Description Explore the universe with the William Optics ZenithStar 81 WIFD, a premium refractor telescope that offers unparalleled optical precision with its innovative Internal Focus Design (WIFD). Perfect for astrophotography and visual observations, it features a patented internal focusing mechanism that keeps optics perfectly aligned, even with heavy cameras. Available in vibrant red or elegant gold, the ZenithStar 81 WIFD boasts a compact and durable build. Enhance your viewing with optional accessories like the Flat6aIII, a 0.8x reducer for broader celestial views, and the 50mm Uniguider for improved tracking accuracy during long exposures. With its refined internal focuser, this telescope provides smooth, precise adjustments for consistently sharp images. Whether capturing distant galaxies or observing planetary details, the ZenithStar 81 WIFD is an excellent choice for serious astronomers. Specifications: Focal Length: 559mm Diameter: 81mm Aperture: f/6.9 Focuser: WIFD (WO Internal Focus Design, compatible with EAF) Image Circle: >Full Frame Retracted Length: 526mm Extended Length: 607mm Dew Shield Circumference: 382mm Dew Shield Diameter: Φ121mm Weight: 7.82lbs / 3.545kg (OTA only), 10.05lbs / 4.560kg (OTA with ring, dovetail and saddle)
