AR! AR! AR! MORE POWER!!! hehe, anyway, Your probably right on the omega class weapons, but i think they are scalled down just a little smaller than that. The nova class drednaught is listed on Babylon five Technical Manual as 1,455.6 meters. I think that is accurate because of the main cannons on the warlock. But also the omega is listed as 1,717.3 meters long. The main and secondary weapons are smaller than the nova's considerably but also pack a bigger punch. I have a couple of pics i can e-mail to you to show the difference in size. I currently think that having fusion cannons, except for the main gun on the front of the ship is wishfull thinking. If they are some sort of major weapon, they are probably the medium energy weapons from the omega. But i do think they look just a bit scalled down from the omega's. the webpage for the Babylon 5 technical manual is : http://www.tecr.com/b5tech/
I like this sight, although, it does have some major cob webs. e-mail me if you want the side profiles of the omega and the nova.