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Lenses and Mirrors
Image Aberrations and Their Presentation
21 other sections not shown
Air Air Air Airy disk amateur aplanatic aspheric astigmatism Back focal length baffle tube beam blue blur bundle calculated Cassegrain telescope catadioptric central obstruction chapter color aberration color correction combination curved focal surface deformation deviations diameter diffraction edge effective focal length elements entering entrance pupil exit pupil eyepiece field curvature field flattener flat-field fluorite focal plane focal ratio focal surface focus glass Houghton image aberrations instrument lateral color LENSDES lenses Maksutov-Cassegrain meniscus negative lens neutral zone Newtonian Off-axis Distance off-axis image optical axis optical performance optical surface optical system optimized parameters paraxial positive lens primary mirror radii radius of curvature ray tracing RAYTRACE refractive index refractor objectives resolving power sagittal focal surfaces Schiefspiegler Schmidt camera Schmidt corrector secondary magnification secondary mirror Seidel shown in fig skew ray spherical aberration spherical mirror spherochromatism spot diagrams tangential and sagittal tilted triplet two-mirror vignetting visual wavelength