However the heavy blasters can still do considerable damage, so when you take them out, make sure that you do so from behind. What you are looking at is a turbolaser turret. They are ground based, and have little armor. Four shots should do it. However be carefull to watch whcih which way the guns swing as these babies pack a serious punch.
Missile turrets are the pilots nightmare.
These nasty pieces of work will fire two missiles in each shot. Your computer will tell you if you are being targeted by a double high pitched bleep. Much more of a problem is this. The heavy turret. It packs more of a punch than a normal turbolaser turret, and its strong armor means that multiple passes have to be made to take it out.