Keywords
instrumentation: adaptive optics
techniques: high angular resolution
techniques: high angular resolution
How to Cite
Amplitude fluctuations in curvature sensing: comparison of two schemes. (2010). Revista Mexicana De Astronomía Y Astrofísica, 46(1), 145-152. https://astronomia.unam.mx/journals/rmxaa/article/view/2010rmxaa..46..145v
Abstract
The influence of amplitude fluctuations on the quality of phase reconstruction in curvature sensing is investigated. Two curvature schemes are compared: one with two symmetrically-defocused images (Roddier scheme) and one with a single defocused image (Hickson scheme). It is shown that the accuracy of phase reconstruction with the Hickson scheme is strongly affected even by low-level amplitude fluctuations, while the Roddier scheme works well under quite strong amplitude fluctuations.Similar Articles
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