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| Collimation
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Roger King on March 2, 2004 09:06:53 UTC |
Thanks Robert. That's cleared things up. It was the fact that the optical axis was no longer in the centre that was bugging me, but as you say with perspective, angle and the fact that the ligt cone is NOT elliptical but a conic section, it has now clicked.
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