Which objects in the image are part of the Perseus cluster?
I know the small stars are in our galaxy.
I'm not sure about the circular shapes with the lens flare (or whatever that is) on them. Are they also stars in our galaxy that are close or that are aligned in such a way to make the "lens flare" or whatever? As an example, I'm talking about the bright blue flared object in the upper left.
Anyway, then there are the smudgy things. I can tell these are obviously galaxies, but which ones are part of the Perseus cluster? There are fuzzy/blobby galaxies, and more distinct spiral ones. Some seem "close" but some appear distant as if they probably arent in the cluster. For example there are a couple on the top of the image, one 40% from left and one about 35% rrom right, that look quite distant or unrelated to the other shapes.
This is one of those apod images I wish had been done with a mouse-over. If an astronomer could have circled the galaxies that ARE in the cluster with a red line, and circled the non-perseus ones with a blue line, and then digitally removed all the stars from our galaxy, such that a mouse-over would show you ... that would have ruled.
Lewis