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Looking at your triffid images and the CCDinspector plot it looks like the light cone is not intersecting the centre of the CCD. I'd check the focuser is square and the secondary is positioned correctly as a first step. The catseye tools will be the best thing to get the collimation right but you need to have the focuser right and the secondary in the right position to get the best out of the catseye gear.
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