The William Optics Mighty Cat 71 – 30 Years Anniversary Limited Edition is a revolutionary 71mm apochromatic astrograph designed to push the boundaries of ultra-fast deep-sky astrophotography. Created to commemorate three decades of optical excellence, this exclusive release is limited to just 100 units and features the unique "Cosmic Visitor" theme, showcasing detailed extraterrestrial-inspired artwork that celebrates 30 years of exploring the cosmos and uncovering its mysteries. It debuts an extraordinary f/3.2 focal ratio, the fastest telescope ever produced by William Optics—while delivering a generous 43.2mm image circle and incorporating the patented WIFD (Internal Focusing Design) system.

Its exceptionally fast f/3.2 optical design significantly shortens exposure times, allowing astrophotographers to capture faint nebulae, intricate dust lanes, and wide celestial landscapes with remarkable efficiency. Combined with a flat-field 7-element optical system, precision internal focusing, and a distinctive design inspired by otherworldly technology, the Mighty Cat 71 Anniversary Edition is purpose-built for high-performance deep-sky imaging with both full-frame and APS-C camera systems.

Captures deep-sky objects with remarkable efficiency, leveraging the fastest optical system in William Optics history to maximize photon collection and reduce exposure times.

The integrated optical design provides a naturally flat image field, removing the need for an external field flattener while maintaining sharp stellar profiles and consistent detail across a large sensor.

Optimized for full-frame, APS-C, and Micro Four Thirds sensors, ensuring broad compatibility for wide-field astrophotography and detailed deep-sky imaging.

A patented internal focusing system keeps the optics perfectly balanced by housing the focusing mechanism inside the telescope, helping prevent drawtube flexure and maintain full-field illumination.

Features a heavy-duty rear tilt and rotation mechanism engineered to support modern imaging configurations, minimizing rear-end sag while preserving easy and precise sensor-squaring adjustment.

Designed to maintain stable optical alignment across temperature changes by minimizing the effects of thermal expansion and contraction around the lens cell.

Features a front cap with an integrated focusing aid, allowing fast and accurate star focusing in the field.

Designed to improve handling, portability, and accessory mounting without compromising the clean mechanical layout of the Mighty Cat platform.