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Influence of Seidel distortion on combining beams from a phased telescope array

机译:Seidel畸变对相控望远镜阵列合成光束的影响

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摘要

When beams from an array of afocal telescopes are presented to a beam-combining telescope, tilt errors of the beam wave fronts with respect to the combined wave front place limits on the achievable field of view (FOV); these limits, to the best of our knowledge, have not previously been correctly described in the literature. We show that if the front-end telescopes have just the right Seidel distortion coefficient, then tilt error does not limit the FOV. If this is not the case, at least small FOV's can still be obtained, even if the FOV is not centered on the on-axis direction.
机译:当将来自组合式无焦点望远镜阵列的光束提供给组合光束望远镜时,光束波前相对于组合波前位置的倾斜误差会限制在可达到的视场(FOV)上;就我们所知,这些限制以前并未在文献中正确描述。我们表明,如果前端望远镜的Seidel失真系数恰到好处,那么倾斜误差就不会限制FOV。如果不是这种情况,即使FOV不在轴上方向上居中,仍至少可以获得较小的FOV。

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