To be honest, this just feels like the Euthyphro Dilemma all over again. "Good" is defined by what God does. God chooses to run the laws of physics. Laws of physics are "Good". Who gives a damn?
Also this is directly contradictory to Christianity, since the core beliefs of Christianity all assume some level of non-natural intervention in the world (e.g. resurrection of Christ). Same for almost all other religions. So who is this even for?
Lens and CCD technology is not trivial at those speeds and insane angular resolution.
But we can easily capture a picture of a fighter jet when it's close. And the further it is the higher the angular resolution required, but also the lower the angular speed, so do those cancel out to make it not much harder, or it doesn't work like that?
Note you don't even need high resolution in all directions, just high enough to see whether it's worth zooming in/switching to a better camera.
Why would you need large telescopes?
Naked eye has angular resolution of 30m at 100km, you need something slightly better. A small lense should do it. Cameras + zoom lens are well understood mass produced components. And this is a highly parallelizable task.
But then no need for stealth at all?
I wasn't referring to the A10, but the use of e.g. f-35s in ground support roles - as heavily practised by the IDF for example.
Let's rephrase: if this was a major issue for the f-35, the USA wouldn't have invested trillions of dollars in stealth without addressing optical camouflaging. All f-35s would have camouflage paint. They'd be a lot of research into how to reduce visibility of aircraft, just like there is for reducing RCS. Given they don't do this, clearly they don't think optical detection is a major concern.
Aircraft already often fly low, which also works well against radar, but makes them vulnerable to cheaper and more numerous MANPADS. Flying high shouldn't work particularly well given the setup I've described here, since we have a range of about 100km, an order of magnitude higher than the f35 can fly.
Night is an obvious point! Should have thought of that!
Still this is relevant when the stealth aircraft is providing tactical support, rather than bombing operations, when you can't necessarily pick the time to provide aerial support. But tactical support is usually from behind the front lines, rather than over enemy territory, where anti aircraft weapons are less effective anyway.
But I discussed that in the post. All you need are enough cameras + processing power. Both are cheap.