ok, so the point being made, since it apparently still eludes you,
is that the hubble’s ‘retinas’ consist only of ‘rods’, sensitive to the combined intensity of a broad spectrum of frequencies, specific colour information is not discernable, which is where filters come in.
(, Mon 30 Jul 2018, 21:53, Reply)
So what?
Colour is light of different wavelengths. Hubble can detect different wavelengths. It processes that information. It can see colours.
(, Mon 30 Jul 2018, 22:53, Reply)
so you’re coming across as a belligerent dunce
by debating an important, albeit academic point about the way colour information is (post-) processed
here's a succinct cnet article to help you out
(, Mon 30 Jul 2018, 23:16, Reply)