most telescopic work is done in radio frequencies also.
another reason is that its not necessary to show things like this when you know they are there.
if NASA really were concerned about trying to keep up a lie of being on the moon, then you'd think that they'd be posting pics of the flag and so on...
but they dont. if it was a conspiracy, then you'd think that they'd really be providing this.
so why dont they do it?
the answer is : they know its there, they put it there, they have video and all the proof already... if u still dont believe it, they arent going to spend a cent on trying to convince you, because you really arent anybody.
theyve got better things to spend their dollars on.