If you can pass the two packs of three Imperials guarding the hallways of the High Corridor (I was able to stealth past them on a level 17 Jedi Shadow), then you can solo this quest without a companion. Here's how:
Pass the trash NPC's, loot the astrogation charts. The Sith Infiltrator will spawn. Take him next to one of the two pillars in the room, and fight him there. Once he starts casting his Death Field, which has a three second cast time, move behind the pillar out of his line of sight. Once the template on the ground for the field disappears, the cast has failed, and you can go back to attacking the champion. He won't hit you back at this point, as he is waiting to cast the field again.
Repeat this until the champion is dead, then loot the Astrogation Computer from his corpse, and you've just soloed the quest.
The Sith Infiltrator boss that drops the mission objective can ALSO drop Orange-quality (mod'able) L15 bracers. If you wish to farm the bracers (high level toon recommended) you can reset this mission repeatedly. Just run outside the entrance and click "reset". Don't panic if it is greyed out ... you can only reset once every 2 minutes and a L50 will not have any problem getting in and killing this boss in under 2 minutes.
Some people will get lucky and see a bracer on their first, third or 6th drop ... and post happy comments here. I'll let you know it took me 29 kills to get any bracers (and I was farming Consular bracers, not the Trooper bracers I got ... money isn't the issue so much as none of the kind I need are available). Since you can kill it around 30 times an hour, this isn't sooooo bad. Then again, it is quite possible the one you need may NEVER drop for you.