10 December 1999 High-resolution imaging through atmospheric turbulence: link between anisoplanatism and intensity fluctuations
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Abstract
High resolution imaging with adaptive optics and numerical image restoration processing is now an operational reality for ground-based telescopes. It provides a real-time compensation for turbulence degraded images. However, these correction techniques are only effective in a limited field of view due to anisoplanatism. For endoatmospheric applications, strong intensity fluctuations may also limit the degree of correction. In this paper, we estimate the isoplanatic domain as a function of the degree of correction of high resolution imaging systems and the transition between weak and strong intensity fluctuation regimes. We show that the saturation onset of scintillation corresponds to an isoplanatic field which becomes smaller than the resolution of adaptive optics systems.
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Marc Sechaud, Frederic Mahe, Thierry Fusco, Vincent Michau, Jean-Marc Conan, "High-resolution imaging through atmospheric turbulence: link between anisoplanatism and intensity fluctuations", Proc. SPIE 3866, Optics in Atmospheric Propagation and Adaptive Systems III, (10 December 1999); doi: 10.1117/12.371314; https://doi.org/10.1117/12.371314
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KEYWORDS
Scintillation

Turbulence

Adaptive optics

Image resolution

Image processing

Spherical lenses

Astronomy

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