code: def from_fits_with_scale(cls, file_path, hdu, pixel_scale):
          
          return cls(array=array_util.numpy_array_2d_from_fits(file_path, hdu), pixel_scale=pixel_scale)
docs: Loads the PSF from a .fits file.
  
          Parameters
          ----------
          pixel_scale
          file_path: String
              The path to the file containing the PSF
          hdu : int
              The HDU the PSF is stored in the .fits file.