Thank you very much. I have just ordered that book on myb favourite used book website.

Note that it is possible for retinas to be able to see different levels of dim light. I have no proof of that so I am just guessing. I have an extremely rare retina disease, and it is very difficult for me to see things at night. And now during the daylight as the disease progresses.

If it’s the Webb telescope making the images, then it’s only in the far infrared.