The first picture, the one that looks like the lagoon nebula, fits this description exactly. "it appears as a distinct oval cloudlike patch with a definite core." - Wikipedia. The picture I got is it turned on it's side. The third one that looks like the veil nebula or Cygnus loop, is the one that I can sort of get, but I never said that they looked EXACTLY like them though. And for the lemon slice nebula looking one,
I can see it being ngc 6826, but i'm pretty sure that ngc 6826 is supposed to be green, not blue, but I may be wrong about that. Also, you have to take different angles into account BD, the images could've been showing them ether turned up right, turned to the side, or laying on it's side, etc. But whatever, you can think what you want, but I personally think that these look somewhat close to those three nebulae.
Also, I think we're getting off topic...