Free technical calculator
Thermal spot-size calculator
Use a known IFOV to calculate how much of the target one pixel covers, and how far away you can stand while keeping a chosen target large enough for conservative measurement.
Results
- One-pixel footprint
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- 3× target size
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- Conservative 5× target size
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- Maximum distance at 5×
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Use native detector data
Enter the camera's native-resolution IFOV, not a value calculated from an interpolated output image. Digital enlargement makes an image smoother but does not create new detector measurements.