@yel@Start:@whi@Talk to the Observatory Professor in the Observatory Reception Room west of Tree Gnome Village.
@yel@Difficulty:@whi@Easy
@yel@Length:@whi@ Short
@yel@Requirements: @whi@Level 10 Crafting, ability to defend against level-48 Goblin guard.
@yel@Items needed:@whi@ Bronze bar, molten glass, 3 planks. A Cure poison Potion is also recommended.

@cya@Walkthrough:@whi@
Talk to the @yel@Observatory Professor@whi@ and ask to look through his telescope. He tells you that the Goblin residents have been causing trouble and tampered with it. He asks you to collect 3 different items. Hand in all 3 items, and he will return the molten glass while asking you to find the lens mould.

@cya@Lens mould:@whi@
Go down the ladder in the Observatory post, into dungeon. Go through the maze to the far south west corner and you find a chest containing a @lre@keep key@whi@. Go to the room where a level-48 Goblin guard is, the room is located east from the entrance to the dungeon, kill him and use key on the @cya@gate@whi@. Search the @cya@sacks@whi@ to find lens mould.

Go back to the Observatory post and give the lens mould to the @yel@Professor@whi@. Agree to help him make the lens. Use @lre@molten glass@lre@ on the @lre@lens mould@whi@ and then talk to the @yel@Professor@whi@ and he will tell you to meet him in the Observatory.

Go back down to the @cya@dungeon@whi@, and through the maze, and find another @cya@ladder@whi@ north of the chest containing the key to the gate. It leads to the Observatory. Talk to @yel@Professor and look through the telescope to complete the quest.

@cya@Optional: Unholy symbol mould@whi@
Look into the telescope again and you will see a strange symbol. Speak to the @yel@Spirit of Scorpius@whi@, at the graveyard to the north. He will give you an @lre@Unholy Symbol mould@whi@, which you can use to make @lre@Unholy Symbols of Zamorak@whi@. If asked, he will also bless these symbols.

@gre@Rewards:
@whi@2 Quest Points
Crafting experience =  (Level x 100 + 250) x Current Rate