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Light Cone
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Robert May on September 26, 2001 03:34:37 UTC |
Actually, the light cone shown by NEWT and a lot of others starts out at the primary mirror as the diameter of the mirror and gradually converts to the max diameter that the EP will see. The cone really should be drawn to a point at the focal plane. This is also the point at which the aperture stop is put by the process of focusing an EP on the scope as the aperture stop is the focal plane of the EP.
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