This is one of the most elegantly designed Orbital Turrets that I've ever seen. The exterior and the interior are beautiful. Lots of great detail. However i ran some tests.
Your logic activated main cannon is has a very limited range. The AI will always fight at the max range of the weapons its equipped with. add that to the fact that the range of weapons scales with sector size and most targets will be completely out of the guns range. also for the life of me i just couldn't get the main gun to work. i believe that the AI does not track targets unless a weapon is equipped.
Some things to improve.
Consider ditching the logic on the main gun. It could still work as a close range back up but ultimately you're gonna have to rely on the AI.
Add more weapons/guns. Banking on Accuracy will have to wait till the AI gets improved. Till that time putting more guns and more arrays will increase the chances that the AI will hit something. Friendly Fire unfortunately can't be avoided ATM so its something we all have to deal with. The best weapon for the AI is the Lock on missiles (Missile+Damage Beam/ Missile+ Damage Pulse). Unlike the player the AI doesn't need a line of sight in order to fire a homing missile.
Add Logic clock activated Defensive Push/Pull as a way to move the station while keeping the AI from trying to pursue its targets. The AI cant use defensive Effects and the Push effect will thrust your ship forward while the Pull thrusts you backwards. by connecting a logic clock to them players will be able to fly the station into position and not have to worry about the AI flying the station away.
All in all i see a lot of potential. Just be sure to do a lot of testing to be sure that your systems work perfectly.