☆Matthijs Burgmeijer on X: Busy building my first Foucault knife-edge tester that I will use to do optical testing to measure the shape of concave curved mirrors used in reflector telescopes. #telescope #

Understanding Foucault - The ATMs Workshop

Stellafane ATM: Understanding Foucatult Testing

A Foucault tester is born - ATM, Optics and DIY Forum - Cloudy Nights

Foucault test: a quantitative evaluation method

Understanding Foucault - The ATMs Workshop

A Foucault tester is born - ATM, Optics and DIY Forum - Cloudy Nights

Understanding Foucault - The ATMs Workshop

Questions about Foucault, couder testing. - ATM, Optics and DIY

Figuring a Telescope Mirror

Knife edge testing of a lens with spherical aberration.

A Foucault tester is born - ATM, Optics and DIY Forum - Cloudy Nights