Sky-Watcher 102/500 AZ-Go2 Explorer Refractor Telescope (Wi-Fi)

The Sky-Watcher 102/500 AZ-Go2 Explorer Refractor is a powerful 102mm achromatic telescope featuring a short 500mm focal length. This compact design results in a noticeably shorter tube than other telescopes in its class, allowing it to deliver a stunningly wide field of view with standard eyepieces. Because refractors do not use mirrors, they provide a classic, generally sharper image quality without the obstruction of a secondary mirror shadow. This makes the telescope highly versatile—not only is it excellent for deep-sky observation, but when used with the included 45° erecting image diagonal, it is also perfectly suited for high-quality terrestrial viewing.

The system is powered by the AZ-Go2 Mount, a lightweight and fully computerized unit that weighs only 1.3kg and utilizes smooth DC motors. You can control the telescope wirelessly using your smartphone or tablet via the SynScan App for iOS and Android, making alignment and tracking completely effortless. With its Wi-Fi Go-To capabilities, there is no need to manually push the telescope to find targets; simply select a celestial object from the app and the mount will automatically slew to it. The compressed length of the tube further ensures that the entire setup is convenient to pack and store, making it the ultimate portable solution for any stargazing adventure.

Product Features in Detail

Rich-Field Observation

The f/4.9 focal ratio makes this telescope a "fast" optical system. It is specifically designed to excel at wide-field observation, allowing you to view entire star clusters, large nebulae, and the Andromeda Galaxy in a single frame—views that are often impossible with longer telescopes.

Smartphone-Driven Exploration

By utilizing the built-in Wi-Fi, you transform your mobile device into a high-tech star map. The SynScan app guides the telescope to over 42,000 objects, providing an educational and interactive way to explore the night sky without needing prior astronomical knowledge.

Superior Image Sharpness

As a refractor, this telescope features an unobstructed light path. Without a secondary mirror in the middle of the tube, the 102/500 produces higher contrast and sharper definition on objects like the Moon and bright star fields compared to many reflecting telescopes.

Dual-Purpose Functionality

Unlike many astronomical telescopes that show images upside down, the included 45° erecting diagonal corrects the view. This allows you to use the telescope during the day for birdwatching, coastal viewing, or observing distant landscapes with incredible clarity.

Lightweight Grab-and-Go Design

The compact nature of the 500mm tube, paired with the 1.3kg AZ-Go2 mount, makes this one of the most portable 4-inch telescopes on the market. It can be easily moved to your backyard or packed in a vehicle for camping trips.

Simple "Bright Object" Alignment

Setting up is a breeze thanks to the computerized mount's software. By simply pointing at a few bright stars or even the Moon, the system creates a digital map of the sky, ensuring that every object you select thereafter is centered perfectly in your eyepiece.