THORLABS WFS150, Operation Manual

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62 WFS150 / WFS150C Manual
© <2007> ... Thorlabs GmbH
By default, the graph's vertical axis is scaled automatically. In case some of the
displayed Zernike coefficients are huge compared to other distortions you like to
focus on it is advantageous to switch '
Autoscale ' off. Also in case of fluctuating
Zernike coefficients that cause a permanently changing vertical scale, it is
advantageous to disable 'Autoscale' and to define a fixed range by entering Min.
and Max. values manually.
' Omit Tip + Tilt' is normally switched off and all calculated Zernike
Modes are displayed. But generally, the lowest order modes Piston and the
wavefront's Tip and Tilt are of less interest. Since these lowest order modes may
have a considerable higher amplitude than the higher order modes they are
disturbing and are dispensable. Enable this option to see only Zernike modes with
index 4 and higher.
The option ' Show RMS wavefront variations in Zernike orders ' will change the
displayed data content. Not a single Zernike mode is associated to a graphical
bar but a summation of all Zernike modes of a particular order.