In this test the knife edge is slowly moved into the beam (twice). The knife is moved with steps of 2.3 micron. Apart from a slighty turned down edge in the center, you can see no zones in the mirror. The black square you see is the mirror stand behid the mirror.
That. Is. A. Spectacular. Mirror.
Congratulations. I know that must have been very difficult to get the zones out of that.
tabhorian 2 months ago