More on flat making
18:06
Reading Optical Flats Part 1
13:59
Making a Spectrascope
25:07
Lapping a V Block With a shop made lap
19:39
Measuring Optical Flats - Interference Fringes / Newton’s Rings
7:30
How to Accurately Inspect a Flat Surface
20:19
Using Polishing Pads to Clear the Back of a Telescope Secondary Mirror
11:43
Polishing a Small Spherical Mirror Surface on a Glass Blank
12:56