Quest Requirements:
Skill/Other Requirements:
10 Crafting
Be able to kill a level 42 guard
Items Needed at Quest Start:
Bronze bar, Molten glass, and 3 Planks.
Items Needed to Complete Quest:
Items Recommended for Quest:
Normal or Super Antipoison potion (4).
Items Acquired During Quest:
Goblin kitchen key, Lens mould, Lens
Quest Points:
2250 Crafting XP, a Jug of wine, a random reward depending on what constellation you see and an Astrology book.
Start Point:
Observatory reception, southwest of Ardougne (East), west across the river from the Tree Gnome Village.
To Start:
Speak to the Observatory Professor.

  1. Head to the building north of the observatory, north of Castle Wars, and talk to the Observatory Professor. He will explain to you that the pesky goblins next door have broken his telescope and he needs parts to fix it. He suggests talking to his assistant. However if you already have the items with you, you do not have to talk to the Observatory assistant. Talk to the professor again and give him the Bronze bar, Molten glass, and 3 wooden Planks. After giving him all the items, he will tell that he needs a Lens mould to craft the glass.

    Note: The easiest way to reach the Observatory is by using a Ring of duelling to teleport to Castle Wars and walking north from there.

    Step 1

  2. Leave the house and head to the ruins, east of the Professor's house. Climb down the stairs, in the western house, into the Observatory Dungeon.

    Step 2

  3. Scattered throughout the dungeon, you will find a number of chests (See map above). One of the chests holds the Goblin kitchen key. Open and search that chest to find the key. If you open the wrong chest, a Poison spider will appear and poison you.

    Note: The key is commonly found in the second chest south east of the stairs, although it can differ from player to player.

    Step 3

  4. Return to the area with the stairs leading to the ruins. From their, head west until you find an area with a closed guard and a sleeping guard. Prod the guard to wake him up and he will attack you. Open the gate and go in quickly. Inspect the goblin stove to discover the Lens mould.

    Note: When you prod the level 1 sleeping guard, he will turn into a level 42 Goblin guard

    Step 4

  5. Go back to the observatory house and talk to the professor. He will give you an excuse that he cannot make the Lens himself because his crafting level is not high enough. Now, use the Lens mould with the Molten glass and you will produce a Lens. Talk to the professor again and he will ask you to meet him at the observatory.

    Step 5

  6. Descend down into the dungeon again and make your way to the other set of stairs further in the dungeon (See map above). Climb up those stairs and you will be in the Observatory. Talk to the Observatory Professor and a cut scene will occur in which he fixes the telescope.

  7. Go up the stairs to the second floor of the observatory and talk to the professor again. He will tell you to look trough the telescope and identify the constellation. Look through the telescope and tell the professor what constellation you saw.

    Note: If you your answer is wrong, he will tell you to go downstairs and look at the charts on the walls. The charts have a list of constellations, clicking on the name will show you the star pattern.

    Step 7

    Congratulations! Quest complete!

    Quest Complete Scroll

When you have finished speaking to the professor, go back down the stairs and through the dungeon. When you find your way out, you can get a free Jug of wine from the assistant by speaking with him, and visit the Zamorak worship site to the northeast and as a special bonus to those who have completed the quest, you can get an Unholy mould from the Spirit of Scorpious.

Note: When you do the Observatory Quest and you are observing the stars, tell the Professor you are not sure what your looking at, he'll say the constellation. If you use the telescope right there, you will not get the reward and might be able to do another one, continue until you find the constellation you want then talk to to professor.

Here are the possible rewards:

  • Aries: 875 Attack experience.
  • Capricorn: 875 Strength experience.
  • Virgo: 875 Defence experience and an Uncut sapphire.
  • Cancer: Amulet of defence.
  • Taurus: Super strength potion.
  • Leo: 875 Hitpoints experience.
  • Sagittarius: Maple longbow.
  • Pisces: 3 Cooked Tunas and an Uncut sapphire.
  • Gemini: Black 2h sword and an Uncut sapphire.
  • Scorpio: Weapon poison and Uncut Sapphire.
  • Aquarius: 25 Water runes and an Uncut Sapphire.
  • Libra: 3 Law runes and an Uncut Sapphire.
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This Old School Quest Guide was written by Gnat88, mooninite2 and pj. Thanks to Shinraz, DRAVAN, Clamball, SoliderofAdamant, Ghoulies, Nickseemann, Ju Juitsu, Chaosblade77, airbusa300, Raggs, crushedhalo, thegr8brian, Maonzhi, figrsk8r, McSwindler, Jarkur, and Royal Pixelz for corrections.
This Old School Quest Guide was entered into the database on Tue, Mar 02, 2004, at 09:14:37 PM by Wiz-Master and CJH, and it was last updated on Sun, Mar 08, 2015, at 03:06:47 AM by 2003 Veteran.

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