
Ultra-Cat 108 WIFD
Coming Soon - End of Q1 2025 OVERVIEW The William Optics UltraCat108 is a cutting-edge 108mm apochromatic refractor designed for astrophotographers who demand top-tier performance. Featuring a 5-element advanced Petzval optical design and a fast f/4.8 focal ratio, it delivers breathtaking edge-to-edge clarity and vivid detail, making it perfect for capturing expansive celestial views. Its robust build, exceptional optics, and innovative features redefine the standard for astrophotography. Key Features: Advanced 5-Element Petzval DesignEliminates field curvature, providing sharp, flat-field images without requiring additional flatteners. 60mm Superior Image CircleFully supports full-frame and medium-format cameras for wide-field and detailed astrophotography, outperforming standard 106mm telescopes. F/4.8 Fast OpticsOffers exceptional light-gathering capability for vibrant deep-sky photography. WIFD (William’s Internal Focuser Design)Patented internal focuser ensures precise, stabl