Introduction to optics and elasticity -- Dioptrics and elasticity : variable curvature morrors (VCMs) -- Active optics and correction of third-order aberrations -- Optical design with the Schmidt concept : telescopes and spectrographs -- Schmidt correctors and diffraction gratings aspherized by active optics -- Theory of shells and aspherization of axisymmetirc mirrors : meniscus, vase and closed forms -- Active optics with multimode deformable mirrors (MDM) vase and mensicus forms -- Own weight flexure and figure control of telescope mirrors -- Singlet lenses and elasticity theory of thin plates -- X-ray telescopes and elasticity theory of shells.