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☆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 #

☆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 #

☆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 #

☆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 #

Foucault test alignment? - ATM, Optics and DIY Forum - Cloudy Nights

☆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 #

☆Matthijs Burgmeijer on X: Busy building my first Foucault knife

☆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 #

Looking for advice for building Foucault tester - ATM, Optics and

☆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 #

Looking for advice for building Foucault tester - ATM, Optics and

☆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

☆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 #

Figuring a Telescope Mirror

☆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 #

Mike Lockwood's Foucault Testing Hall of Shame

☆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 #

Foucault tester opinion wanted. - ATM, Optics and DIY Forum

☆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

Condition:This Edmonds Scientific foucault Knife Edge mirror tester is average used condition. Please view our photo set and contact us with any

☆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 #

Edmund Scientific Foucault Knife-Edge Optical Mirror Tester and Light Housing

☆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 #

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

☆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 #

Foucault Knife Edge Test