I Have A Math Question
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I Have A Math Question
How can I tell what is the apparent/subjective field of view with these numbers? Right click the image. Thanks
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Re: I Have A Math Question
The Angle of View in the screenshot is the true field. It is 7.5°.
If the magnification is 7x, the apparent field of view is 7 x 7.5° = 52.5° (like a Plössl eyepiece)
If the magnification is 8x, the apparent field of view is 8 x 7.5° = 60° (like a wide field eyepiece)
If the magnification is 10x, the apparent field of view is 10 x 7.5° = 75° (almost as wide as a Nagler eyepiece)
HTH
If the magnification is 7x, the apparent field of view is 7 x 7.5° = 52.5° (like a Plössl eyepiece)
If the magnification is 8x, the apparent field of view is 8 x 7.5° = 60° (like a wide field eyepiece)
If the magnification is 10x, the apparent field of view is 10 x 7.5° = 75° (almost as wide as a Nagler eyepiece)
HTH
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Re: I Have A Math Question
Insufficient data. The two ratios (393.7:3000 and 131.2:1000) and the angle (7.5 degrees) are all saying exactly the same thing: the true field of view (TFOV). To calculate the apparent field of view (AFOV ), you also need the magnification, which is not given.
If we are talking avout 7x binos, theAFOV would be 7x 7.5 = 52.5 degrees. If the magnification is 10x, it would be 10x 7.5 = 75 degrees.
If we are talking avout 7x binos, the
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Re: I Have A Math Question
Got it and thanksRuud wrote: ↑Wed Nov 18, 2020 8:37 pm The Angle of View in the screenshot is the true field. It is 7.5°.
If the magnification is 7x, the apparent field of view is 7 x 7.5° = 52.5° (like a Plössl eyepiece)
If the magnification is 8x, the apparent field of view is 8 x 7.5° = 60° (like a wide field eyepiece)
If the magnification is 10x, the apparent field of view is 10 x 7.5° = 75° (almost as wide as a Nagler eyepiece)
HTH
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