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[ATM] Foucault software

Hello,

I know some foucault software but I try to test a deep curve (D=60mm R=83mm) and no program seem to fulfill my need. My light source at 51mm and the knife at 220mm so the program should allow to put the light source not at RoC.Tex and FigureXP don't allow that. Also I will need to enter conic constant other than -1 or 0.

I find only Sixtest that allow to enter user defined light source distance and conic constant. Byt Sixtest seems to have difficulties with such a short RoC. For example if I enter r^2/R values for a long RoC the result is perfect. But if I enter r^2/R values for 80mm RoC it gives 975.5 nm surface error !

Does anyone know why sixtest is not working with short RoC?
Is there any other software that allow to input user defined light source distance and conic constant ?
Thanks


Here is the file that give perfect result with sixtests:

Plot Caption
60.0 0.0 Mirror, obstruction diameters (mm)
Foucault
800.0 Source distance (0=moving source)
y, mm X, mm
    10 0.125
    20 0.5
    30 1.125
*
0.000 82.704 Conic targets:  b, R (mm)
0.0000 Measurement std deviation, mm
800.0 Longitudinal reading bias, mm


And here is the file that give 975.5 nm error:

Plot Caption
60.0  Mirror, obstruction diameters (mm)
Foucault
80.0 Source distance (0=moving source)
y, mm X, mm
  10 1.25
  20 5
  30 11.25
*
0.000 82.704 Conic targets:  b, R (mm)
0.0000 Measurement std deviation, mm
80.0 Longitudinal reading bias, mm
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