A mahogany telescope can be built in the telescope hotspot of the Study in a player-owned house. It requires 84 Construction, 2 mahogany planks, and 1 piece of molten glass to build. When built, it earns the player 281 experience.

As with all telescopes, it can be used for stargazing and tracking Shooting Stars. It can predict the star's landing time within an error margin of 2 minutes. This is also the highest level telescope that can be built in a player's study.