Difficulty level: Easy
Start location: Go west of Yanille to the Observatory area (north of Castle Wars), and talk with the professor in the house North of the Observatory.
Required:
Skills: Level 10 crafting and the ability to kill a level 42 goblin guard.
Items: 3 wooden planks (Barbarian Outpost/wild/Entrana), bronze bar, molten glass (check our Crafting guide if you don't know where to get this), antipoison is also recommended. For the planks, you can get to the Barbarian Outpost rather quickly if you have a Games Necklace. The necklace will allow you to teleport there.
1: Professor: Tell him that you'd like to look in the telescope. He will tell you that he needs some parts replaced. He'll need wood, bronze and glass. Talk with the professor again and give him your 3 wooden planks. Talk with him again to give him the bronze bar, and again to give him the molten glass.
2: Lens mould: After giving the professor the molten glass, he'll ask you for a lens mould. Go down the ladder in the house and try to locate a cage.
You'll have to search the south-eastern most chest in the cave to find a key for it. Once you have found the key, go back and go into the cage. Search the sacks until you find a lens mould.
3: Professor: Go back to the professor with the lens mould. He'll want you to make the lens. Use the molten glass on the mould, and return the lens to him. Now go down into the dungeon again, but this time look for the ladder up to the Observatory. Go up and talk with the professor a couple of times, and look through the telescope.
Reward:
2250 Crafting experience
Randomly:
875 Attack, Defence, Hitpoints or Strength experience
Random item from:
Maple Longbow
Weapon poison
Three law runes
Amulet of protection
Black 2-handed sword
Super Strength Potion
25 Water runes
Three cooked tunas
An uncut sapphire
Also you can visit the Spirit of Scorpius in the graveyard north of the Observatory and little goblin village. He will give you an Unholy mould used for making Unholy symbols from Silver (see Crafting guide). He will also enchant strung unholy symbols for you. If you talk with the assistant you'll get a jug of wine as well.
Quest points gained on completion: 2
Written By/Credits: Ks Jeppe
Guide originally from
http://www.tip.it/runescape