How does reticle point at the target ?
In a purely mechanical and optical scope(no electronics, no software), how does reticle or crosshair point directly at the target?
What is the mechanism that enables reticle to aim at the target?
What is the mechanism that enables reticle to aim at the target?
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The reticle doesn't "point" anywhere. It is only half of the system, and the fixed part at that. Where a round hits depends on where the rifleman's eye is located behind the exit lens.
When the rifleman's eye is correctly and repeatably located on the optical axis this is the desired condition for accurate and repeatable shooting. When that is the case, placing the reticle over the target causes the round to land on-target when (a) the optical system is calibrated correctly and (b) the rifle is located at the same distance from the target for each shot..
If the rifleman's eye is located off the optical axis, even if the optical system is calibrated correctly and the rifle is located the same distance from the target for each shot, placing the reticle over the target will cause the round to land off-target. Only when the rifleman's eye is on the optical axis can a reticle be considered to be an accurate aiming aid.
When the rifleman's eye is correctly and repeatably located on the optical axis this is the desired condition for accurate and repeatable shooting. When that is the case, placing the reticle over the target causes the round to land on-target when (a) the optical system is calibrated correctly and (b) the rifle is located at the same distance from the target for each shot..
If the rifleman's eye is located off the optical axis, even if the optical system is calibrated correctly and the rifle is located the same distance from the target for each shot, placing the reticle over the target will cause the round to land off-target. Only when the rifleman's eye is on the optical axis can a reticle be considered to be an accurate aiming aid.
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>> "calibrated setting"
What is calibrated setting? Is it when scope is turned ON will objective lens covered? If yes, what is calibrated?
>> "The reticle doesn't "point" anywhere. It is only half of the system"
I don't understand this statement. Please explain.
>> "exit lens"
Is that ocular lens or objective lens ?
>> "optical axis"
What is optical axis?
What is calibrated setting? Is it when scope is turned ON will objective lens covered? If yes, what is calibrated?
>> "The reticle doesn't "point" anywhere. It is only half of the system"
I don't understand this statement. Please explain.
>> "exit lens"
Is that ocular lens or objective lens ?
>> "optical axis"
What is optical axis?
Scope is short for telescope, the difference is that there is in approximately the middle an aiming point it could be a dot, a post, a cross-hair, a mix of a post and a cross-hair, When you initially sight in the scope (calibrate it) +/- 0 elevation +/- 0 windage at a measured distance. All bullets travel in an arc, usually the higher the velocity the shallower the arc. all bullets as they travel through air slow down and the bullet curves downward. One would adjust the scope so that the bullet hits the target exactly where the cross hairs were when the rifle is fired. Depending upon the weight of the bullet, the muzzle velocity where the rifle is aimed to hit a target will be different than if you looked down the barrel (this is called bore sighting) the bullet will be higher or lower (due to trajectory) than where the barrel is aimed at.
the optical axis is the center of the eye-piece in a straight line to the center of the objective lens.
What is calibrated setting? Is it when scope is turned ON will objective lens covered? I'm guessing you meant to say 'when the objective lens is covered)
Most scopes are not electrical in operation they are optical devices (there is no on/off)
Perhaps this video may help https://www.youtube.com/watch?v=l8EO80iqOyE
the optical axis is the center of the eye-piece in a straight line to the center of the objective lens.
What is calibrated setting? Is it when scope is turned ON will objective lens covered? I'm guessing you meant to say 'when the objective lens is covered)
Most scopes are not electrical in operation they are optical devices (there is no on/off)
Perhaps this video may help https://www.youtube.com/watch?v=l8EO80iqOyE
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