I'd recommend getting the Catseye collimation kit rather than CCDInspector having tried both options.
The Catseye uses multiple reflections so you end up with multiples of the light path to assess errors. CCDInspector is trying to infer collimation errors based on a single focal length derived image.
http://www.catseyecollimation.com/
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When all the images are merged (and there are 4), the accuracy of alignment is actually the best obtainable on the planet as a result of the 4th (faintest inverted) reflection being a result of multiple reflections totaling 7 focal lengths away from your eye - far more resolution than is attainable with a 2-pass laser."