William Optics ULTRA-CAT 56 mm APO Refractor Imaging Telescope

The William Optics UltraCat 56 is an ultra-wide-field apochromatic refractor designed for astrophotography, featuring a 56 mm aperture and fast f/4.8 focal ratio.

• The UltraCat 56 is built to capture expansive nebulae, star fields, and Milky Way structures with exceptional sharpness, contrast, and colour correction.
• It features an advanced 5-element Petzval optical design with high-grade glass elements to deliver a naturally flat field with pinpoint stars.
• The telescope uses William Optics’ patented WIFD system to maintain a rigid and stable optical path during focusing.