Foucault test - the homepage of Nicolàs de Hilster, PhD
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://www.dehilster.info/pages/images/foucault-test_20201206210305b.jpg)
Foucault test - the homepage of Nicolàs de Hilster, PhD
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://www.janvangastel.nl/Astronomy/foucault/tester_back.jpg)
Jan van Gastel: A combined Foucault-Ronchi-Lyot tester
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://astrokhan.files.wordpress.com/2020/08/img20200328162954.jpg?w=768)
Foucault Tester – Astro Khan Telescope Making
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://astrokhan.files.wordpress.com/2020/08/img20200329162310.jpg?w=1024)
Foucault Tester – Astro Khan Telescope Making
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://www.atm-workshop.com/assets/img/foucault-12.gif)
Understanding Foucault - The ATMs Workshop
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://i.ytimg.com/vi/BBVXmqkfsz8/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLDUODce8Z9XfwGRHZU-ELGWoOWHbw)
Foucault test of 400 mm diameter spherical mirror (short video)
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://www.atm-workshop.com/assets/img/foucault-05.gif)
Understanding Foucault - The ATMs Workshop
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://www.atm-workshop.com/assets/img/foucault-16.gif)
Understanding Foucault - The ATMs Workshop
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://atm-workshop.com/assets/img/foucault-art.gif)
Understanding Foucault - The ATMs Workshop
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://i.ytimg.com/vi/RTrqI-YopBI/sddefault.jpg)
Foucault Tester
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://www.cloudynights.com/uploads/monthly_05_2016/post-9943-0-37044000-1464164067.png)
Unmasked Foucault testing and related topics - ATM, Optics and DIY Forum - Cloudy Nights
![Foucault test - the homepage of Nicolàs de Hilster, PhD](https://www.atm-workshop.com/assets/img/foucault-18.gif)
Understanding Foucault - The ATMs Workshop