Constellation Blast against a single target

[Santobon]

Ok, so if a Solarian used Constellation Blast a single enemy, let's say they are at least size Huge.

And positioned the 10 radius bursts to be touching the enemy, yet not intersecting. (I did test this and it is possible).

Would they have to roll a Reflex save against each burst to save against the 5d6 damage 3 times?

Or just have them roll 1 save to save against 5d6 damage only once?

[Darg727]

Single reflex save for the entire ability, but they can take damage from more than one burst.