Virtual-real combination Ritchey-Common interferometry.
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DOI: 10.1364/oe.457704
Abstract: Large optical flats play a remarkable role in advanced large-aperture optical systems and the testing of the surface shape error is indispensable for the fabrication. The widely adopted Ritchey-Common test for large optical flats will… read more here.
Keywords: interferometer; real combination; virtual real; ritchey ... See more keywords
Alignment of a Ritchey-Chrétien telescope with primary mirror figure error guided by the rapid measurement of binodal astigmatism.
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DOI: 10.1364/oe.541050
Abstract: Nodal aberration theory (NAT) is a vectorized aberration theory that was developed to describe systems without rotational symmetry. NAT predicts non-rotationally symmetric aberration field dependences for third-order astigmatism and in particular a "binodal" behavior in… read more here.
Keywords: field; aberration; alignment; ritchey ... See more keywords