[Feature request] Take maximum k-length of sampling points into account for saving some 1D Fourier transformations

In order to achieve what radio astronomers call "super resolution", they choose the resolution of space to be finer than the Nyquist frequency associated with the longest baseline, i.e. the sample in Fourier space which is the farthest away from the zero mode. By taking this into account, a considerable fraction of the 1D Fourier transformations could be saved.