Hi Hans,
Hm, I guess I didn't quite understand the implications of the technology you presented either.
The page on the Bindon concept isn't explicit on this, but it's my impression that the concept is supposed to work only with a 1x magnification, and while I could imagine it might work with slight higher magnifications too, I'm not convinced one would still get a useful dot at the typical magnifications of a birding scope. In that case, the "Docter point" would not be of any real help in target acquisition, and not actually serve the same purpose as the reflex sights we're discussing.
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Hallo
another explanation, in words:
quote
..."Bindon Aiming Concept",
an aiming technique developed by Trijicon founder and optical designer Glyn Bindon. The technique is essentially using the illuminated part of the reticle and its focusing rear eyepiece as a collimator sight.[12] As in any other collimator sight, the user does not actually look through the sight but instead keeps the collimated (infinity) image of the illuminated part of the reticle in focus with the dominant eye while the other eye views the entire field of view to acquire the target. In this both-eyes-open technique the brain superimposes the aiming reticle on the target. An added part of the technique is to shift focus after acquisition to the dominant eye/telescopic image for more accurate shooting. This overcomes the problem of centering or acquiring fast traversing targets common with all telescopic sights.
unquote
taken from:
https://www.youtube.com/watch?v=NpGSKKgWWks
In the description above it is not emphasized clearly enough, that this shift of the eye dominating from the eye seeing 1:1 to the one with a magnified image as soon as its movement slows is apparently working automatically with more than 90% of population without further training. With binocular vision of non identical images the brain usually seems to select eye domination to the side where there is "more to see" , either due to higher magnification and/or less disturbance by perceived (due to magnification) movement.
or as video:
https://www.youtube.com/watch?v=NpGSKKgWWks
Today there are plenty of sniper scopes with built in red dot, but mainly for twilight aiming, not for fast target acquisition. The Docter Point I only mentioned, as a potential modification of ordinary observation type of (monocular) scopes with straight axis eyepieces, usually not fitted with red dots, in order to enable them to be used with the Bindon method.
HW