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38 WFS Series
4.1.2
Coordinate Definitions
The WFS series Wavefront Sensors is using a orthogonal right-hand coordinate
system (x,y,z) that is defined as follows:
Imagine you are within the Wavefront Sensor and are looking towards the light
source. Then the x-direction points towards right and the y-direction points up
whereas the optical beam to be analyzed is propagating in z direction towards the
entrance aperture of the Wavefront Sensor.
The graphs within the Wavefront Sensor GUI (Spotfield, Beamview) are defined the
same way, that is the positive x axis points rightwards and the y axis points
upwards.