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Building a large affordable optical-NIR telescope (I): an alternate way to  handle segmented primary mirror | Experimental Astronomy
Building a large affordable optical-NIR telescope (I): an alternate way to handle segmented primary mirror | Experimental Astronomy

CHEAP INTERFEROMETER FOR OPTICAL TESTING OF TELESCOPE MIRRORS. (with  Pictures) - Instructables
CHEAP INTERFEROMETER FOR OPTICAL TESTING OF TELESCOPE MIRRORS. (with Pictures) - Instructables

Advice and Help - New 6" F/8 Mirror testing - ATM, Optics and DIY Forum -  Cloudy Nights
Advice and Help - New 6" F/8 Mirror testing - ATM, Optics and DIY Forum - Cloudy Nights

Optical Testing of Parabolic Mirrors : 9 Steps (with Pictures) -  Instructables
Optical Testing of Parabolic Mirrors : 9 Steps (with Pictures) - Instructables

Interferometrie und optische Tests: März 2015
Interferometrie und optische Tests: März 2015

Figuring a Telescope Mirror
Figuring a Telescope Mirror

Mike Lockwood's Foucault Testing Hall of Shame
Mike Lockwood's Foucault Testing Hall of Shame

Comparing Optical Tests - ATM, Optics and DIY Forum - Cloudy Nights
Comparing Optical Tests - ATM, Optics and DIY Forum - Cloudy Nights

Foucault test
Foucault test

Figuring a Telescope Mirror
Figuring a Telescope Mirror

Ronchi Test Calculator
Ronchi Test Calculator

Handheld Ronchi Tester
Handheld Ronchi Tester

Ronchi Test Calculator
Ronchi Test Calculator

Lateral Image Test
Lateral Image Test

INTERFEROMETRY TESTS RESULTS - AstroReflect
INTERFEROMETRY TESTS RESULTS - AstroReflect

INTERFEROMETRY TESTS RESULTS - AstroReflect
INTERFEROMETRY TESTS RESULTS - AstroReflect

TESTING/CORRECTIONS – Astro Khan Telescope Making
TESTING/CORRECTIONS – Astro Khan Telescope Making

Trying to Test a 50-year-old Cassegran Telescope | Guy's Math & Astro Blog
Trying to Test a 50-year-old Cassegran Telescope | Guy's Math & Astro Blog

Ronchi Test Calculator
Ronchi Test Calculator

Dick Parker's Telescope Mirror Workshop: Cassegrain Telescope Project
Dick Parker's Telescope Mirror Workshop: Cassegrain Telescope Project

Matching Ronchi Test - The ATMs Workshop
Matching Ronchi Test - The ATMs Workshop

Figuring and testing a long focus hyperboloid - ATM, Optics and DIY Forum -  Cloudy Nights
Figuring and testing a long focus hyperboloid - ATM, Optics and DIY Forum - Cloudy Nights

Matching Ronchi Test - The ATMs Workshop
Matching Ronchi Test - The ATMs Workshop

Going parabolic: The difference between a Ronchi, Foucault, and a Caustic  test
Going parabolic: The difference between a Ronchi, Foucault, and a Caustic test

TESTING/CORRECTIONS – Astro Khan Telescope Making
TESTING/CORRECTIONS – Astro Khan Telescope Making