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For visual use the only way to use it is to buy the correct spacing rings and screw it onto the eyepiece, which then becomes a unit which goes into the focusser as normal... Thats how Wayne was using it and why you got all those spacing rings, which may or may not suit your low power eyepiece..
Check the Alpine astro website for list of all the rings required for various eyeieces. You don't don't want to use it for high powere observation as it induces Spherical Aberration on -axis, which is not going to effect prime focus photography
Mark
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