🔭 Segmented Telescope Mirror: Piston Error, Strehl Ratio and Diffraction Image (2D top view)

Top view of an 18-segment hexagonal telescope mirror with an adjustable piston error. See each segment coloured by its height error and the resulting image of a point source computed from the segment phases. Aperture, wavelength and piston scale follow the 3D lab, with four in-page numerical checks on the Airy limit and the Strehl ratio.