Casting a light weight telescope mirror (all steps in the process)
32:52
Cutting telescope mirror blanks out of a thick glass tabletop
21:31
How to Make a Pitch lap and Polish a telescope mirror!
23:59
Making a Monolithic Telescope Part 1: Optical Design and Aspherics.
12:20
Spin Casting A Slumping Mold For Fast Telescope Mirrors - 2nd Attempt
17:04
How does a "first surface" mirror work? (2^15 sub special!)
12:27
Home made Vacuum chamber 2.0 for telescope coating mirror
22:25
Adjustable Setting Circles For Dobsonian Telescopes
13:49