This article is about the quest item. For the item used to make lanterns, see Lantern lens.
Observatory lens
Observatory lens
Release date 17 March 2003 (Update)
Members only? Yes
Quest item? Observatory Quest
Tradeable? No
Equipable? No
Stackable? No
High Alch 1 coin
Low Alch 1 coin
Destroy You'll have to get another mould and piece of molten glass.
Store price Not sold
Weight 0 kg
A perfectly circular disc of glass.
Observatory lens detail

The observatory lens is a quest item made and used during the Observatory Quest. During the quest, a lens mould and a piece of molten glass must be given to the professor in the Observatory. The professor will then attempt to craft the lens but be unable to do so. He will then return the mould and glass to the player and request it be crafted. Once made, the lens should be given to the professor so that the telescope can be repaired.

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