Gran Turismo 71 APO Refractor with Flattener

The William Optics Gran Turismo 71 APO Refractor is a compact triplet apochromatic refractor featuring high-quality FPL-53 extra-low dispersion glass that delivers exceptional color correction and chromatic aberration elimination. With its f/5.9 focal ratio and 71mm aperture, it excels at both wide-field deep-sky astrophotography and visual observation, offering excellent contrast and sharpness across the full field of view. This bundle includes the Flat6AIII field flattener/reducer that doubles as a 0.8x reducer, providing a flatter field for full-frame imaging while improving light-gathering speed. Built with precision CNC-machined aluminum construction and a dual-speed Rack & Pinion 2.5-inch focuser, this refractor is equally suited for traveling astronomers and serious astrophotographers seeking a portable, high-performance imaging platform.