Greater Stealth Aura

The material below is Open Game Content from a 3PP Source

Stealth Aura, Greater
Illusion [Starship]
Level: Mage 5; Components: S; Casting Time: Attack action; Range: Starship Tactical (1,000 ft. + 500 ft./level); Target: One starship; Duration: Concentration, up to 1 round/level;
Saving Throw: Will negates (harmless) (object); Spell Resistance: Yes (harmless) (object)

This spell functions like stealth aura, except that it affects any size of starship.