I am new to astrophotography and am just starting to learn some things about it and it's been fun. I don't really have a specific question here, just an observation to share about something I saw recently. I have been watching some YouTube videos concerning the image processing procedures. I was rather amazed when I saw a video today which showed a single image being "stretched" by post-processing software. The original, raw image showed only a few stars against a black background -- and it was pretty boring. Then... the operator performed the stretching and, incredibly, the background filled in with a huge amount of fine details! I suppose it would be called gas and dust. This was really amazing to see something evolve out of nothing, because the original image was nothing great to look at. And the image was captured using (I think) a simple DSLR with a basic 50mm lens, there was not a lot of magnification with a big scope on a specific target, like a nebula. This fine background detail was visible throughout the entire frame, as I recall. I just thought that was quite remarkable because I expected to see a few more discrete stars visible in the photo after processing -- but the detail that emerged was really amazing! I never would have guessed that there was this hidden content in the raw photo. It makes me wonder what any image captured by randomly pointing a camera up at the sky might reveal, because apparently you can't see any detail with the naked eye and you have no idea what's really there without a lot of exposure time. It also makes me think that I'd probably be disappointed with basic astronomy real-time viewing thru a telescope if it can't pick up the hidden details that are revealed by astrophotography. Anybody else have this experience?