Hello Dave and Vladimir,
This http://rohr.aiax.de/@PSI-VT25.avi file shows my idea of the
phase shifting with the Bath-interferometer. (Size about 5,3 MB)
The fringes moving are caused by pressing the table a slight amount
or if I move myself on the ground. In this matter you get a lot of
different fringes map for calculation. You vary the z-axis. I used
the TouCam/Phillips with a 15 mm Objektiv and a 250/2300 Sphere
and 320x240 dots, 5 fotos/sek and timelimit 2 seconds. I didn't know,
how to make the file smaller. I used the JPG mode.
let's understand what happens with the fringes map, if you reduce the tilt and if you try to
get just one black or white "fringe" on your "fringes map" .
It looks like a Foucault with the interferometer. I used a sphere, but if you use a parabola
in RoC, the surface difference is more than one Lambda, Are you sure, you will get fotos
http://rohr.aiax.de/@PSI-seeing-VT27.avi ... 2 MB
http://rohr.aiax.de/@PSI-seeing-VT30.avi ... 2 MB
The next file shows the "seeing" with my Bath-interferometer.
http://rohr.aiax.de/@PSI-seeing-VT33.avi ... 2 MB