4 August 2016 Spectrally dispersed Fourier-phase analysis for redundant apertures
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Abstract
One can process images acquired by single telescopes using adaptve optics (AO) in a manner similar to data usually acquired with a non-redundant aperture mask. Because it relies on a linearization of the phase transfer equation that describes the value of the phase in the Fourier-plane, the kernel- and eigen-phase analysis of images corrected by adaptive-optics is intrinsically limited to a regime of aberration where the rms error is less than the wavelength. This paper outlines the properties of an extension of the Fourier-phase analysis method, here applied to a set of spectrally dispersed data, similar to those produced by an intergral field spectrograph. Given sufficient wavelength coverage, the original baseline mapping model can be used to produce novel spectrally dispersed kernel-phase information for any aberration regime.
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Frantz Martinache, Frantz Martinache, "Spectrally dispersed Fourier-phase analysis for redundant apertures", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 990712 (4 August 2016); doi: 10.1117/12.2233395; https://doi.org/10.1117/12.2233395
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