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NEW OPTICAL SYSTEMS
NEW OPTICAL INSTRUMENTS
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aberration curves aberration figure aberration function Airy disc amplitude angle angular spherical aberration aperture ratio approximately astigmatism axial distance axis calculation camera centre of curvature circle of confusion co-ordinates coefficients coma compute concentric mirror system concentric system correction corrector corresponding described deviation diagram diameter diaphragm diffraction diffraction pattern distance h effect entrance pupil equal exit-pupil eye piece field of view fieldglass focal distance focal length focal plane focal point formula geometrical optics given image plane image point intensity intersection lens lenses light distribution longitudinal chromatic aberration luminosity magnification marginal rays microscope missing disc numerical aperture object point object principal plane oblique rays obtained optical system paraxial perpendicular phase grating phase strip photograph radius ray tracing refracting surface refractive index relative aperture represented resolving power sagittal rays ScHMiDT-camera second ScHMiDT-system spectra spherical mirror symmetry telescope thickness third order aberration