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I am trying to convert Luojia's DN values to radiance following the equation in the attached image. equation to convert DN to radiance

I am using the Raster Calculator in ArcMap for this conversion and the command I am typing is image^(3/2)*10^(-10) but the resulting image is a binary raster with 0 and 1 values. dn_to_rad_result I tried other things as well, like inserting brackets in the equation etc but the result is the same. Why that output? From here you can download the image.

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After applying the same formula using QGIS the resulting raster is a continuous raster which has a range of pixel values 0-0.08. I'm not sure if ArcMap creates a binary raster because it can't capture this small difference.

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