How to Convert Linear Into Angular Field of View?
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How to Convert Linear Into Angular Field of View?
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Re: How to Convert Linear Into Angular Field of View?
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Re: How to Convert Linear Into Angular Field of View?
Steve
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Re: How to Convert Linear Into Angular Field of View?
Why did you divide the 366 by 3? What if the number was 380? Thanks Steve
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Re: How to Convert Linear Into Angular Field of View?
Feet to yards. You can't mix units. Both have to be feet or both yards.Refractordude wrote: ↑Sat Dec 19, 2020 10:47 pmWhy did you divide the 366 by 3? What if the number was 380? Thanks Steve
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Re: How to Convert Linear Into Angular Field of View?
Arc sin 122/1000 = 7.01 degrees
57.3*122/1000 = 6.99 degrees
So, just round off, 7 degrees a standard
Now, if you want the apparent
7*10 = 70 degrees
A wide angle bino view.
Hope this helps,
Steve
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Re: How to Convert Linear Into Angular Field of View?
It should be calculated: angle = 2*arc tan((366/6)/1000). (366/3 = feet to yards, and that halved is one-sided field width.)
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Re: How to Convert Linear Into Angular Field of View?
One degree is 17,45 at 1000 distance, no matter what unit you use. The units should be the same.
A field of 17.45 at 1000 is one degree.
A field of 144 at 1000 is 8.25 degrees
144 m at 1000m is 8.25 degrees
144 yards at 1000 yards is 8.25 degrees
144 feet at 1000 feet is 8,25 degrees.
In a yard there are three feet.
48 yards at 1000 feet is 8,25 degrees ( multiply the yards by 3 to become feet)
Maths behind it:
Imagine an object at 1000 units distance.
This is the radius of a circle.
The outline of the circle is
3,1415 X 2 X 1000= 6283 units
A circle has 360 degrees
One degree is 6283 units divided by 360 = 17,45 units
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