Algalon and its Heroic mode equivalent Heroic: Algalon concludes the Algalon the Observer attunement quest chain, rewarding the [Celestial Planetarium Key]. Doren will offer this quest once all four sigils have been turned in to him. The followup quest is the reward for key-bearers who defeat Algalon.


Bring the Sigils of the Watchers to the Archivum Console in Ulduar.


You really did it, <name>. Take the sigils to the Archivum Console and see if you can gain access to the Celestial Planetarium.

You best hurry, <lad/lass>. Time is of the essence.


You will receive:
Inv misc key 15
[Celestial Planetarium Key]
Inv misc bag 25 mooncloth
[Sack of Ulduar Spoils]


Stand by for verification.

Access to the Celestial Planetarium granted. Please retrieve your key.


Quest progression

  1. Neutral 15 [80R] Archivum Data Disc
  2. Neutral 15 [80R] The Celestial Planetarium
  3. Complete all of the following:
  4. Neutral 15 [80R] Algalon
  5. Neutral 15 [80R] All Is Well That Ends Well

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