kernel_arithmetics

astropy.convolution.kernel_arithmetics(kernel, value, operation)

Add, subtract or multiply two kernels.

Parameters:

kernel : astropy.convolution.Kernel

Kernel instance

value : kernel, float or int

Value to operate with

operation : {‘add’, ‘sub’, ‘mul’}

One of the following operations:

• ‘add’

  Add two kernels

• ‘sub’

  Subtract two kernels

• ‘mul’

  Multiply kernel with number or convolve two kernels.