The Celestial Planetarium Access can be found in the Antechamber of Ulduar. The console unlocks the doorway that leads to the Algalon the Observer in the Celestial Planetarium.
This console requires 
[Celestial Planetarium Key] (or [Heroic Celestial Planetarium Key]) to unlock.
Patch changes[]
Patch 3.1.0 (2009-04-14): Added.
