@article{Voitsekhovich_Orlov_2016, title={Amplitude fluctuations in curvature sensing: comparison of two schemes}, volume={46}, url={https://journals.unam.mx/index.php/revmexaa/article/view/23684}, abstractNote={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 a ected even by low-level amplitude fluctuations, while the Roddier scheme works well under quite strong amplitude fluctuations.}, number={1}, journal={Revista Mexicana de AstronomĂ­a y AstrofĂ­sica}, author={Voitsekhovich, V. V. and Orlov, V. G.}, year={2016}, month={Jan.} }