parallel light. The aberrations of the SH system itself are removed by taking a calibration frame, with a calibration source placed at the focus of Puntino. The incident light illuminating the system should be aberration free. In the case of an astronomical telescope, a natural star is used.
It is not necessary to use parallel light for the test. The measured aberrations will then no longer refer to those for parallel light, but to one particular optical configuration that is used for the test.
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| Lenses |
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| Mirrors |
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Ophthalmic lenses |
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| Human eye |
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| Astronomical Telescopes |
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 telescope at
Newtonian/prime
focus |
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