12. Knife-edge testing of a lens with spherical aberration.

12. Knife-edge testing of a lens with spherical aberration.

Ross null lens test - ATM, Optics and DIY Forum - Cloudy Nights

Aberration Correctors, Monochromators, Spectrometers

Parabolizing a Telescope Mirror

Foucault test

The Ronchi Test - MM Research, Inc.

Understanding Foucault - The ATMs Workshop

Star testing optics. - ATM, Optics and DIY Forum - Cloudy Nights

12. Knife-edge testing of a lens with spherical aberration

Knife edge testing of a lens with spherical aberration.

Knife Edge Test for Lens Evaluation