Has anyone solved the light optical effects of the ten meter range at Ft. Benning?
babyblue_2207-at-hotmail.com.48769.0
Ft. Benning lighting
Moderators: rexifelis, pilkguns
-
Steve Swartz
Re: Ft. Benning lighting
Yes. Same basic process for any poorly lit range (like Crosman Grand Prix- Horrible!).
Add diopters, adjust iris as required.
With normal prescription, and iris fulll open, raise pistol and focus on front sight. Depending on lighting conditions (total, tgt vs. sight, sight), you will have to add diopters until front sight is sharp. Close, relax, open eyes a couple of times to make sure you have "barely enough" (not too much) positive correction.
Note that at this point (if I remember Benning) you will probably have some overall "fuzziness" in sight alignment. You have achieved "best front sight focus" at this point, but it still sucks.
Begin tightening the iris up until teh SIGHTS (don't go too far or you will get a pinhole effect and begin sharpening up teh target also) are tightened up. Again, close, relax, open eyes to make sure you didn't overcorrect.
At this point, if you put on the minimal ("just barely") diopters, you might need to go up another +.25 to compensate for the pinhole effect. This will probably be noticeable after about an hour or so as your eyes tire. Better to just try what you already have and another +.25 back and forth a couple of times to make sure your relaxed eye focus is still on hte front sight.
Adding diopters brings the focal plane in; tightening the iris brings the focal plane out (and lengthens it!).
You want enough iris to reduce the "glare" or "fuzz" of a poorly lit sight area, but need to add diopters to get the front sight in best focus.
HTH
Steve Swartz
: Has anyone solved the light optical effects of the ten meter range at Ft. Benning?
leslieswartz-at-erinet.com.48771.48769
Add diopters, adjust iris as required.
With normal prescription, and iris fulll open, raise pistol and focus on front sight. Depending on lighting conditions (total, tgt vs. sight, sight), you will have to add diopters until front sight is sharp. Close, relax, open eyes a couple of times to make sure you have "barely enough" (not too much) positive correction.
Note that at this point (if I remember Benning) you will probably have some overall "fuzziness" in sight alignment. You have achieved "best front sight focus" at this point, but it still sucks.
Begin tightening the iris up until teh SIGHTS (don't go too far or you will get a pinhole effect and begin sharpening up teh target also) are tightened up. Again, close, relax, open eyes to make sure you didn't overcorrect.
At this point, if you put on the minimal ("just barely") diopters, you might need to go up another +.25 to compensate for the pinhole effect. This will probably be noticeable after about an hour or so as your eyes tire. Better to just try what you already have and another +.25 back and forth a couple of times to make sure your relaxed eye focus is still on hte front sight.
Adding diopters brings the focal plane in; tightening the iris brings the focal plane out (and lengthens it!).
You want enough iris to reduce the "glare" or "fuzz" of a poorly lit sight area, but need to add diopters to get the front sight in best focus.
HTH
Steve Swartz
: Has anyone solved the light optical effects of the ten meter range at Ft. Benning?
leslieswartz-at-erinet.com.48771.48769
-
Ed Hall
An Observation & Question
Here's a question for you more knowledgeable regulation gurus. A couple of years ago I saw someone with a micro light bulb (with wires to a power source in the grip) mounted such that it illuminated the front sight of his Free Pistol. What is the consensus of the TT crowd? Is this in violation of rule 8.4.1.1? Or perhaps a different one? Could this approach be used for AP? Is there a definite prohibition or merely interpretation against this type of device, or would it be considered legal? Please list rule numbers for arguments.
Take Care,
Ed Hall
<a href="http://www.airforceshooting.org/">http: ... ng.org/</a>
<a href="http://www.geocities.com/ed_ka2fwj/">ht ... ka2fwj/</a>
ed_ka2fwj-at-juno.com.48778.48769
Take Care,
Ed Hall
<a href="http://www.airforceshooting.org/">http: ... ng.org/</a>
<a href="http://www.geocities.com/ed_ka2fwj/">ht ... ka2fwj/</a>
ed_ka2fwj-at-juno.com.48778.48769
-
David Levene
Re: An Observation & Question
: Here's a question for you more knowledgeable regulation gurus. A couple of years ago I saw someone with a micro light bulb (with wires to a power source in the grip) mounted such that it illuminated the front sight of his Free Pistol. What is the consensus of the TT crowd? Is this in violation of rule 8.4.1.1? Or perhaps a different one? Could this approach be used for AP? Is there a definite prohibition or merely interpretation against this type of device, or would it be considered legal? Please list rule numbers for arguments.
Leaving aside the likely effectiveness of such a device, I cannot think of any rule which would prohibit it.
As for the "spirit" of 8.4.1.1, I am not sure that it breaks it.
If it turned up on a range I would be minded to allow it (unless anyone can think of a valid reason not to).
dalevene-at-blueyonder.co.uk.48812.48778
Leaving aside the likely effectiveness of such a device, I cannot think of any rule which would prohibit it.
As for the "spirit" of 8.4.1.1, I am not sure that it breaks it.
If it turned up on a range I would be minded to allow it (unless anyone can think of a valid reason not to).
dalevene-at-blueyonder.co.uk.48812.48778