A question thats been on my mind for a while...

[omegaLancer]

unlike other Sci fi universe, Missiles are not used as long range weapon ( does not include the missiles from galaxy gun).

Ther are several reason, first is ECM. Jammer are so powerful in SW, missiles cannot not obtain a lock on unless they are within several kilometers of a target..It also common for fighters to fire their missiles dumb ( without missile tracking unit engage).. using visual sighting and the pilot own skills to score a hit..

The second is SW energy weapons.. given enought time ( mere nanoseconds) targeting computers can track and obtain a firing solution that allow lasers and Turbolasers to shoot down a missiles.. One way around this was to make the missile proof against such weapons.. The Missiles of the galaxy guns had shields strong enought to survive turbo laser strikes, and the Boron Diamond anti fighter missiles could surive barrages of fighter wattage laser units ( but seldom used due to hi cost)

The other fact is that turbo laser have a range in the light minutes making them a match for long range missiles.

Star Destroyer have missile batteries ( proton torpedoes) since the Star destroyer Chimera used torpedoes against squadron of pirate vessels..
and old Mandel's drawing show 6 such missiles tubes..

General missile are used by small ship that cannot mount turbo laser, to give them a little extra punch, but this requires the attacking ship to get fairily close and endure the attack of a anyship arm with turbolasers..