[ATM] Additional phase contrast and Foucault images

[Dominic-Luc Webb]

These actually look quite impressive relative others I have
seen to date. I see there is some optical aberrations in the
system and you are getting multiple images stacked on top of
each other in the phase contrasted image. Nonetheless, you are
getting some surface information not seen on the simple foucault,
which would offer some justification for using this approach.

Back to the multiple images, you could try playing with the
size and location of the phase plate.

Dominic-Luc Webb