Halo: Starside Intercept is a Homeworld 2 total conversion bringing tactical space combat to the Halo universe.
The Dreadnought's main cannon is a weapon of unspeakable power. From what little we know, it derives its massive draw from some type of phased pulse generator similar to the ones on Installation 04. If this is indeed the case, we have little hope of defending ourselves from such a weapon, however we know the amplification mechanism is susceptible to EMP bursts at close range, such as the ones generated by nuclear blasts, or Covenant plasma weaponry on overcharge.
This may prove vital information.