[Suicide Junkie]

For one, try to put the basestar there between you and the attackstars.

Then you won't be hit by their guns, and your survival time will be greatly extended.

Also try getting in close and then dumping your fighters out at it. Then the fighters should all get at least one clear suckerpunch in on the basestar. (They'll be protected by your shields on the way in, and the huge volume of fire into one facing should cripple the basestar.)

It would also be a good idea to draw off their fighter screens with a feint. Get the fighters to chase you, and take them on in small Groups.