get_traced_luminosities

silmaril.imaging.get_traced_luminosities(source_image, source_grid, traced_pixel_corners, nonempty_pixels=None)

Lenses the given source image and returns a 2d array of luminosity values corresponding to pixels on the image plane.

Parameters:

• source_image (numpy.ndarray) – image of the source

• source_grid (Grid) – grid of source plane coordinates

• traced_pixel_corners (numpy.ndarray) – grid of source plane coordinates of the corners of each pixel on the image plane

• nonempty_pixels (np.ndarray) – list of indices of pixels on the image plane that fall on the source image when traced back to the source plane

Returns:

luminosities – array of luminosity values in Jy/arcsec^2

Return type:

numpy.ndarray