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| Research on the Polynomial for Fitting Cylindrical Surface in Rectangular Aperture |
| Tongda College of Nanjing University of Post &Telecommunications;
Laboratory of Lake Environment Remote Sensing Technologies of Huaiyin Institute of Technology;
Key Laboratory of Astronomical Optics & Technology, Nanjing Institute of Astronomical Optics & Technology
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Abstract In this paper, the fitting method of cylindrical mirror with rectangular aperture is studied. The extended Zernike polynomial and Chebyshev polynomial in rectangular aperture are used as the polynomial of surface fitting respectively. The wavefront is reconstructed from the surface data. The corresponding relationship between Seidel aberration and the fitting polynomial is analyzed and compared. The Chebyshev polynomial shows the good ability of separating aberration than the extended Zernike polynomial in rectangular aperture.
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Published: 16 January 2019
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