Post
by Rob » Fri Jan 19, 2018 7:33 am
Sorry to burst anyone's nebula but those colors you see in photos are not the color one sees with the need eye; per the web:
Per the all knowing web:
"Almost every object which lies beyond the boundaries of our Solar System -- whether a group of stars, a galaxy, or a cloud of gas and dust -- is so faint that even if you were up close to the object it would be only a faint grayish or grayish-green blob. As a result, if an image of such an object looks 'nice', you can count on it that it has been altered from the real view to give it, as in the case of planetary photographs, far greater color, brightness and contrast. Unless noted as being in 'true' color, the colors which are shown are almost never the real ones (as an example, visit Behind The Picture on the HST site). Obviously, ultraviolet and infrared wavelengths, which are not visible as any kind of light or color, are assigned arbitrary colors, and it is not unusual for even visible-light colors to be altered where it produces a more pleasing result. A dozen different photographs of the same object may therefore present a dozen completely different appearances, and not a single one of them is likely to be a 'true' view (even 'true-color' views almost always being made far brighter than in real life, as for planets)."