It's been a while since I played so forgive me if this has been answered already (I didn't see any other posts to this effect). How does the Necrons' Star Pulse Generator work vs ordnance? It says you get one roll to hit vs every non-Necron ship/piece of ordnance in range, however, I don't see where it's explained how to resolve this special attack. Is it a weapons battery-style attack and if so, what modifiers are used (closing, abeam, etc. for determining which armour value to use)? Or is it treated like a turret attack where it simply hits on a 4+? Or something else? I cannot seem to find anything explaining it in the rules.
Thanks in advance.
Cheers, Gary