calc_image_cell_size

calc_image_cell_size(vis_xds, min_dish_diameter)[source]

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.

Parameters
  • vis_xds (xarray.core.dataset.Dataset) – input Visibility Dataset

  • min_dish_diameter (float) – smallest antenna diameter

Returns

  • imsize (list of ints) – number of pixels for each spatial dimension.

  • cell (list of ints) – Cell size is arcseconds.