Using as an example Landsat 8 bands:
Does pansharpening band enhace only visible range and therefore can I use it only for analysis connected with visible spectrum? Or I can pansharpen every possible combination of raster composition so I can get an image with NIR/SWIR/Coastal/Cirrus included? If the latter is correct, will the algorythm perform some not-so-accurate 30->15m interpolation or it's 'pure' 15m? I see in the specs of L8 that Pan band ranges from 0.50 to 0.68 µm what covers G and R band what leads me to the first hypothesis, but I have seen some other compositions that were pansharpened.