Geometrical parameters in the Hartmann test of aspherical mirrors.
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The Hartmann test has been used with great success to determine figuring errors in large aspherical concave surfaces for telescope mirrors. Here, a mathematical model is presented that allows us to compute the optimum geometrical parameters for this test. It is assumed that the light source is placed near the center of curvature.
[1] I Ghozeil,et al. Screen test for large mirrors. , 1974, Applied optics.