kernel_arithmetics

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

Add, subtract or multiply two kernels.

Parameters:

kernelastropy.convolution.Kernel

Kernel instance.

valueastropy.convolution.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.