Calculates an appropriate number of pixels and and cell size for imaging a measurement set. It uses the perfectly-illuminated circular aperture approximation to determine the field of view and 7 pixel per beam for the cell size.
vis_xds (xarray.core.dataset.Dataset) – input Visibility Dataset
min_dish_diameter (float) – smallest antenna diameter
imsize (list of ints) – number of pixels for each spatial dimension.
cell (list of ints) – Cell size is arcseconds.