Afaik Webb is mainly an infrared telescope, which is why it has such a large heat screen and is so far from the earth. None of what you see from it is visible light really.
The diffraction spikes on point sources are real and are an artifact of the support structures and mirror configuration of the telescope. If you look at the telescope you'll see all the mirrors are hexagonal, which corresponds to the six spikes on every point source of light.
The diffraction spikes on point sources are real and are an artifact of the support structures and mirror configuration of the telescope. If you look at the telescope you'll see all the mirrors are hexagonal, which corresponds to the six spikes on every point source of light.