At that point, you might as well take an HDMI out connected to a larger screen to make it even more visible to those that wander by. I've seen a group do this with a camera designed for purpose that has software running stacking so that the longer the image is being viewed the better the image. They then project this for a larger visible image. Sounds weird as projector == bright light which is frowned up, but they always setup in a way that is not disturbing and since the image projected is pretty dark it's not as bad as one might think. They do everything they can to never blast white.

As far as wowing people, it's pretty impressive. Once they go to the next celestial object, you can watch as the image stacking starts working as you see the fainter object continue to become more and more distinct.