Four Lessons in Mirror Testing
What methods and instruments are used to test the optical perfection of convex (parabolic) secondary mirrors for telescopes? - Quora
Matching Ronchi Test - The ATMs Workshop
NASA - The "Not So Heavy Metal Video": James Webb Space Telescope's Beryllium Mirrors
Four Lessons in Mirror Testing
TelTest-3 | telescope test: Interferometric measurement on axis with Teleskop-Austria | Teleskop Mikroskop und Fernglas Shop
Mike Lockwood's Foucault Testing Hall of Shame
Self-Portrait of NASA's James Webb Space Telescope Marks Critical Test | NASA
Parabolizing a Telescope Mirror
Mike Lockwood's Foucault Testing Hall of Shame
Lessons learned from testing the James Webb Space Telescope optical components
OPTICAL TESTS - AstroReflect
Foucault test
Ronchi and Foucault Tests on the 20" f/4.5 Quartz Telescope Mirror - YouTube
Optical test set-up for M3 and M4, 4-mirror telescope design (all... | Download Scientific Diagram
NASA's Webb Successfully Completes Second Super-Cold Optical Test | NASA
Matching Ronchi Test - The ATMs Workshop
The mirror of the James Webb Space Telescope: looking into the past - NASASpaceFlight.com
Ronchi test
NASA's James Webb Space Telescope Completes Primary Mirror Test - NASASpaceFlight.com
Classic Telescope Testing - Classic Telescopes - Cloudy Nights
ESA - Test mirror segments for the James Webb Space Telescope
DIY TELESCOPE primary mirror off-axis TESTING - YouTube
Matching Ronchi Test - The ATMs Workshop
Foucault knife-edge test - Wikipedia
ESA - James Webb Space Telescope's primary mirror unfolded
