Image Artifact

In most sciences, artifacts are things to be avoided.  Unless you’re an archaeologist, you do *not* want artifacts in your data.  Case in point: I was playing around with the Microsoft WorldWide Telescope  when I ran across this image, sitting out between Sirius and Orion.  If you look closely, you can see that it is an image of a brightening sky and multiple super-imposed images of the instrument package of a large telescope.   I don’t know which one, but with all the clutter there, I’m thinking it has to be a fairly big one.