•   At the reference zero the distance between the mirrors is (taken from a reference presentation "status9nov2020" attached):

                   M1-M2 = 88.029 mm

                   M3-M4 = 84.6895 mm

• The distances between the spherical mirrors ( M3-M4 ) was set to take into account the stability of the mirror ( M3-M4 > Spherical mirror focal length = 85.3 mm)

                 M3-M4 = 90.5 mm

                 we increased the distance between them by 5.8 mm, and moving the mirrors symmetrically, M3 and M4 moved by -2.9 mm (negative defines outer motion)

• Following the definition of M3-M4, fixing of the angle = 2.55637 degrees and frequency (Frep = 876.3636 MHz). Distance between planners (M1-M2)

                 M1-M2 = 80.2 mm

                we decreased the distance between them by 7.83 mm, and moving the mirrors symmetrically, M1 and M2 moved by +3.915 mm (positive defines inward motion)

**** Photo attached is the values on the software at the time.