🔭 Telescope Shootout Lab (2D): Aberrations, Focal Ratio, Resolution Limit and Eyepiece Magnification

A 2D telescope optics lab: achromatic refractor, ED apochromat, Newtonian and Schmidt-Cassegrain compared through ray and spot diagrams, Airy-disc double-star images with seeing, chromatic and spherical aberration, coma, central obstruction, focal ratio, resolution limits and eyepiece magnification, true field and exit pupil, with eleven numerical checks.