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21 August 2020 Design of an anastigmatic three-mirror telescope using freeform surfaces
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This paper proposes the design of an anastigmatic three-mirror telescope using freeform surfaces for the correction of spherical aberration, coma, astigmatism, and field curvature, allowing a wide field of view (FOV) and high resolution. For the structure of this telescope, it is proposed to use only two optical elements where the primary and tertiary mirrors are integrated into an only optical element and the secondary mirror in the other, thus achieving a considerable reduction in the difficulty of alignment and assembly. To achieve a high performance of the telescope, the system was decentered (offaxis design), avoiding the loss of energy due to the obscuration of the M2 in the on-axis system. In addition, to solve the difficult access to the focus.
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. J. Alvarado-Martínez, F. S. Granados-Agustín, S. Vázquez-y Montiel, and A. A. Cornejo-Rodríguez "Design of an anastigmatic three-mirror telescope using freeform surfaces", Proc. SPIE 11482, Current Developments in Lens Design and Optical Engineering XXI, 114820V (21 August 2020);


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