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15 February 2025 |
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Article overview
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Kernel Phase and Kernel Amplitude in Fizeau Imaging | Benjamin J. S. Pope
; | Date: |
1 Sep 2016 | Abstract: | Kernel phase interferometry is an approach to high angular resolution imaging
which enhances the performance of speckle imaging with adaptive optics. Kernel
phases are self-calibrating observables that generalize the idea of closure
phases from non-redundant arrays to telescopes with arbitrarily shaped pupils,
by considering a matrix-based approximation to the diffraction problem. In this
paper I discuss the recent history of kernel phase, in particular in the
matrix-based study of sparse arrays, and propose an analogous generalization of
the closure amplitude to kernel amplitudes. This new approach can
self-calibrate throughput and scintillation errors in optical imaging, which
extends the power of kernel phase-like methods to symmetric targets where
amplitude and not phase calibration can be a significant limitation, and will
enable further developments in high angular resolution astronomy. | Source: | arXiv, 1609.0200 | Services: | Forum | Review | PDF | Favorites |
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