Any mathematicians here?....serious question

[RS3]

Planning on building a blind for crp in kansas. Need help figuring what my field of view would be at different distances.

Draw an upside down T. Enclose it with an equilateral triangle. Cut the top corner off the triangle with a line that represents 3 feet. This line should parallel the base of the triangle. Erase everything above this line. How long is the base line if the "triangle" height is 20, 30, and 40 yards long?

This was hard to put in words, hopefully it makes sense to someone that can figure out the answer.

[pykiller]

What unit?

[TexMax]

So by top corner you mean the 'bottom'. And by base your talking about the 'top'. Correct?


Edit, I don't feel like doing the math. In the grand scheme of things what you're 'cutting off' is insignificant. Disregard it. Your fov at any range will be r= 1/2a cot pie/3 where r= 1/2 your fov and a is distance

[RS3]

What unit?

5

[TallTexan]

Like this?

[TexMax]

[ATTACH]343803[/ATTACH]

Like this?

I don't think so. Imagine a blind at the tip of a triangle. Except the tip is 3' wide to accommodate a blind. The 'base' being at the farthest point from the blind. Unless that's what you drew

[TexMax]

So (approximately) 23, 35, and 46 yards

[TallTexan]

I don't think so. Imagine a blind at the tip of a triangle. Except the tip is 3' wide to accommodate a blind. The 'base' being at the farthest point from the blind. Unless that's what you drew

I just tried to follow his instruction

[silentstare]

this is right down my alley, but I need some clarification.
Is your question about the size of hole you need to cut in your blind to see a given FOV at a given distance? Are you trying to minimize the size of openeing for optimum concealment? For example if you cut a 1x1"" opening you want to know if you could see 10 foot area at 10 foot and 100 foot area at 30 foot etc??

Or are you talking about looking through a pair of binocs or scope?

[RS3]

I found some grid paper and figured it out to 23 yards before I ran out of room on the page. At 20 yards away I will have a left to right field of view that is 24 yards wide. Think i will call the blind solitary confinement or the hole. It's gonna be small, but hopefully not as cold as sitting in the weeds! And more scent controlling!

[silentstare]

good luck with your new stand

[TexMax]

You're welcome


What i posted in my first one was wrong btw. Fov= 2(distance)/1.732 + a yard.

[texag93]

[KHoes203]

If you are trying to figure out the size of the hole for a field of view that is way to much math IMO. Just start small and go bigger as needed.

[txfireguy2003]

If I understand this correctly, your shooting window would have to be 3 feet wide. That sounds pretty large to me, but maybe I'm not seeing this right. Also, I don't think you can actually figure this problem out without more information, if I'm understanding the question right, of course. As I understand it, you're asking what you'll be able to see out of a 3' wide opening, based on distance, correct? If that's the case, it will depend on how far away from the opening your eye is. For example, if you're sitting 5 feet behing the opening, you can only see so much, but if you move up and put your face even with the opening, you, theoretically, could see everything in a 180 degree arc. From what you've posted, being an equilateral triangle, you're giving yourself a 60 degree "window", that is 3 feet wide. This means that you are sitting about 3.35 ft behind the window. Okay, that's plausible, and if that's the case, you will be able to see 23 yards and 20, 34.5 yards as 30, and 46 yards as 40, just like you said. However, if you moved up to....say 2.5 feet from the window (yes, I know, you have to be able to draw a bow or maneuver a rifle, just for the sake of argument), you would be able to see 48 yards at 40. Not a lot of gain, I know, but you see the point I'm making, you can move around in your blind to change your field of view. Also, you can lean to one side, and that would throw the whole calculation off (or at least make it too hard for me to figure at this time of night), but would allow you to see more to the sides.