Delphi, if what you say is true, then I think an explaination on this is in order. If I'm not misstaken, that is an ISD mkII (as seen in ESB and RotJ) and the guns that are selected are the turrets on the left side of the superstructure, and if so, then all of those guns are supposed to be Heavy Turbolaser batteries, not Ion Cannon batteries. Ways that makes me believe it is an ISD mkII are the turret batteries in question appear to have 8 barrels on each battery (4 barrels on each turret, think WWII battleships for visual reference, so 4 barrels per turret, 2 turrets per battery which again acts as a turret, and 4 batteries per side of the superstructure, totalling to 64 guns/barrels)), and the horizontal array between the domes rather than the upright on the ISD mkI seen in ANH, and no brim trench heavy gun batteries which the mkI has. And even if it is an ISD mkI, then only the rear most turret is a Heavy Ion Cannon. The mkI has 3 dual barreled Heavy Turbolaser turrets per side of the superstructure, and 1 dual barreled Heavy Ion Cannons at the rear, totalling to 12 HTL guns and 4 HIC guns. They are of a heavier caliber than on the ISD mkII though. I'll try finding pictures of the turrets.