I have a couple lenses here and want to make a mag scope to take better images well testing with
Ronchi or Foucault but I am perplexed to say the least...
Can someone please help me understand how this is suppose to work.I have tried holding to two lenses
behind the screen but that only magnifies the screen, now if I hold one in front of and the other behind the
screen then bingo it works and works well from what I could see.
I take it I need to make a rig with the Ronchi grating in between the two lenses but how does one know where
to place the grating or is it a trial and error kind of approach to working this out or am I totally off base with this.
How do you set up for it?