Here, have an installation. Perfect 9-point radial symmetry made UVing this super ez (lol, I'm a lazy fag).
Designed to be a theater-shield generator system, the installation has massive bubble shield 10 kilometers in radius, 4000, yes 4000! faces. It is lightly defended, with only a pair of turrets, one each on its upper and lower surfaces.
It is recommended that you give it the "knossos" flag or it will take 20 years to explode. Its explosion are huge, unfortunately, due to the shield mesh (and thus bounding box) being so ungodly big.
Feel free to rip off the shield mesh and use it as a comm node or something, if that's what you want. You could probably get it to have a more sane bounding box radius too then.
Oh, right. Don't try this in retail.