Sky Watcher Skymax 150 Telescope. Despite their small dimensions they pack a powerful punch. Their high-resolution diffraction-limited optical systems are multi-coated to maximize contrast and image sharpness. Specifications for Sky Watcher Skymax 150 Telescope: Manufacturer: Sky Watcher Color: Black Objective Lens Diameter: 150 mm Condition: New Package Contents: Sky Watcher Skymax 150 Telescope Sky Watcher Skymax 150 Telescope